From: youyunyehe <youyunyehe@126.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [Bug 1434779] [NEW] qemu hangs on live-migration with storage(virtual machine: windows Server 2008 with only one disk )
Date: Sat, 21 Mar 2015 07:44:37 -0000 [thread overview]
Message-ID: <20150321074437.16517.74688.malonedeb@gac.canonical.com> (raw)
In-Reply-To: 20150321074437.16517.74688.malonedeb@gac.canonical.com
Public bug reported:
Hi,
We are using “Windows Server 2008” with qemu-kvm-2.0.1 (linux kernel:3.10.0) as a host of a VM.
Using drive_mirror to do live-migration on the same host for different disks
Local disk: /sf/data/local/
Shared disk(iscsi): /sf/other/local/ --- the disk is busy, the IO rate is about 30MB/s
qemu-system-x86_64 -k en-us -m 2048 -smp 2 -vnc :3100 -usbdevice tablet -boot c -enable-kvm -drive file=/sf/data/local/vm-disk-1.qcow2,if=none,id=drive-ide0,cache=none,aio=native -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0,bootindex=100
Step 1:
Start migration: Drive_mirror -f drive-ide0 /sf/other/local/test.qcow2
Step 2:
When detect the migration has completed, then send cmd: block_job_complete -f drive-ide0
Step 3:
send cmd: info status
What surprised me is that the qemu monitor reports can’t be connected.
Then find bellows:
The qemu process hangs on the mirror_run->bdrv_drain_all->aio_poll->qemu_poll_ns->ppoll (),
None events were received and poll forever. I don’t know why the aio can’t be responsed. This case is hardly to
be generated but it really happens sometimes . I’m looking forward to getting help from you .
The stack capture snapshot:
Thanks
MyAngle
** Affects: qemu
Importance: Undecided
Status: New
** Tags: drive migration mirror
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https://bugs.launchpad.net/bugs/1434779
Title:
qemu hangs on live-migration with storage(virtual machine: windows
Server 2008 with only one disk )
Status in QEMU:
New
Bug description:
Hi,
We are using “Windows Server 2008” with qemu-kvm-2.0.1 (linux kernel:3.10.0) as a host of a VM.
Using drive_mirror to do live-migration on the same host for different disks
Local disk: /sf/data/local/
Shared disk(iscsi): /sf/other/local/ --- the disk is busy, the IO rate is about 30MB/s
qemu-system-x86_64 -k en-us -m 2048 -smp 2 -vnc :3100 -usbdevice tablet -boot c -enable-kvm -drive file=/sf/data/local/vm-disk-1.qcow2,if=none,id=drive-ide0,cache=none,aio=native -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0,bootindex=100
Step 1:
Start migration: Drive_mirror -f drive-ide0 /sf/other/local/test.qcow2
Step 2:
When detect the migration has completed, then send cmd: block_job_complete -f drive-ide0
Step 3:
send cmd: info status
What surprised me is that the qemu monitor reports can’t be connected.
Then find bellows:
The qemu process hangs on the mirror_run->bdrv_drain_all->aio_poll->qemu_poll_ns->ppoll (),
None events were received and poll forever. I don’t know why the aio can’t be responsed. This case is hardly to
be generated but it really happens sometimes . I’m looking forward to getting help from you .
The stack capture snapshot:
Thanks
MyAngle
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1434779/+subscriptions
next parent reply other threads:[~2015-03-21 7:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-21 7:44 youyunyehe [this message]
2015-03-21 7:45 ` [Qemu-devel] [Bug 1434779] Re: qemu hangs on live-migration with storage(virtual machine: windows Server 2008 with only one disk ) youyunyehe
2015-03-23 13:32 ` [Qemu-devel] [Bug 1434779] [NEW] " Stefan Hajnoczi
2015-03-31 11:03 ` Halsey Pian
2018-05-22 13:26 ` [Qemu-devel] [Bug 1434779] " Thomas Huth
2018-07-22 4:17 ` Launchpad Bug Tracker
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