* [Qemu-devel] [Bug 939027] [NEW] Combining direct_io and non-direct_io leads to hang
@ 2012-02-22 21:49 Avleen Vig
2012-02-23 9:12 ` Stefan Hajnoczi
` (4 more replies)
0 siblings, 5 replies; 8+ messages in thread
From: Avleen Vig @ 2012-02-22 21:49 UTC (permalink / raw)
To: qemu-devel
Public bug reported:
Version 0.12.2 - I know this isn't the latest but I looked through the
changelogs and couldn't find any references to this being fixed.
This is related to issues that many apps have, and is described in more detail here:
http://oss.sgi.com/archives/xfs/2010-07/msg00163.html
and:
https://bugs.launchpad.net/percona-xtrabackup/+bug/606981
When using both direct io and buffered io on the same file, you can cause corruption on the filesystem and other issues.
XFS out right hangs, but the problem exists on ext3 and other filesystems which silently carry on.
**this is a data corruption issue**.
This is the full stack trace we got from a recent hang:
Feb 22 19:55:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:55:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:55:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:55:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:55:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:55:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:55:14 virt11 kernel: Call Trace:
Feb 22 19:55:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:55:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:55:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:55:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:55:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:55:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:57:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:57:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:57:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:57:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:57:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:57:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:57:14 virt11 kernel: Call Trace:
Feb 22 19:57:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:57:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:57:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:57:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:57:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:57:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:59:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:59:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:59:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:59:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:59:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:59:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:59:14 virt11 kernel: Call Trace:
Feb 22 19:59:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:59:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:59:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:59:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:59:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:59:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:01:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:01:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:01:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:01:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:01:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:01:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:01:14 virt11 kernel: Call Trace:
Feb 22 20:01:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:01:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:01:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:01:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:01:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:01:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:03:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:03:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:03:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:03:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:03:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:03:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:03:14 virt11 kernel: Call Trace:
Feb 22 20:03:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:03:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:03:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:03:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:03:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:03:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:05:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:05:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:05:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:05:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:05:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:05:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:05:14 virt11 kernel: Call Trace:
Feb 22 20:05:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:05:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:05:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:05:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:05:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:05:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:07:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:07:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:07:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:07:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:07:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:07:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:07:14 virt11 kernel: Call Trace:
Feb 22 20:07:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:07:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:07:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:07:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:07:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:07:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:09:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:09:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:09:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:09:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:09:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:09:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:09:14 virt11 kernel: Call Trace:
Feb 22 20:09:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:09:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:09:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:09:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:09:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:09:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:11:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:11:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:11:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:11:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:11:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:11:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:11:14 virt11 kernel: Call Trace:
Feb 22 20:11:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:11:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:11:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:11:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:11:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:11:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:13:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:13:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:13:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:13:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:13:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:13:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:13:14 virt11 kernel: Call Trace:
Feb 22 20:13:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:13:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:13:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:13:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:13:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:13:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
** Affects: qemu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/939027
Title:
Combining direct_io and non-direct_io leads to hang
Status in QEMU:
New
Bug description:
Version 0.12.2 - I know this isn't the latest but I looked through the
changelogs and couldn't find any references to this being fixed.
This is related to issues that many apps have, and is described in more detail here:
http://oss.sgi.com/archives/xfs/2010-07/msg00163.html
and:
https://bugs.launchpad.net/percona-xtrabackup/+bug/606981
When using both direct io and buffered io on the same file, you can cause corruption on the filesystem and other issues.
XFS out right hangs, but the problem exists on ext3 and other filesystems which silently carry on.
**this is a data corruption issue**.
This is the full stack trace we got from a recent hang:
Feb 22 19:55:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:55:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:55:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:55:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:55:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:55:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:55:14 virt11 kernel: Call Trace:
Feb 22 19:55:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:55:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:55:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:55:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:55:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:55:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:57:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:57:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:57:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:57:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:57:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:57:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:57:14 virt11 kernel: Call Trace:
Feb 22 19:57:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:57:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:57:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:57:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:57:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:57:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:59:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:59:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:59:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:59:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:59:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:59:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:59:14 virt11 kernel: Call Trace:
Feb 22 19:59:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:59:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:59:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:59:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:59:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:59:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:01:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:01:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:01:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:01:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:01:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:01:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:01:14 virt11 kernel: Call Trace:
Feb 22 20:01:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:01:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:01:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:01:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:01:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:01:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:03:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:03:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:03:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:03:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:03:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:03:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:03:14 virt11 kernel: Call Trace:
Feb 22 20:03:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:03:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:03:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:03:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:03:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:03:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:05:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:05:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:05:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:05:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:05:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:05:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:05:14 virt11 kernel: Call Trace:
Feb 22 20:05:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:05:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:05:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:05:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:05:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:05:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:07:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:07:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:07:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:07:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:07:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:07:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:07:14 virt11 kernel: Call Trace:
Feb 22 20:07:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:07:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:07:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:07:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:07:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:07:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:09:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:09:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:09:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:09:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:09:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:09:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:09:14 virt11 kernel: Call Trace:
Feb 22 20:09:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:09:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:09:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:09:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:09:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:09:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:11:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:11:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:11:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:11:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:11:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:11:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:11:14 virt11 kernel: Call Trace:
Feb 22 20:11:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:11:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:11:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:11:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:11:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:11:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:13:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:13:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:13:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:13:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:13:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:13:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:13:14 virt11 kernel: Call Trace:
Feb 22 20:13:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:13:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:13:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:13:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:13:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:13:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
To manage notifications about this bug go to:
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^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Qemu-devel] [Bug 939027] [NEW] Combining direct_io and non-direct_io leads to hang
2012-02-22 21:49 [Qemu-devel] [Bug 939027] [NEW] Combining direct_io and non-direct_io leads to hang Avleen Vig
@ 2012-02-23 9:12 ` Stefan Hajnoczi
2012-02-23 21:39 ` [Qemu-devel] [Bug 939027] " Avleen Vig
` (3 subsequent siblings)
4 siblings, 0 replies; 8+ messages in thread
From: Stefan Hajnoczi @ 2012-02-23 9:12 UTC (permalink / raw)
To: Avleen Vig; +Cc: qemu-devel
On Wed, Feb 22, 2012 at 09:49:59PM -0000, Avleen Vig wrote:
> Version 0.12.2 - I know this isn't the latest but I looked through the
> changelogs and couldn't find any references to this being fixed.
>
> This is related to issues that many apps have, and is described in more detail here:
> http://oss.sgi.com/archives/xfs/2010-07/msg00163.html
> and:
> https://bugs.launchpad.net/percona-xtrabackup/+bug/606981
>
> When using both direct io and buffered io on the same file, you can cause corruption on the filesystem and other issues.
> XFS out right hangs, but the problem exists on ext3 and other filesystems which silently carry on.
>
> **this is a data corruption issue**.
>
> This is the full stack trace we got from a recent hang:
I only see qemu-kvm in the backtrace. QEMU normally only access the
image file either with or without O_DIRECT - not both at the same time.
Were you running another program that accesses the image file at the
same time?
Stefan
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Qemu-devel] [Bug 939027] Re: Combining direct_io and non-direct_io leads to hang
2012-02-22 21:49 [Qemu-devel] [Bug 939027] [NEW] Combining direct_io and non-direct_io leads to hang Avleen Vig
2012-02-23 9:12 ` Stefan Hajnoczi
@ 2012-02-23 21:39 ` Avleen Vig
2012-02-24 6:37 ` Stefan Hajnoczi
2018-01-10 21:21 ` Thomas Huth
` (2 subsequent siblings)
4 siblings, 1 reply; 8+ messages in thread
From: Avleen Vig @ 2012-02-23 21:39 UTC (permalink / raw)
To: qemu-devel
Nothing else at all accesses those files, which is one of the things that concerned me the most :-/
It looks like it call came from the same place.
--
You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/939027
Title:
Combining direct_io and non-direct_io leads to hang
Status in QEMU:
New
Bug description:
Version 0.12.2 - I know this isn't the latest but I looked through the
changelogs and couldn't find any references to this being fixed.
This is related to issues that many apps have, and is described in more detail here:
http://oss.sgi.com/archives/xfs/2010-07/msg00163.html
and:
https://bugs.launchpad.net/percona-xtrabackup/+bug/606981
When using both direct io and buffered io on the same file, you can cause corruption on the filesystem and other issues.
XFS out right hangs, but the problem exists on ext3 and other filesystems which silently carry on.
**this is a data corruption issue**.
This is the full stack trace we got from a recent hang:
Feb 22 19:55:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:55:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:55:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:55:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:55:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:55:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:55:14 virt11 kernel: Call Trace:
Feb 22 19:55:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:55:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:55:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:55:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:55:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:55:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:57:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:57:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:57:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:57:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:57:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:57:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:57:14 virt11 kernel: Call Trace:
Feb 22 19:57:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:57:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:57:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:57:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:57:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:57:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:59:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:59:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:59:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:59:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:59:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:59:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:59:14 virt11 kernel: Call Trace:
Feb 22 19:59:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:59:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:59:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:59:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:59:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:59:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:01:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:01:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:01:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:01:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:01:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:01:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:01:14 virt11 kernel: Call Trace:
Feb 22 20:01:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:01:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:01:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:01:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:01:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:01:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:03:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:03:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:03:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:03:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:03:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:03:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:03:14 virt11 kernel: Call Trace:
Feb 22 20:03:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:03:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:03:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:03:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:03:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:03:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:05:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:05:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:05:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:05:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:05:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:05:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:05:14 virt11 kernel: Call Trace:
Feb 22 20:05:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:05:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:05:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:05:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:05:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:05:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:07:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:07:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:07:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:07:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:07:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:07:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:07:14 virt11 kernel: Call Trace:
Feb 22 20:07:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:07:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:07:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:07:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:07:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:07:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:09:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:09:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:09:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:09:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:09:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:09:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:09:14 virt11 kernel: Call Trace:
Feb 22 20:09:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:09:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:09:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:09:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:09:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:09:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:11:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:11:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:11:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:11:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:11:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:11:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:11:14 virt11 kernel: Call Trace:
Feb 22 20:11:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:11:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:11:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:11:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:11:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:11:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:13:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:13:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:13:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:13:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:13:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:13:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:13:14 virt11 kernel: Call Trace:
Feb 22 20:13:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:13:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:13:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:13:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:13:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:13:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/939027/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Qemu-devel] [Bug 939027] Re: Combining direct_io and non-direct_io leads to hang
2012-02-23 21:39 ` [Qemu-devel] [Bug 939027] " Avleen Vig
@ 2012-02-24 6:37 ` Stefan Hajnoczi
2012-02-24 6:47 ` Avleen Vig
0 siblings, 1 reply; 8+ messages in thread
From: Stefan Hajnoczi @ 2012-02-24 6:37 UTC (permalink / raw)
To: Bug 939027; +Cc: qemu-devel
On Thu, Feb 23, 2012 at 9:39 PM, Avleen Vig <939027@bugs.launchpad.net> wrote:
> Nothing else at all accesses those files, which is one of the things that concerned me the most :-/
> It looks like it call came from the same place.
It's possible to check the file descriptor flags using
/proc/$PID/fdinfo/$FD. So for example, you could find the qemu-kvm
process and list its open file descriptors using ls -l /proc/$(pgrep
qemu-kvm)/fd. Find the file descriptor to the image file and look up
its flags in /proc/$PID/fdinfo/$FD.
If the file descriptor has bit 040000 set then it is O_DIRECT. If
not, it uses buffered I/O.
Using this technique you could determine whether or not your system is
accessing the file using both direct and buffered I/O. It would also
tell you which processes are doing this.
Stefan
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Qemu-devel] [Bug 939027] Re: Combining direct_io and non-direct_io leads to hang
2012-02-24 6:37 ` Stefan Hajnoczi
@ 2012-02-24 6:47 ` Avleen Vig
0 siblings, 0 replies; 8+ messages in thread
From: Avleen Vig @ 2012-02-24 6:47 UTC (permalink / raw)
To: qemu-devel
Excellent. I will do this the next time I see this happen. It probably
won't be long.
On Feb 24, 2012 12:45 AM, "Stefan Hajnoczi" <939027@bugs.launchpad.net>
wrote:
> On Thu, Feb 23, 2012 at 9:39 PM, Avleen Vig <939027@bugs.launchpad.net>
> wrote:
> > Nothing else at all accesses those files, which is one of the things
> that concerned me the most :-/
> > It looks like it call came from the same place.
>
> It's possible to check the file descriptor flags using
> /proc/$PID/fdinfo/$FD. So for example, you could find the qemu-kvm
> process and list its open file descriptors using ls -l /proc/$(pgrep
> qemu-kvm)/fd. Find the file descriptor to the image file and look up
> its flags in /proc/$PID/fdinfo/$FD.
>
> If the file descriptor has bit 040000 set then it is O_DIRECT. If
> not, it uses buffered I/O.
>
> Using this technique you could determine whether or not your system is
> accessing the file using both direct and buffered I/O. It would also
> tell you which processes are doing this.
>
> Stefan
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/939027
>
> Title:
> Combining direct_io and non-direct_io leads to hang
>
> Status in QEMU:
> New
>
> Bug description:
> Version 0.12.2 - I know this isn't the latest but I looked through the
> changelogs and couldn't find any references to this being fixed.
>
> This is related to issues that many apps have, and is described in more
> detail here:
> http://oss.sgi.com/archives/xfs/2010-07/msg00163.html
> and:
> https://bugs.launchpad.net/percona-xtrabackup/+bug/606981
>
> When using both direct io and buffered io on the same file, you can cause
> corruption on the filesystem and other issues.
> XFS out right hangs, but the problem exists on ext3 and other filesystems
> which silently carry on.
>
> **this is a data corruption issue**.
>
> This is the full stack trace we got from a recent hang:
>
> Feb 22 19:55:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more
> than 120 seconds.
> Feb 22 19:55:14 virt11 kernel: "echo 0 >
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Feb 22 19:55:14 virt11 kernel: qemu-kvm D 0000000000000002 0
> 18360 1 0x00000080
> Feb 22 19:55:14 virt11 kernel: ffff8808614457e8 0000000000000086
> ffff8800282d5f80 ffff8800282d5f80
> Feb 22 19:55:14 virt11 kernel: ffff880861445768 ffffffff810573ce
> ffff880861445768 0000000000000086
> Feb 22 19:55:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8
> 000000000000f598 ffff8808f15bba78
> Feb 22 19:55:14 virt11 kernel: Call Trace:
> Feb 22 19:55:14 virt11 kernel: [<ffffffff810573ce>] ?
> activate_task+0x2e/0x40
> Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd755>]
> rwsem_down_failed_common+0x95/0x1d0
> Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd8b3>]
> rwsem_down_write_failed+0x23/0x30
> Feb 22 19:55:14 virt11 kernel: [<ffffffff8126e573>]
> call_rwsem_down_write_failed+0x13/0x20
> Feb 22 19:55:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
> Feb 22 19:55:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0
> [xfs]
> Feb 22 19:55:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440
> [xfs]
> Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354116>]
> __xfs_get_blocks+0x86/0x200 [xfs]
> Feb 22 19:55:14 virt11 kernel: [<ffffffffa03542aa>]
> xfs_get_blocks_direct+0x1a/0x20 [xfs]
> Feb 22 19:55:14 virt11 kernel: [<ffffffff811ac132>]
> __blockdev_direct_IO+0x872/0xc40
> Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353f50>]
> xfs_vm_direct_IO+0xb0/0xf0 [xfs]
> Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354290>] ?
> xfs_get_blocks_direct+0x0/0x20 [xfs]
> Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353cc0>] ?
> xfs_end_io_direct+0x0/0xe0 [xfs]
> Feb 22 19:55:14 virt11 kernel: [<ffffffff8106dd57>] ?
> current_fs_time+0x27/0x30
> Feb 22 19:55:14 virt11 kernel: [<ffffffff8110df22>]
> generic_file_direct_write+0xc2/0x190
> Feb 22 19:55:14 virt11 kernel: [<ffffffffa034bfcf>] ?
> xfs_trans_unlocked_item+0x4f/0x60 [xfs]
> Feb 22 19:55:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70
> [xfs]
> Feb 22 19:55:14 virt11 kernel: [<ffffffff8105dc72>] ?
> default_wake_function+0x12/0x20
> Feb 22 19:55:14 virt11 kernel: [<ffffffffa03599a1>]
> xfs_file_aio_write+0x61/0x70 [xfs]
> Feb 22 19:55:14 virt11 kernel: [<ffffffff8117241a>]
> do_sync_write+0xfa/0x140
> Feb 22 19:55:14 virt11 kernel: [<ffffffff8107fbc2>] ?
> send_signal+0x42/0x80
> Feb 22 19:55:14 virt11 kernel: [<ffffffff8108e160>] ?
> autoremove_wake_function+0x0/0x40
> Feb 22 19:55:14 virt11 kernel: [<ffffffff8107ff96>] ?
> group_send_sig_info+0x56/0x70
> Feb 22 19:55:14 virt11 kernel: [<ffffffff81211d3b>] ?
> selinux_file_permission+0xfb/0x150
> Feb 22 19:55:14 virt11 kernel: [<ffffffff812051a6>] ?
> security_file_permission+0x16/0x20
> Feb 22 19:55:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
> Feb 22 19:55:14 virt11 kernel: [<ffffffff810d1b62>] ?
> audit_syscall_entry+0x272/0x2a0
> Feb 22 19:55:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
> Feb 22 19:55:14 virt11 kernel: [<ffffffff8100b172>]
> system_call_fastpath+0x16/0x1b
> Feb 22 19:57:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more
> than 120 seconds.
> Feb 22 19:57:14 virt11 kernel: "echo 0 >
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Feb 22 19:57:14 virt11 kernel: qemu-kvm D 0000000000000002 0
> 18360 1 0x00000080
> Feb 22 19:57:14 virt11 kernel: ffff8808614457e8 0000000000000086
> ffff8800282d5f80 ffff8800282d5f80
> Feb 22 19:57:14 virt11 kernel: ffff880861445768 ffffffff810573ce
> ffff880861445768 0000000000000086
> Feb 22 19:57:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8
> 000000000000f598 ffff8808f15bba78
> Feb 22 19:57:14 virt11 kernel: Call Trace:
> Feb 22 19:57:14 virt11 kernel: [<ffffffff810573ce>] ?
> activate_task+0x2e/0x40
> Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd755>]
> rwsem_down_failed_common+0x95/0x1d0
> Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd8b3>]
> rwsem_down_write_failed+0x23/0x30
> Feb 22 19:57:14 virt11 kernel: [<ffffffff8126e573>]
> call_rwsem_down_write_failed+0x13/0x20
> Feb 22 19:57:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
> Feb 22 19:57:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0
> [xfs]
> Feb 22 19:57:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440
> [xfs]
> Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354116>]
> __xfs_get_blocks+0x86/0x200 [xfs]
> Feb 22 19:57:14 virt11 kernel: [<ffffffffa03542aa>]
> xfs_get_blocks_direct+0x1a/0x20 [xfs]
> Feb 22 19:57:14 virt11 kernel: [<ffffffff811ac132>]
> __blockdev_direct_IO+0x872/0xc40
> Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353f50>]
> xfs_vm_direct_IO+0xb0/0xf0 [xfs]
> Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354290>] ?
> xfs_get_blocks_direct+0x0/0x20 [xfs]
> Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353cc0>] ?
> xfs_end_io_direct+0x0/0xe0 [xfs]
> Feb 22 19:57:14 virt11 kernel: [<ffffffff8106dd57>] ?
> current_fs_time+0x27/0x30
> Feb 22 19:57:14 virt11 kernel: [<ffffffff8110df22>]
> generic_file_direct_write+0xc2/0x190
> Feb 22 19:57:14 virt11 kernel: [<ffffffffa034bfcf>] ?
> xfs_trans_unlocked_item+0x4f/0x60 [xfs]
> Feb 22 19:57:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70
> [xfs]
> Feb 22 19:57:14 virt11 kernel: [<ffffffff8105dc72>] ?
> default_wake_function+0x12/0x20
> Feb 22 19:57:14 virt11 kernel: [<ffffffffa03599a1>]
> xfs_file_aio_write+0x61/0x70 [xfs]
> Feb 22 19:57:14 virt11 kernel: [<ffffffff8117241a>]
> do_sync_write+0xfa/0x140
> Feb 22 19:57:14 virt11 kernel: [<ffffffff8107fbc2>] ?
> send_signal+0x42/0x80
> Feb 22 19:57:14 virt11 kernel: [<ffffffff8108e160>] ?
> autoremove_wake_function+0x0/0x40
> Feb 22 19:57:14 virt11 kernel: [<ffffffff8107ff96>] ?
> group_send_sig_info+0x56/0x70
> Feb 22 19:57:14 virt11 kernel: [<ffffffff81211d3b>] ?
> selinux_file_permission+0xfb/0x150
> Feb 22 19:57:14 virt11 kernel: [<ffffffff812051a6>] ?
> security_file_permission+0x16/0x20
> Feb 22 19:57:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
> Feb 22 19:57:14 virt11 kernel: [<ffffffff810d1b62>] ?
> audit_syscall_entry+0x272/0x2a0
> Feb 22 19:57:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
> Feb 22 19:57:14 virt11 kernel: [<ffffffff8100b172>]
> system_call_fastpath+0x16/0x1b
> Feb 22 19:59:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more
> than 120 seconds.
> Feb 22 19:59:14 virt11 kernel: "echo 0 >
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Feb 22 19:59:14 virt11 kernel: qemu-kvm D 0000000000000002 0
> 18360 1 0x00000080
> Feb 22 19:59:14 virt11 kernel: ffff8808614457e8 0000000000000086
> ffff8800282d5f80 ffff8800282d5f80
> Feb 22 19:59:14 virt11 kernel: ffff880861445768 ffffffff810573ce
> ffff880861445768 0000000000000086
> Feb 22 19:59:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8
> 000000000000f598 ffff8808f15bba78
> Feb 22 19:59:14 virt11 kernel: Call Trace:
> Feb 22 19:59:14 virt11 kernel: [<ffffffff810573ce>] ?
> activate_task+0x2e/0x40
> Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd755>]
> rwsem_down_failed_common+0x95/0x1d0
> Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd8b3>]
> rwsem_down_write_failed+0x23/0x30
> Feb 22 19:59:14 virt11 kernel: [<ffffffff8126e573>]
> call_rwsem_down_write_failed+0x13/0x20
> Feb 22 19:59:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
> Feb 22 19:59:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0
> [xfs]
> Feb 22 19:59:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440
> [xfs]
> Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354116>]
> __xfs_get_blocks+0x86/0x200 [xfs]
> Feb 22 19:59:14 virt11 kernel: [<ffffffffa03542aa>]
> xfs_get_blocks_direct+0x1a/0x20 [xfs]
> Feb 22 19:59:14 virt11 kernel: [<ffffffff811ac132>]
> __blockdev_direct_IO+0x872/0xc40
> Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353f50>]
> xfs_vm_direct_IO+0xb0/0xf0 [xfs]
> Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354290>] ?
> xfs_get_blocks_direct+0x0/0x20 [xfs]
> Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353cc0>] ?
> xfs_end_io_direct+0x0/0xe0 [xfs]
> Feb 22 19:59:14 virt11 kernel: [<ffffffff8106dd57>] ?
> current_fs_time+0x27/0x30
> Feb 22 19:59:14 virt11 kernel: [<ffffffff8110df22>]
> generic_file_direct_write+0xc2/0x190
> Feb 22 19:59:14 virt11 kernel: [<ffffffffa034bfcf>] ?
> xfs_trans_unlocked_item+0x4f/0x60 [xfs]
> Feb 22 19:59:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70
> [xfs]
> Feb 22 19:59:14 virt11 kernel: [<ffffffff8105dc72>] ?
> default_wake_function+0x12/0x20
> Feb 22 19:59:14 virt11 kernel: [<ffffffffa03599a1>]
> xfs_file_aio_write+0x61/0x70 [xfs]
> Feb 22 19:59:14 virt11 kernel: [<ffffffff8117241a>]
> do_sync_write+0xfa/0x140
> Feb 22 19:59:14 virt11 kernel: [<ffffffff8107fbc2>] ?
> send_signal+0x42/0x80
> Feb 22 19:59:14 virt11 kernel: [<ffffffff8108e160>] ?
> autoremove_wake_function+0x0/0x40
> Feb 22 19:59:14 virt11 kernel: [<ffffffff8107ff96>] ?
> group_send_sig_info+0x56/0x70
> Feb 22 19:59:14 virt11 kernel: [<ffffffff81211d3b>] ?
> selinux_file_permission+0xfb/0x150
> Feb 22 19:59:14 virt11 kernel: [<ffffffff812051a6>] ?
> security_file_permission+0x16/0x20
> Feb 22 19:59:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
> Feb 22 19:59:14 virt11 kernel: [<ffffffff810d1b62>] ?
> audit_syscall_entry+0x272/0x2a0
> Feb 22 19:59:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
> Feb 22 19:59:14 virt11 kernel: [<ffffffff8100b172>]
> system_call_fastpath+0x16/0x1b
> Feb 22 20:01:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more
> than 120 seconds.
> Feb 22 20:01:14 virt11 kernel: "echo 0 >
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Feb 22 20:01:14 virt11 kernel: qemu-kvm D 0000000000000002 0
> 18360 1 0x00000080
> Feb 22 20:01:14 virt11 kernel: ffff8808614457e8 0000000000000086
> ffff8800282d5f80 ffff8800282d5f80
> Feb 22 20:01:14 virt11 kernel: ffff880861445768 ffffffff810573ce
> ffff880861445768 0000000000000086
> Feb 22 20:01:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8
> 000000000000f598 ffff8808f15bba78
> Feb 22 20:01:14 virt11 kernel: Call Trace:
> Feb 22 20:01:14 virt11 kernel: [<ffffffff810573ce>] ?
> activate_task+0x2e/0x40
> Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd755>]
> rwsem_down_failed_common+0x95/0x1d0
> Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd8b3>]
> rwsem_down_write_failed+0x23/0x30
> Feb 22 20:01:14 virt11 kernel: [<ffffffff8126e573>]
> call_rwsem_down_write_failed+0x13/0x20
> Feb 22 20:01:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
> Feb 22 20:01:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0
> [xfs]
> Feb 22 20:01:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440
> [xfs]
> Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354116>]
> __xfs_get_blocks+0x86/0x200 [xfs]
> Feb 22 20:01:14 virt11 kernel: [<ffffffffa03542aa>]
> xfs_get_blocks_direct+0x1a/0x20 [xfs]
> Feb 22 20:01:14 virt11 kernel: [<ffffffff811ac132>]
> __blockdev_direct_IO+0x872/0xc40
> Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353f50>]
> xfs_vm_direct_IO+0xb0/0xf0 [xfs]
> Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354290>] ?
> xfs_get_blocks_direct+0x0/0x20 [xfs]
> Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353cc0>] ?
> xfs_end_io_direct+0x0/0xe0 [xfs]
> Feb 22 20:01:14 virt11 kernel: [<ffffffff8106dd57>] ?
> current_fs_time+0x27/0x30
> Feb 22 20:01:14 virt11 kernel: [<ffffffff8110df22>]
> generic_file_direct_write+0xc2/0x190
> Feb 22 20:01:14 virt11 kernel: [<ffffffffa034bfcf>] ?
> xfs_trans_unlocked_item+0x4f/0x60 [xfs]
> Feb 22 20:01:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70
> [xfs]
> Feb 22 20:01:14 virt11 kernel: [<ffffffff8105dc72>] ?
> default_wake_function+0x12/0x20
> Feb 22 20:01:14 virt11 kernel: [<ffffffffa03599a1>]
> xfs_file_aio_write+0x61/0x70 [xfs]
> Feb 22 20:01:14 virt11 kernel: [<ffffffff8117241a>]
> do_sync_write+0xfa/0x140
> Feb 22 20:01:14 virt11 kernel: [<ffffffff8107fbc2>] ?
> send_signal+0x42/0x80
> Feb 22 20:01:14 virt11 kernel: [<ffffffff8108e160>] ?
> autoremove_wake_function+0x0/0x40
> Feb 22 20:01:14 virt11 kernel: [<ffffffff8107ff96>] ?
> group_send_sig_info+0x56/0x70
> Feb 22 20:01:14 virt11 kernel: [<ffffffff81211d3b>] ?
> selinux_file_permission+0xfb/0x150
> Feb 22 20:01:14 virt11 kernel: [<ffffffff812051a6>] ?
> security_file_permission+0x16/0x20
> Feb 22 20:01:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
> Feb 22 20:01:14 virt11 kernel: [<ffffffff810d1b62>] ?
> audit_syscall_entry+0x272/0x2a0
> Feb 22 20:01:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
> Feb 22 20:01:14 virt11 kernel: [<ffffffff8100b172>]
> system_call_fastpath+0x16/0x1b
> Feb 22 20:03:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more
> than 120 seconds.
> Feb 22 20:03:14 virt11 kernel: "echo 0 >
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Feb 22 20:03:14 virt11 kernel: qemu-kvm D 0000000000000002 0
> 18360 1 0x00000080
> Feb 22 20:03:14 virt11 kernel: ffff8808614457e8 0000000000000086
> ffff8800282d5f80 ffff8800282d5f80
> Feb 22 20:03:14 virt11 kernel: ffff880861445768 ffffffff810573ce
> ffff880861445768 0000000000000086
> Feb 22 20:03:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8
> 000000000000f598 ffff8808f15bba78
> Feb 22 20:03:14 virt11 kernel: Call Trace:
> Feb 22 20:03:14 virt11 kernel: [<ffffffff810573ce>] ?
> activate_task+0x2e/0x40
> Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd755>]
> rwsem_down_failed_common+0x95/0x1d0
> Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd8b3>]
> rwsem_down_write_failed+0x23/0x30
> Feb 22 20:03:14 virt11 kernel: [<ffffffff8126e573>]
> call_rwsem_down_write_failed+0x13/0x20
> Feb 22 20:03:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
> Feb 22 20:03:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0
> [xfs]
> Feb 22 20:03:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440
> [xfs]
> Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354116>]
> __xfs_get_blocks+0x86/0x200 [xfs]
> Feb 22 20:03:14 virt11 kernel: [<ffffffffa03542aa>]
> xfs_get_blocks_direct+0x1a/0x20 [xfs]
> Feb 22 20:03:14 virt11 kernel: [<ffffffff811ac132>]
> __blockdev_direct_IO+0x872/0xc40
> Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353f50>]
> xfs_vm_direct_IO+0xb0/0xf0 [xfs]
> Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354290>] ?
> xfs_get_blocks_direct+0x0/0x20 [xfs]
> Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353cc0>] ?
> xfs_end_io_direct+0x0/0xe0 [xfs]
> Feb 22 20:03:14 virt11 kernel: [<ffffffff8106dd57>] ?
> current_fs_time+0x27/0x30
> Feb 22 20:03:14 virt11 kernel: [<ffffffff8110df22>]
> generic_file_direct_write+0xc2/0x190
> Feb 22 20:03:14 virt11 kernel: [<ffffffffa034bfcf>] ?
> xfs_trans_unlocked_item+0x4f/0x60 [xfs]
> Feb 22 20:03:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70
> [xfs]
> Feb 22 20:03:14 virt11 kernel: [<ffffffff8105dc72>] ?
> default_wake_function+0x12/0x20
> Feb 22 20:03:14 virt11 kernel: [<ffffffffa03599a1>]
> xfs_file_aio_write+0x61/0x70 [xfs]
> Feb 22 20:03:14 virt11 kernel: [<ffffffff8117241a>]
> do_sync_write+0xfa/0x140
> Feb 22 20:03:14 virt11 kernel: [<ffffffff8107fbc2>] ?
> send_signal+0x42/0x80
> Feb 22 20:03:14 virt11 kernel: [<ffffffff8108e160>] ?
> autoremove_wake_function+0x0/0x40
> Feb 22 20:03:14 virt11 kernel: [<ffffffff8107ff96>] ?
> group_send_sig_info+0x56/0x70
> Feb 22 20:03:14 virt11 kernel: [<ffffffff81211d3b>] ?
> selinux_file_permission+0xfb/0x150
> Feb 22 20:03:14 virt11 kernel: [<ffffffff812051a6>] ?
> security_file_permission+0x16/0x20
> Feb 22 20:03:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
> Feb 22 20:03:14 virt11 kernel: [<ffffffff810d1b62>] ?
> audit_syscall_entry+0x272/0x2a0
> Feb 22 20:03:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
> Feb 22 20:03:14 virt11 kernel: [<ffffffff8100b172>]
> system_call_fastpath+0x16/0x1b
> Feb 22 20:05:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more
> than 120 seconds.
> Feb 22 20:05:14 virt11 kernel: "echo 0 >
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Feb 22 20:05:14 virt11 kernel: qemu-kvm D 0000000000000002 0
> 18360 1 0x00000080
> Feb 22 20:05:14 virt11 kernel: ffff8808614457e8 0000000000000086
> ffff8800282d5f80 ffff8800282d5f80
> Feb 22 20:05:14 virt11 kernel: ffff880861445768 ffffffff810573ce
> ffff880861445768 0000000000000086
> Feb 22 20:05:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8
> 000000000000f598 ffff8808f15bba78
> Feb 22 20:05:14 virt11 kernel: Call Trace:
> Feb 22 20:05:14 virt11 kernel: [<ffffffff810573ce>] ?
> activate_task+0x2e/0x40
> Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd755>]
> rwsem_down_failed_common+0x95/0x1d0
> Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd8b3>]
> rwsem_down_write_failed+0x23/0x30
> Feb 22 20:05:14 virt11 kernel: [<ffffffff8126e573>]
> call_rwsem_down_write_failed+0x13/0x20
> Feb 22 20:05:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
> Feb 22 20:05:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0
> [xfs]
> Feb 22 20:05:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440
> [xfs]
> Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354116>]
> __xfs_get_blocks+0x86/0x200 [xfs]
> Feb 22 20:05:14 virt11 kernel: [<ffffffffa03542aa>]
> xfs_get_blocks_direct+0x1a/0x20 [xfs]
> Feb 22 20:05:14 virt11 kernel: [<ffffffff811ac132>]
> __blockdev_direct_IO+0x872/0xc40
> Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353f50>]
> xfs_vm_direct_IO+0xb0/0xf0 [xfs]
> Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354290>] ?
> xfs_get_blocks_direct+0x0/0x20 [xfs]
> Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353cc0>] ?
> xfs_end_io_direct+0x0/0xe0 [xfs]
> Feb 22 20:05:14 virt11 kernel: [<ffffffff8106dd57>] ?
> current_fs_time+0x27/0x30
> Feb 22 20:05:14 virt11 kernel: [<ffffffff8110df22>]
> generic_file_direct_write+0xc2/0x190
> Feb 22 20:05:14 virt11 kernel: [<ffffffffa034bfcf>] ?
> xfs_trans_unlocked_item+0x4f/0x60 [xfs]
> Feb 22 20:05:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70
> [xfs]
> Feb 22 20:05:14 virt11 kernel: [<ffffffff8105dc72>] ?
> default_wake_function+0x12/0x20
> Feb 22 20:05:14 virt11 kernel: [<ffffffffa03599a1>]
> xfs_file_aio_write+0x61/0x70 [xfs]
> Feb 22 20:05:14 virt11 kernel: [<ffffffff8117241a>]
> do_sync_write+0xfa/0x140
> Feb 22 20:05:14 virt11 kernel: [<ffffffff8107fbc2>] ?
> send_signal+0x42/0x80
> Feb 22 20:05:14 virt11 kernel: [<ffffffff8108e160>] ?
> autoremove_wake_function+0x0/0x40
> Feb 22 20:05:14 virt11 kernel: [<ffffffff8107ff96>] ?
> group_send_sig_info+0x56/0x70
> Feb 22 20:05:14 virt11 kernel: [<ffffffff81211d3b>] ?
> selinux_file_permission+0xfb/0x150
> Feb 22 20:05:14 virt11 kernel: [<ffffffff812051a6>] ?
> security_file_permission+0x16/0x20
> Feb 22 20:05:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
> Feb 22 20:05:14 virt11 kernel: [<ffffffff810d1b62>] ?
> audit_syscall_entry+0x272/0x2a0
> Feb 22 20:05:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
> Feb 22 20:05:14 virt11 kernel: [<ffffffff8100b172>]
> system_call_fastpath+0x16/0x1b
> Feb 22 20:07:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more
> than 120 seconds.
> Feb 22 20:07:14 virt11 kernel: "echo 0 >
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Feb 22 20:07:14 virt11 kernel: qemu-kvm D 0000000000000002 0
> 18360 1 0x00000080
> Feb 22 20:07:14 virt11 kernel: ffff8808614457e8 0000000000000086
> ffff8800282d5f80 ffff8800282d5f80
> Feb 22 20:07:14 virt11 kernel: ffff880861445768 ffffffff810573ce
> ffff880861445768 0000000000000086
> Feb 22 20:07:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8
> 000000000000f598 ffff8808f15bba78
> Feb 22 20:07:14 virt11 kernel: Call Trace:
> Feb 22 20:07:14 virt11 kernel: [<ffffffff810573ce>] ?
> activate_task+0x2e/0x40
> Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd755>]
> rwsem_down_failed_common+0x95/0x1d0
> Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd8b3>]
> rwsem_down_write_failed+0x23/0x30
> Feb 22 20:07:14 virt11 kernel: [<ffffffff8126e573>]
> call_rwsem_down_write_failed+0x13/0x20
> Feb 22 20:07:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
> Feb 22 20:07:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0
> [xfs]
> Feb 22 20:07:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440
> [xfs]
> Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354116>]
> __xfs_get_blocks+0x86/0x200 [xfs]
> Feb 22 20:07:14 virt11 kernel: [<ffffffffa03542aa>]
> xfs_get_blocks_direct+0x1a/0x20 [xfs]
> Feb 22 20:07:14 virt11 kernel: [<ffffffff811ac132>]
> __blockdev_direct_IO+0x872/0xc40
> Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353f50>]
> xfs_vm_direct_IO+0xb0/0xf0 [xfs]
> Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354290>] ?
> xfs_get_blocks_direct+0x0/0x20 [xfs]
> Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353cc0>] ?
> xfs_end_io_direct+0x0/0xe0 [xfs]
> Feb 22 20:07:14 virt11 kernel: [<ffffffff8106dd57>] ?
> current_fs_time+0x27/0x30
> Feb 22 20:07:14 virt11 kernel: [<ffffffff8110df22>]
> generic_file_direct_write+0xc2/0x190
> Feb 22 20:07:14 virt11 kernel: [<ffffffffa034bfcf>] ?
> xfs_trans_unlocked_item+0x4f/0x60 [xfs]
> Feb 22 20:07:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70
> [xfs]
> Feb 22 20:07:14 virt11 kernel: [<ffffffff8105dc72>] ?
> default_wake_function+0x12/0x20
> Feb 22 20:07:14 virt11 kernel: [<ffffffffa03599a1>]
> xfs_file_aio_write+0x61/0x70 [xfs]
> Feb 22 20:07:14 virt11 kernel: [<ffffffff8117241a>]
> do_sync_write+0xfa/0x140
> Feb 22 20:07:14 virt11 kernel: [<ffffffff8107fbc2>] ?
> send_signal+0x42/0x80
> Feb 22 20:07:14 virt11 kernel: [<ffffffff8108e160>] ?
> autoremove_wake_function+0x0/0x40
> Feb 22 20:07:14 virt11 kernel: [<ffffffff8107ff96>] ?
> group_send_sig_info+0x56/0x70
> Feb 22 20:07:14 virt11 kernel: [<ffffffff81211d3b>] ?
> selinux_file_permission+0xfb/0x150
> Feb 22 20:07:14 virt11 kernel: [<ffffffff812051a6>] ?
> security_file_permission+0x16/0x20
> Feb 22 20:07:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
> Feb 22 20:07:14 virt11 kernel: [<ffffffff810d1b62>] ?
> audit_syscall_entry+0x272/0x2a0
> Feb 22 20:07:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
> Feb 22 20:07:14 virt11 kernel: [<ffffffff8100b172>]
> system_call_fastpath+0x16/0x1b
> Feb 22 20:09:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more
> than 120 seconds.
> Feb 22 20:09:14 virt11 kernel: "echo 0 >
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Feb 22 20:09:14 virt11 kernel: qemu-kvm D 0000000000000002 0
> 18360 1 0x00000080
> Feb 22 20:09:14 virt11 kernel: ffff8808614457e8 0000000000000086
> ffff8800282d5f80 ffff8800282d5f80
> Feb 22 20:09:14 virt11 kernel: ffff880861445768 ffffffff810573ce
> ffff880861445768 0000000000000086
> Feb 22 20:09:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8
> 000000000000f598 ffff8808f15bba78
> Feb 22 20:09:14 virt11 kernel: Call Trace:
> Feb 22 20:09:14 virt11 kernel: [<ffffffff810573ce>] ?
> activate_task+0x2e/0x40
> Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd755>]
> rwsem_down_failed_common+0x95/0x1d0
> Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd8b3>]
> rwsem_down_write_failed+0x23/0x30
> Feb 22 20:09:14 virt11 kernel: [<ffffffff8126e573>]
> call_rwsem_down_write_failed+0x13/0x20
> Feb 22 20:09:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
> Feb 22 20:09:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0
> [xfs]
> Feb 22 20:09:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440
> [xfs]
> Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354116>]
> __xfs_get_blocks+0x86/0x200 [xfs]
> Feb 22 20:09:14 virt11 kernel: [<ffffffffa03542aa>]
> xfs_get_blocks_direct+0x1a/0x20 [xfs]
> Feb 22 20:09:14 virt11 kernel: [<ffffffff811ac132>]
> __blockdev_direct_IO+0x872/0xc40
> Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353f50>]
> xfs_vm_direct_IO+0xb0/0xf0 [xfs]
> Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354290>] ?
> xfs_get_blocks_direct+0x0/0x20 [xfs]
> Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353cc0>] ?
> xfs_end_io_direct+0x0/0xe0 [xfs]
> Feb 22 20:09:14 virt11 kernel: [<ffffffff8106dd57>] ?
> current_fs_time+0x27/0x30
> Feb 22 20:09:14 virt11 kernel: [<ffffffff8110df22>]
> generic_file_direct_write+0xc2/0x190
> Feb 22 20:09:14 virt11 kernel: [<ffffffffa034bfcf>] ?
> xfs_trans_unlocked_item+0x4f/0x60 [xfs]
> Feb 22 20:09:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70
> [xfs]
> Feb 22 20:09:14 virt11 kernel: [<ffffffff8105dc72>] ?
> default_wake_function+0x12/0x20
> Feb 22 20:09:14 virt11 kernel: [<ffffffffa03599a1>]
> xfs_file_aio_write+0x61/0x70 [xfs]
> Feb 22 20:09:14 virt11 kernel: [<ffffffff8117241a>]
> do_sync_write+0xfa/0x140
> Feb 22 20:09:14 virt11 kernel: [<ffffffff8107fbc2>] ?
> send_signal+0x42/0x80
> Feb 22 20:09:14 virt11 kernel: [<ffffffff8108e160>] ?
> autoremove_wake_function+0x0/0x40
> Feb 22 20:09:14 virt11 kernel: [<ffffffff8107ff96>] ?
> group_send_sig_info+0x56/0x70
> Feb 22 20:09:14 virt11 kernel: [<ffffffff81211d3b>] ?
> selinux_file_permission+0xfb/0x150
> Feb 22 20:09:14 virt11 kernel: [<ffffffff812051a6>] ?
> security_file_permission+0x16/0x20
> Feb 22 20:09:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
> Feb 22 20:09:14 virt11 kernel: [<ffffffff810d1b62>] ?
> audit_syscall_entry+0x272/0x2a0
> Feb 22 20:09:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
> Feb 22 20:09:14 virt11 kernel: [<ffffffff8100b172>]
> system_call_fastpath+0x16/0x1b
> Feb 22 20:11:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more
> than 120 seconds.
> Feb 22 20:11:14 virt11 kernel: "echo 0 >
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Feb 22 20:11:14 virt11 kernel: qemu-kvm D 0000000000000002 0
> 18360 1 0x00000080
> Feb 22 20:11:14 virt11 kernel: ffff8808614457e8 0000000000000086
> ffff8800282d5f80 ffff8800282d5f80
> Feb 22 20:11:14 virt11 kernel: ffff880861445768 ffffffff810573ce
> ffff880861445768 0000000000000086
> Feb 22 20:11:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8
> 000000000000f598 ffff8808f15bba78
> Feb 22 20:11:14 virt11 kernel: Call Trace:
> Feb 22 20:11:14 virt11 kernel: [<ffffffff810573ce>] ?
> activate_task+0x2e/0x40
> Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd755>]
> rwsem_down_failed_common+0x95/0x1d0
> Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd8b3>]
> rwsem_down_write_failed+0x23/0x30
> Feb 22 20:11:14 virt11 kernel: [<ffffffff8126e573>]
> call_rwsem_down_write_failed+0x13/0x20
> Feb 22 20:11:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
> Feb 22 20:11:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0
> [xfs]
> Feb 22 20:11:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440
> [xfs]
> Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354116>]
> __xfs_get_blocks+0x86/0x200 [xfs]
> Feb 22 20:11:14 virt11 kernel: [<ffffffffa03542aa>]
> xfs_get_blocks_direct+0x1a/0x20 [xfs]
> Feb 22 20:11:14 virt11 kernel: [<ffffffff811ac132>]
> __blockdev_direct_IO+0x872/0xc40
> Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353f50>]
> xfs_vm_direct_IO+0xb0/0xf0 [xfs]
> Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354290>] ?
> xfs_get_blocks_direct+0x0/0x20 [xfs]
> Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353cc0>] ?
> xfs_end_io_direct+0x0/0xe0 [xfs]
> Feb 22 20:11:14 virt11 kernel: [<ffffffff8106dd57>] ?
> current_fs_time+0x27/0x30
> Feb 22 20:11:14 virt11 kernel: [<ffffffff8110df22>]
> generic_file_direct_write+0xc2/0x190
> Feb 22 20:11:14 virt11 kernel: [<ffffffffa034bfcf>] ?
> xfs_trans_unlocked_item+0x4f/0x60 [xfs]
> Feb 22 20:11:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70
> [xfs]
> Feb 22 20:11:14 virt11 kernel: [<ffffffff8105dc72>] ?
> default_wake_function+0x12/0x20
> Feb 22 20:11:14 virt11 kernel: [<ffffffffa03599a1>]
> xfs_file_aio_write+0x61/0x70 [xfs]
> Feb 22 20:11:14 virt11 kernel: [<ffffffff8117241a>]
> do_sync_write+0xfa/0x140
> Feb 22 20:11:14 virt11 kernel: [<ffffffff8107fbc2>] ?
> send_signal+0x42/0x80
> Feb 22 20:11:14 virt11 kernel: [<ffffffff8108e160>] ?
> autoremove_wake_function+0x0/0x40
> Feb 22 20:11:14 virt11 kernel: [<ffffffff8107ff96>] ?
> group_send_sig_info+0x56/0x70
> Feb 22 20:11:14 virt11 kernel: [<ffffffff81211d3b>] ?
> selinux_file_permission+0xfb/0x150
> Feb 22 20:11:14 virt11 kernel: [<ffffffff812051a6>] ?
> security_file_permission+0x16/0x20
> Feb 22 20:11:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
> Feb 22 20:11:14 virt11 kernel: [<ffffffff810d1b62>] ?
> audit_syscall_entry+0x272/0x2a0
> Feb 22 20:11:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
> Feb 22 20:11:14 virt11 kernel: [<ffffffff8100b172>]
> system_call_fastpath+0x16/0x1b
> Feb 22 20:13:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more
> than 120 seconds.
> Feb 22 20:13:14 virt11 kernel: "echo 0 >
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Feb 22 20:13:14 virt11 kernel: qemu-kvm D 0000000000000002 0
> 18360 1 0x00000080
> Feb 22 20:13:14 virt11 kernel: ffff8808614457e8 0000000000000086
> ffff8800282d5f80 ffff8800282d5f80
> Feb 22 20:13:14 virt11 kernel: ffff880861445768 ffffffff810573ce
> ffff880861445768 0000000000000086
> Feb 22 20:13:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8
> 000000000000f598 ffff8808f15bba78
> Feb 22 20:13:14 virt11 kernel: Call Trace:
> Feb 22 20:13:14 virt11 kernel: [<ffffffff810573ce>] ?
> activate_task+0x2e/0x40
> Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd755>]
> rwsem_down_failed_common+0x95/0x1d0
> Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd8b3>]
> rwsem_down_write_failed+0x23/0x30
> Feb 22 20:13:14 virt11 kernel: [<ffffffff8126e573>]
> call_rwsem_down_write_failed+0x13/0x20
> Feb 22 20:13:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
> Feb 22 20:13:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0
> [xfs]
> Feb 22 20:13:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440
> [xfs]
> Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354116>]
> __xfs_get_blocks+0x86/0x200 [xfs]
> Feb 22 20:13:14 virt11 kernel: [<ffffffffa03542aa>]
> xfs_get_blocks_direct+0x1a/0x20 [xfs]
> Feb 22 20:13:14 virt11 kernel: [<ffffffff811ac132>]
> __blockdev_direct_IO+0x872/0xc40
> Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353f50>]
> xfs_vm_direct_IO+0xb0/0xf0 [xfs]
> Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354290>] ?
> xfs_get_blocks_direct+0x0/0x20 [xfs]
> Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353cc0>] ?
> xfs_end_io_direct+0x0/0xe0 [xfs]
> Feb 22 20:13:14 virt11 kernel: [<ffffffff8106dd57>] ?
> current_fs_time+0x27/0x30
> Feb 22 20:13:14 virt11 kernel: [<ffffffff8110df22>]
> generic_file_direct_write+0xc2/0x190
> Feb 22 20:13:14 virt11 kernel: [<ffffffffa034bfcf>] ?
> xfs_trans_unlocked_item+0x4f/0x60 [xfs]
> Feb 22 20:13:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70
> [xfs]
> Feb 22 20:13:14 virt11 kernel: [<ffffffff8105dc72>] ?
> default_wake_function+0x12/0x20
> Feb 22 20:13:14 virt11 kernel: [<ffffffffa03599a1>]
> xfs_file_aio_write+0x61/0x70 [xfs]
> Feb 22 20:13:14 virt11 kernel: [<ffffffff8117241a>]
> do_sync_write+0xfa/0x140
> Feb 22 20:13:14 virt11 kernel: [<ffffffff8107fbc2>] ?
> send_signal+0x42/0x80
> Feb 22 20:13:14 virt11 kernel: [<ffffffff8108e160>] ?
> autoremove_wake_function+0x0/0x40
> Feb 22 20:13:14 virt11 kernel: [<ffffffff8107ff96>] ?
> group_send_sig_info+0x56/0x70
> Feb 22 20:13:14 virt11 kernel: [<ffffffff81211d3b>] ?
> selinux_file_permission+0xfb/0x150
> Feb 22 20:13:14 virt11 kernel: [<ffffffff812051a6>] ?
> security_file_permission+0x16/0x20
> Feb 22 20:13:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
> Feb 22 20:13:14 virt11 kernel: [<ffffffff810d1b62>] ?
> audit_syscall_entry+0x272/0x2a0
> Feb 22 20:13:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
> Feb 22 20:13:14 virt11 kernel: [<ffffffff8100b172>]
> system_call_fastpath+0x16/0x1b
>
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>
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https://bugs.launchpad.net/bugs/939027
Title:
Combining direct_io and non-direct_io leads to hang
Status in QEMU:
New
Bug description:
Version 0.12.2 - I know this isn't the latest but I looked through the
changelogs and couldn't find any references to this being fixed.
This is related to issues that many apps have, and is described in more detail here:
http://oss.sgi.com/archives/xfs/2010-07/msg00163.html
and:
https://bugs.launchpad.net/percona-xtrabackup/+bug/606981
When using both direct io and buffered io on the same file, you can cause corruption on the filesystem and other issues.
XFS out right hangs, but the problem exists on ext3 and other filesystems which silently carry on.
**this is a data corruption issue**.
This is the full stack trace we got from a recent hang:
Feb 22 19:55:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:55:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:55:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:55:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:55:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:55:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:55:14 virt11 kernel: Call Trace:
Feb 22 19:55:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:55:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:55:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:55:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:55:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:55:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:57:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:57:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:57:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:57:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:57:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:57:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:57:14 virt11 kernel: Call Trace:
Feb 22 19:57:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:57:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:57:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:57:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:57:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:57:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:59:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:59:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:59:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:59:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:59:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:59:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:59:14 virt11 kernel: Call Trace:
Feb 22 19:59:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:59:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:59:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:59:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:59:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:59:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:01:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:01:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:01:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:01:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:01:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:01:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:01:14 virt11 kernel: Call Trace:
Feb 22 20:01:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:01:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:01:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:01:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:01:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:01:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:03:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:03:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:03:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:03:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:03:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:03:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:03:14 virt11 kernel: Call Trace:
Feb 22 20:03:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:03:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:03:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:03:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:03:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:03:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:05:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:05:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:05:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:05:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:05:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:05:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:05:14 virt11 kernel: Call Trace:
Feb 22 20:05:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:05:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:05:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:05:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:05:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:05:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:07:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:07:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:07:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:07:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:07:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:07:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:07:14 virt11 kernel: Call Trace:
Feb 22 20:07:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:07:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:07:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:07:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:07:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:07:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:09:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:09:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:09:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:09:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:09:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:09:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:09:14 virt11 kernel: Call Trace:
Feb 22 20:09:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:09:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:09:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:09:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:09:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:09:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:11:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:11:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:11:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:11:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:11:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:11:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:11:14 virt11 kernel: Call Trace:
Feb 22 20:11:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:11:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:11:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:11:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:11:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:11:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:13:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:13:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:13:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:13:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:13:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:13:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:13:14 virt11 kernel: Call Trace:
Feb 22 20:13:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:13:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:13:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:13:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:13:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:13:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
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^ permalink raw reply [flat|nested] 8+ messages in thread
* [Qemu-devel] [Bug 939027] Re: Combining direct_io and non-direct_io leads to hang
2012-02-22 21:49 [Qemu-devel] [Bug 939027] [NEW] Combining direct_io and non-direct_io leads to hang Avleen Vig
2012-02-23 9:12 ` Stefan Hajnoczi
2012-02-23 21:39 ` [Qemu-devel] [Bug 939027] " Avleen Vig
@ 2018-01-10 21:21 ` Thomas Huth
2018-01-10 22:14 ` Avleen Vig
2018-01-12 10:50 ` Thomas Huth
4 siblings, 0 replies; 8+ messages in thread
From: Thomas Huth @ 2018-01-10 21:21 UTC (permalink / raw)
To: qemu-devel
Triaging old bug tickets... can you still reproduce this issue with the
latest version of QEMU? Or could we close this ticket nowadays?
** Changed in: qemu
Status: New => Incomplete
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/939027
Title:
Combining direct_io and non-direct_io leads to hang
Status in QEMU:
Incomplete
Bug description:
Version 0.12.2 - I know this isn't the latest but I looked through the
changelogs and couldn't find any references to this being fixed.
This is related to issues that many apps have, and is described in more detail here:
http://oss.sgi.com/archives/xfs/2010-07/msg00163.html
and:
https://bugs.launchpad.net/percona-xtrabackup/+bug/606981
When using both direct io and buffered io on the same file, you can cause corruption on the filesystem and other issues.
XFS out right hangs, but the problem exists on ext3 and other filesystems which silently carry on.
**this is a data corruption issue**.
This is the full stack trace we got from a recent hang:
Feb 22 19:55:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:55:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:55:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:55:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:55:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:55:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:55:14 virt11 kernel: Call Trace:
Feb 22 19:55:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:55:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:55:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:55:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:55:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:55:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:57:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:57:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:57:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:57:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:57:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:57:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:57:14 virt11 kernel: Call Trace:
Feb 22 19:57:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:57:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:57:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:57:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:57:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:57:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:59:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:59:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:59:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:59:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:59:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:59:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:59:14 virt11 kernel: Call Trace:
Feb 22 19:59:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:59:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:59:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:59:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:59:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:59:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:01:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:01:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:01:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:01:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:01:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:01:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:01:14 virt11 kernel: Call Trace:
Feb 22 20:01:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:01:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:01:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:01:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:01:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:01:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:03:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:03:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:03:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:03:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:03:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:03:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:03:14 virt11 kernel: Call Trace:
Feb 22 20:03:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:03:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:03:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:03:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:03:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:03:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:05:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:05:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:05:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:05:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:05:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:05:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:05:14 virt11 kernel: Call Trace:
Feb 22 20:05:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:05:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:05:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:05:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:05:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:05:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:07:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:07:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:07:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:07:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:07:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:07:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:07:14 virt11 kernel: Call Trace:
Feb 22 20:07:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:07:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:07:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:07:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:07:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:07:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:09:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:09:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:09:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:09:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:09:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:09:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:09:14 virt11 kernel: Call Trace:
Feb 22 20:09:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:09:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:09:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:09:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:09:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:09:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:11:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:11:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:11:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:11:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:11:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:11:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:11:14 virt11 kernel: Call Trace:
Feb 22 20:11:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:11:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:11:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:11:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:11:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:11:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:13:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:13:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:13:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:13:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:13:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:13:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:13:14 virt11 kernel: Call Trace:
Feb 22 20:13:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:13:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:13:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:13:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:13:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:13:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
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* [Qemu-devel] [Bug 939027] Re: Combining direct_io and non-direct_io leads to hang
2012-02-22 21:49 [Qemu-devel] [Bug 939027] [NEW] Combining direct_io and non-direct_io leads to hang Avleen Vig
` (2 preceding siblings ...)
2018-01-10 21:21 ` Thomas Huth
@ 2018-01-10 22:14 ` Avleen Vig
2018-01-12 10:50 ` Thomas Huth
4 siblings, 0 replies; 8+ messages in thread
From: Avleen Vig @ 2018-01-10 22:14 UTC (permalink / raw)
To: qemu-devel
Unfortunately I don't have access to a qemu instance to test this any
more :)
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/939027
Title:
Combining direct_io and non-direct_io leads to hang
Status in QEMU:
Incomplete
Bug description:
Version 0.12.2 - I know this isn't the latest but I looked through the
changelogs and couldn't find any references to this being fixed.
This is related to issues that many apps have, and is described in more detail here:
http://oss.sgi.com/archives/xfs/2010-07/msg00163.html
and:
https://bugs.launchpad.net/percona-xtrabackup/+bug/606981
When using both direct io and buffered io on the same file, you can cause corruption on the filesystem and other issues.
XFS out right hangs, but the problem exists on ext3 and other filesystems which silently carry on.
**this is a data corruption issue**.
This is the full stack trace we got from a recent hang:
Feb 22 19:55:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:55:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:55:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:55:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:55:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:55:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:55:14 virt11 kernel: Call Trace:
Feb 22 19:55:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:55:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:55:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:55:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:55:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:55:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:57:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:57:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:57:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:57:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:57:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:57:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:57:14 virt11 kernel: Call Trace:
Feb 22 19:57:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:57:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:57:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:57:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:57:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:57:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:59:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:59:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:59:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:59:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:59:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:59:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:59:14 virt11 kernel: Call Trace:
Feb 22 19:59:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:59:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:59:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:59:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:59:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:59:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:01:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:01:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:01:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:01:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:01:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:01:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:01:14 virt11 kernel: Call Trace:
Feb 22 20:01:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:01:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:01:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:01:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:01:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:01:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:03:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:03:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:03:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:03:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:03:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:03:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:03:14 virt11 kernel: Call Trace:
Feb 22 20:03:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:03:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:03:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:03:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:03:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:03:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:05:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:05:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:05:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:05:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:05:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:05:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:05:14 virt11 kernel: Call Trace:
Feb 22 20:05:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:05:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:05:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:05:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:05:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:05:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:07:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:07:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:07:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:07:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:07:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:07:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:07:14 virt11 kernel: Call Trace:
Feb 22 20:07:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:07:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:07:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:07:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:07:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:07:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:09:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:09:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:09:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:09:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:09:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:09:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:09:14 virt11 kernel: Call Trace:
Feb 22 20:09:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:09:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:09:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:09:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:09:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:09:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:11:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:11:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:11:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:11:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:11:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:11:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:11:14 virt11 kernel: Call Trace:
Feb 22 20:11:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:11:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:11:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:11:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:11:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:11:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:13:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:13:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:13:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:13:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:13:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:13:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:13:14 virt11 kernel: Call Trace:
Feb 22 20:13:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:13:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:13:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:13:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:13:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:13:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
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^ permalink raw reply [flat|nested] 8+ messages in thread
* [Qemu-devel] [Bug 939027] Re: Combining direct_io and non-direct_io leads to hang
2012-02-22 21:49 [Qemu-devel] [Bug 939027] [NEW] Combining direct_io and non-direct_io leads to hang Avleen Vig
` (3 preceding siblings ...)
2018-01-10 22:14 ` Avleen Vig
@ 2018-01-12 10:50 ` Thomas Huth
4 siblings, 0 replies; 8+ messages in thread
From: Thomas Huth @ 2018-01-12 10:50 UTC (permalink / raw)
To: qemu-devel
** Changed in: qemu
Status: Incomplete => Won't Fix
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https://bugs.launchpad.net/bugs/939027
Title:
Combining direct_io and non-direct_io leads to hang
Status in QEMU:
Won't Fix
Bug description:
Version 0.12.2 - I know this isn't the latest but I looked through the
changelogs and couldn't find any references to this being fixed.
This is related to issues that many apps have, and is described in more detail here:
http://oss.sgi.com/archives/xfs/2010-07/msg00163.html
and:
https://bugs.launchpad.net/percona-xtrabackup/+bug/606981
When using both direct io and buffered io on the same file, you can cause corruption on the filesystem and other issues.
XFS out right hangs, but the problem exists on ext3 and other filesystems which silently carry on.
**this is a data corruption issue**.
This is the full stack trace we got from a recent hang:
Feb 22 19:55:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:55:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:55:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:55:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:55:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:55:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:55:14 virt11 kernel: Call Trace:
Feb 22 19:55:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:55:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:55:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:55:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:55:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:55:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:55:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:55:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:55:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:55:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:57:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:57:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:57:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:57:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:57:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:57:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:57:14 virt11 kernel: Call Trace:
Feb 22 19:57:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:57:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:57:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:57:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:57:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:57:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:57:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:57:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:57:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:57:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 19:59:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:59:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 19:59:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:59:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:59:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:59:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:59:14 virt11 kernel: Call Trace:
Feb 22 19:59:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 19:59:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 19:59:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 19:59:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 19:59:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 19:59:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 19:59:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 19:59:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 19:59:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 19:59:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:01:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:01:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:01:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:01:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:01:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:01:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:01:14 virt11 kernel: Call Trace:
Feb 22 20:01:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:01:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:01:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:01:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:01:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:01:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:01:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:01:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:01:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:01:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:03:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:03:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:03:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:03:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:03:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:03:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:03:14 virt11 kernel: Call Trace:
Feb 22 20:03:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:03:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:03:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:03:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:03:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:03:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:03:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:03:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:03:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:03:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:05:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:05:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:05:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:05:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:05:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:05:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:05:14 virt11 kernel: Call Trace:
Feb 22 20:05:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:05:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:05:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:05:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:05:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:05:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:05:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:05:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:05:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:05:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:07:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:07:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:07:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:07:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:07:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:07:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:07:14 virt11 kernel: Call Trace:
Feb 22 20:07:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:07:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:07:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:07:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:07:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:07:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:07:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:07:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:07:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:07:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:09:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:09:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:09:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:09:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:09:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:09:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:09:14 virt11 kernel: Call Trace:
Feb 22 20:09:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:09:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:09:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:09:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:09:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:09:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:09:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:09:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:09:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:09:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:11:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:11:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:11:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:11:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:11:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:11:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:11:14 virt11 kernel: Call Trace:
Feb 22 20:11:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:11:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:11:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:11:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:11:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:11:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:11:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:11:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:11:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:11:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
Feb 22 20:13:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:13:14 virt11 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 22 20:13:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:13:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:13:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:13:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:13:14 virt11 kernel: Call Trace:
Feb 22 20:13:14 virt11 kernel: [<ffffffff810573ce>] ? activate_task+0x2e/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd755>] rwsem_down_failed_common+0x95/0x1d0
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd8b3>] rwsem_down_write_failed+0x23/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8126e573>] call_rwsem_down_write_failed+0x13/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dcdb2>] ? down_write+0x32/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0332d6e>] xfs_ilock+0x7e/0xd0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa033ab02>] xfs_iomap+0x2e2/0x440 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354116>] __xfs_get_blocks+0x86/0x200 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03542aa>] xfs_get_blocks_direct+0x1a/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff811ac132>] __blockdev_direct_IO+0x872/0xc40
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353f50>] xfs_vm_direct_IO+0xb0/0xf0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354290>] ? xfs_get_blocks_direct+0x0/0x20 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353cc0>] ? xfs_end_io_direct+0x0/0xe0 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8106dd57>] ? current_fs_time+0x27/0x30
Feb 22 20:13:14 virt11 kernel: [<ffffffff8110df22>] generic_file_direct_write+0xc2/0x190
Feb 22 20:13:14 virt11 kernel: [<ffffffffa034bfcf>] ? xfs_trans_unlocked_item+0x4f/0x60 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffffa035dd1d>] xfs_write+0x4fd/0xb70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8105dc72>] ? default_wake_function+0x12/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffffa03599a1>] xfs_file_aio_write+0x61/0x70 [xfs]
Feb 22 20:13:14 virt11 kernel: [<ffffffff8117241a>] do_sync_write+0xfa/0x140
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107fbc2>] ? send_signal+0x42/0x80
Feb 22 20:13:14 virt11 kernel: [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107ff96>] ? group_send_sig_info+0x56/0x70
Feb 22 20:13:14 virt11 kernel: [<ffffffff81211d3b>] ? selinux_file_permission+0xfb/0x150
Feb 22 20:13:14 virt11 kernel: [<ffffffff812051a6>] ? security_file_permission+0x16/0x20
Feb 22 20:13:14 virt11 kernel: [<ffffffff81172718>] vfs_write+0xb8/0x1a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff810d1b62>] ? audit_syscall_entry+0x272/0x2a0
Feb 22 20:13:14 virt11 kernel: [<ffffffff81173212>] sys_pwrite64+0x82/0xa0
Feb 22 20:13:14 virt11 kernel: [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/939027/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2018-01-12 11:00 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-02-22 21:49 [Qemu-devel] [Bug 939027] [NEW] Combining direct_io and non-direct_io leads to hang Avleen Vig
2012-02-23 9:12 ` Stefan Hajnoczi
2012-02-23 21:39 ` [Qemu-devel] [Bug 939027] " Avleen Vig
2012-02-24 6:37 ` Stefan Hajnoczi
2012-02-24 6:47 ` Avleen Vig
2018-01-10 21:21 ` Thomas Huth
2018-01-10 22:14 ` Avleen Vig
2018-01-12 10:50 ` Thomas Huth
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