* btrfs: warn_slowpath in clean_tree_block and others
@ 2009-02-24 23:02 Hugo Mills
2009-02-25 4:22 ` Mitch Harder (aka DontPanic)
2009-02-25 18:36 ` Chris Mason
0 siblings, 2 replies; 5+ messages in thread
From: Hugo Mills @ 2009-02-24 23:02 UTC (permalink / raw)
To: linux-btrfs, linux-kernel; +Cc: Chris Mason
[-- Attachment #1: Type: text/plain, Size: 4676 bytes --]
This is essentially a repost of a mail I made last week, to which I
didn't get a reply.
I'm getting huge numbers of kernel warnings whilst using
btrfs. They're all "warn_slowpath", and all seem to be in
fs/btrfs/disk-io.c. I've included one typical example at the end of
this mail.
Kernel versions are 2.6.29-rc2, -rc4 and -rc6.
If I do lots of writes to my btrfs filesystem (e.g. video
encoding), I end up with a syslog in the tens-of-megabytes range. This
makes logcheck an unhappy bunny...
I don't know if this behaviour is expected, and everyone using
btrfs simply puts up with it for now, or if it's something unusual
that needs investigating. On the chance that it's the latter, I'm
reporting it here.
Hugo.
Feb 23 21:45:42 vlad kernel: ------------[ cut here ]------------
Feb 23 21:45:42 vlad kernel: WARNING: at fs/btrfs/disk-io.c:815 clean_tree_block+0x9d/0xbb [btrfs]()
Feb 23 21:45:42 vlad kernel: Hardware name: System Product Name
Feb 23 21:45:42 vlad kernel: Modules linked in: tun ext3 jbd btrfs zlib_deflate tcp_diag inet_diag kqemu cpufreq_userspace ipv6 nfsd nfs lockd nfs_acl auth_rpcgss sunrpc af_packet bridge stp llc xfs exportfs it87 hwmon_vid powernow_k8 sbp2 ieee1394 ide_generic ide_gd_mod ide_cd_mod pcspkr evdev k8temp hwmon i2c_viapro i2c_core button dm_mirror dm_region_hash dm_log dm_snapshot dm_mod raid1 md_mod usbhid usb_storage libusual sg sr_mod cdrom via82cxxx floppy via_rhine mii ehci_hcd uhci_hcd usbcore pata_via ide_pci_generic ide_core sd_mod thermal processor fan unix
Feb 23 21:45:42 vlad kernel: Pid: 27034, comm: hdparm Tainted: G W 2.6.29-rc4 #1
Feb 23 21:45:42 vlad kernel: Call Trace:
Feb 23 21:45:42 vlad kernel: [<ffffffff80228d7d>] warn_slowpath+0xd8/0x111
Feb 23 21:45:42 vlad kernel: [<ffffffff80312f11>] radix_tree_insert+0xd7/0x19f
Feb 23 21:45:42 vlad kernel: [<ffffffff8024d55d>] add_to_page_cache_locked+0x52/0x9e
Feb 23 21:45:42 vlad kernel: [<ffffffff8024d5e9>] add_to_page_cache_lru+0x40/0x58
Feb 23 21:45:42 vlad kernel: [<ffffffff8024dbd0>] find_or_create_page+0x62/0x88
Feb 23 21:45:42 vlad kernel: [<ffffffffa03f992a>] alloc_extent_buffer+0x268/0x2ec [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03e1b18>] clean_tree_block+0x9d/0xbb [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03d5eaf>] btrfs_init_new_buffer+0x99/0xf3 [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03d849e>] btrfs_alloc_free_block+0x83/0x8c [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03cb2f8>] __btrfs_cow_block+0x1ff/0x87e [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03cc125>] btrfs_cow_block+0x1e7/0x1f6 [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffff80251d9e>] __alloc_pages_internal+0xd2/0x3ec
Feb 23 21:45:42 vlad kernel: [<ffffffffa03d0915>] btrfs_search_slot+0x36f/0x99b [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03d14ee>] btrfs_insert_empty_items+0x7f/0x49d [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03d825d>] __btrfs_alloc_reserved_extent+0x19f/0x2bb [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03d83f0>] btrfs_alloc_extent+0x77/0xa2 [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03d847f>] btrfs_alloc_free_block+0x64/0x8c [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03cb2f8>] __btrfs_cow_block+0x1ff/0x87e [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03d7532>] finish_current_insert+0x514/0x528 [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03d7bf9>] del_pending_extents+0xa5/0x33d [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03cc125>] btrfs_cow_block+0x1e7/0x1f6 [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03e436d>] btrfs_commit_tree_roots+0x53/0x1ba [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffff80403a3e>] schedule_timeout+0xa1/0xbc
Feb 23 21:45:42 vlad kernel: [<ffffffffa03e55dd>] btrfs_commit_transaction+0x322/0x6e5 [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffff802385fb>] autoremove_wake_function+0x0/0x2e
Feb 23 21:45:42 vlad kernel: [<ffffffffa03e4809>] join_transaction+0x129/0x147 [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffffa03c8788>] btrfs_sync_fs+0x70/0x78 [btrfs]
Feb 23 21:45:42 vlad kernel: [<ffffffff8026f332>] sync_filesystems+0xa8/0xde
Feb 23 21:45:42 vlad kernel: [<ffffffff80287256>] do_sync+0x25/0x50
Feb 23 21:45:42 vlad kernel: [<ffffffff8028728f>] sys_sync+0xe/0x13
Feb 23 21:45:42 vlad kernel: [<ffffffff8020b25b>] system_call_fastpath+0x16/0x1b
Feb 23 21:45:42 vlad kernel: ---[ end trace a315082d564863a6 ]---
--
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk
--- Eighth Army Push Bottles Up Germans -- WWII newspaper ---
headline (possibly apocryphal)
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: btrfs: warn_slowpath in clean_tree_block and others
2009-02-24 23:02 btrfs: warn_slowpath in clean_tree_block and others Hugo Mills
@ 2009-02-25 4:22 ` Mitch Harder (aka DontPanic)
2009-02-25 6:26 ` Lee Trager
2009-02-25 18:36 ` Chris Mason
1 sibling, 1 reply; 5+ messages in thread
From: Mitch Harder (aka DontPanic) @ 2009-02-25 4:22 UTC (permalink / raw)
To: Hugo Mills, linux-btrfs, linux-kernel, Chris Mason
I have also been getting similar warnings filling up my logs.
However, in my case, I have been experimenting with back-porting btrfs
to a 2.6.28 kernel. So I've been waiting for the back-porting efforts
to get a little further along.
But I thought I'd respond in case this information helps.
Here's an example of the warnings I've been seeing:
[80577.151167] ------------[ cut here ]------------
[80577.151169] WARNING: at
/var/tmp/portage/sys-fs/btrfs-9998/work/btrfs-9998/disk-io.c:860
clean_tree_block+0xa4/0xb0 [btrfs]()
[80577.151172] Modules linked in: btrfs snd_pcm_oss snd_mixer_oss
snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device
ipv6 ppdev snd_intel8x0 snd_ac97_codec parport_pc nvidia(P) ac97_bus
snd_pcm snd_timer ohci_hcd ssb shpchp pci_hotplug pcmcia i2c_nforce2
snd forcedeth sr_mod pcspkr parport i2c_core snd_page_alloc nvidia_agp
sl811_hcd pcmcia_core uhci_hcd ehci_hcd
[80577.151190] Pid: 11503, comm: cp Tainted: P W 2.6.28-sabayon-r10 #1
[80577.151192] Call Trace:
[80577.151195] [<c011e77f>] warn_on_slowpath+0x5f/0x90
[80577.151203] [<c043c427>] rb_insert_color+0x77/0xe0
[80577.151221] [<f8c28e9e>] alloc_extent_buffer+0x1fe/0x300 [btrfs]
[80577.151238] [<f8c08d54>] clean_tree_block+0xa4/0xb0 [btrfs]
[80577.151253] [<f8bf665d>] btrfs_init_new_buffer+0x7d/0x130 [btrfs]
[80577.151269] [<f8bfb6f4>] btrfs_alloc_free_block+0x104/0x110 [btrfs]
[80577.151285] [<f8bef3da>] __btrfs_cow_block+0x22a/0x8b0 [btrfs]
[80577.151300] [<f8bed212>] generic_bin_search+0x162/0x1c0 [btrfs]
[80577.151315] [<f8bf00e6>] btrfs_cow_block+0x156/0x200 [btrfs]
[80577.151330] [<f8bf3267>] btrfs_search_slot+0x1a7/0x910 [btrfs]
[80577.151333] [<c01230e7>] irq_exit+0x27/0x60
[80577.151336] [<c01052cb>] do_IRQ+0x6b/0x80
[80577.151354] [<f8c24a55>] read_extent_buffer+0xd5/0x170 [btrfs]
[80577.151369] [<f8bf3f7d>] btrfs_insert_empty_items+0x6d/0x410 [btrfs]
[80577.151385] [<f8bf8f4f>] btrfs_find_block_group+0xff/0x1a0 [btrfs]
[80577.151402] [<f8c0fa1d>] btrfs_new_inode+0x18d/0x360 [btrfs]
[80577.151420] [<f8c135a9>] btrfs_create+0x189/0x2a0 [btrfs]
[80577.151423] [<c04162d9>] security_capable+0x9/0x10
[80577.151427] [<c0197f3d>] vfs_create+0xcd/0x160
[80577.151430] [<c019ad6f>] do_filp_open+0x5af/0x7d0
[80577.151433] [<c01932e9>] cp_new_stat64+0xf9/0x110
[80577.151436] [<c018e40e>] do_sys_open+0x4e/0xe0
[80577.151439] [<c018e51c>] sys_open+0x2c/0x40
[80577.151442] [<c0103165>] sysenter_do_call+0x12/0x21
[80577.151444] ---[ end trace 79cdc48bc88dedf7 ]---
On Tue, Feb 24, 2009 at 5:02 PM, Hugo Mills <hugo-lkml@carfax.org.uk> wrote:
> This is essentially a repost of a mail I made last week, to which I
> didn't get a reply.
>
> I'm getting huge numbers of kernel warnings whilst using
> btrfs. They're all "warn_slowpath", and all seem to be in
> fs/btrfs/disk-io.c. I've included one typical example at the end of
> this mail.
>
> Kernel versions are 2.6.29-rc2, -rc4 and -rc6.
>
> If I do lots of writes to my btrfs filesystem (e.g. video
> encoding), I end up with a syslog in the tens-of-megabytes range. This
> makes logcheck an unhappy bunny...
>
> I don't know if this behaviour is expected, and everyone using
> btrfs simply puts up with it for now, or if it's something unusual
> that needs investigating. On the chance that it's the latter, I'm
> reporting it here.
>
> Hugo.
>
> Feb 23 21:45:42 vlad kernel: ------------[ cut here ]------------
> Feb 23 21:45:42 vlad kernel: WARNING: at fs/btrfs/disk-io.c:815 clean_tree_block+0x9d/0xbb [btrfs]()
> Feb 23 21:45:42 vlad kernel: Hardware name: System Product Name
> Feb 23 21:45:42 vlad kernel: Modules linked in: tun ext3 jbd btrfs zlib_deflate tcp_diag inet_diag kqemu cpufreq_userspace ipv6 nfsd nfs lockd nfs_acl auth_rpcgss sunrpc af_packet bridge stp llc xfs exportfs it87 hwmon_vid powernow_k8 sbp2 ieee1394 ide_generic ide_gd_mod ide_cd_mod pcspkr evdev k8temp hwmon i2c_viapro i2c_core button dm_mirror dm_region_hash dm_log dm_snapshot dm_mod raid1 md_mod usbhid usb_storage libusual sg sr_mod cdrom via82cxxx floppy via_rhine mii ehci_hcd uhci_hcd usbcore pata_via ide_pci_generic ide_core sd_mod thermal processor fan unix
> Feb 23 21:45:42 vlad kernel: Pid: 27034, comm: hdparm Tainted: G W 2.6.29-rc4 #1
> Feb 23 21:45:42 vlad kernel: Call Trace:
> Feb 23 21:45:42 vlad kernel: [<ffffffff80228d7d>] warn_slowpath+0xd8/0x111
> Feb 23 21:45:42 vlad kernel: [<ffffffff80312f11>] radix_tree_insert+0xd7/0x19f
> Feb 23 21:45:42 vlad kernel: [<ffffffff8024d55d>] add_to_page_cache_locked+0x52/0x9e
> Feb 23 21:45:42 vlad kernel: [<ffffffff8024d5e9>] add_to_page_cache_lru+0x40/0x58
> Feb 23 21:45:42 vlad kernel: [<ffffffff8024dbd0>] find_or_create_page+0x62/0x88
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03f992a>] alloc_extent_buffer+0x268/0x2ec [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03e1b18>] clean_tree_block+0x9d/0xbb [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d5eaf>] btrfs_init_new_buffer+0x99/0xf3 [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d849e>] btrfs_alloc_free_block+0x83/0x8c [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03cb2f8>] __btrfs_cow_block+0x1ff/0x87e [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03cc125>] btrfs_cow_block+0x1e7/0x1f6 [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffff80251d9e>] __alloc_pages_internal+0xd2/0x3ec
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d0915>] btrfs_search_slot+0x36f/0x99b [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d14ee>] btrfs_insert_empty_items+0x7f/0x49d [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d825d>] __btrfs_alloc_reserved_extent+0x19f/0x2bb [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d83f0>] btrfs_alloc_extent+0x77/0xa2 [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d847f>] btrfs_alloc_free_block+0x64/0x8c [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03cb2f8>] __btrfs_cow_block+0x1ff/0x87e [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d7532>] finish_current_insert+0x514/0x528 [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d7bf9>] del_pending_extents+0xa5/0x33d [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03cc125>] btrfs_cow_block+0x1e7/0x1f6 [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03e436d>] btrfs_commit_tree_roots+0x53/0x1ba [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffff80403a3e>] schedule_timeout+0xa1/0xbc
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03e55dd>] btrfs_commit_transaction+0x322/0x6e5 [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffff802385fb>] autoremove_wake_function+0x0/0x2e
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03e4809>] join_transaction+0x129/0x147 [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffffa03c8788>] btrfs_sync_fs+0x70/0x78 [btrfs]
> Feb 23 21:45:42 vlad kernel: [<ffffffff8026f332>] sync_filesystems+0xa8/0xde
> Feb 23 21:45:42 vlad kernel: [<ffffffff80287256>] do_sync+0x25/0x50
> Feb 23 21:45:42 vlad kernel: [<ffffffff8028728f>] sys_sync+0xe/0x13
> Feb 23 21:45:42 vlad kernel: [<ffffffff8020b25b>] system_call_fastpath+0x16/0x1b
> Feb 23 21:45:42 vlad kernel: ---[ end trace a315082d564863a6 ]---
>
>
> --
> === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
> PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk
> --- Eighth Army Push Bottles Up Germans -- WWII newspaper ---
> headline (possibly apocryphal)
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.9 (GNU/Linux)
>
> iD8DBQFJpHyZIKyzvlFcI40RApVLAJoDrHaA+9cebRyJDm+vhGqgEQGiMACguCV+
> znRCpat0ajek+ivXViQX5rg=
> =GsHM
> -----END PGP SIGNATURE-----
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: btrfs: warn_slowpath in clean_tree_block and others
2009-02-25 4:22 ` Mitch Harder (aka DontPanic)
@ 2009-02-25 6:26 ` Lee Trager
0 siblings, 0 replies; 5+ messages in thread
From: Lee Trager @ 2009-02-25 6:26 UTC (permalink / raw)
To: Mitch Harder (aka DontPanic)
Cc: Hugo Mills, linux-btrfs, linux-kernel, Chris Mason
Mitch, I haven't seen any problems using BTRFS and my patch on 2.6.28 or
2.6.27, what are you doing to cause this error? Are you using the latest
sources from btrfs-unstable?
Lee
Mitch Harder (aka DontPanic) wrote:
> I have also been getting similar warnings filling up my logs.
>
> However, in my case, I have been experimenting with back-porting btrfs
> to a 2.6.28 kernel. So I've been waiting for the back-porting efforts
> to get a little further along.
>
> But I thought I'd respond in case this information helps.
>
> Here's an example of the warnings I've been seeing:
>
> [80577.151167] ------------[ cut here ]------------
> [80577.151169] WARNING: at
> /var/tmp/portage/sys-fs/btrfs-9998/work/btrfs-9998/disk-io.c:860
> clean_tree_block+0xa4/0xb0 [btrfs]()
> [80577.151172] Modules linked in: btrfs snd_pcm_oss snd_mixer_oss
> snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device
> ipv6 ppdev snd_intel8x0 snd_ac97_codec parport_pc nvidia(P) ac97_bus
> snd_pcm snd_timer ohci_hcd ssb shpchp pci_hotplug pcmcia i2c_nforce2
> snd forcedeth sr_mod pcspkr parport i2c_core snd_page_alloc nvidia_agp
> sl811_hcd pcmcia_core uhci_hcd ehci_hcd
> [80577.151190] Pid: 11503, comm: cp Tainted: P W 2.6.28-sabayon-r10 #1
> [80577.151192] Call Trace:
> [80577.151195] [<c011e77f>] warn_on_slowpath+0x5f/0x90
> [80577.151203] [<c043c427>] rb_insert_color+0x77/0xe0
> [80577.151221] [<f8c28e9e>] alloc_extent_buffer+0x1fe/0x300 [btrfs]
> [80577.151238] [<f8c08d54>] clean_tree_block+0xa4/0xb0 [btrfs]
> [80577.151253] [<f8bf665d>] btrfs_init_new_buffer+0x7d/0x130 [btrfs]
> [80577.151269] [<f8bfb6f4>] btrfs_alloc_free_block+0x104/0x110 [btrfs]
> [80577.151285] [<f8bef3da>] __btrfs_cow_block+0x22a/0x8b0 [btrfs]
> [80577.151300] [<f8bed212>] generic_bin_search+0x162/0x1c0 [btrfs]
> [80577.151315] [<f8bf00e6>] btrfs_cow_block+0x156/0x200 [btrfs]
> [80577.151330] [<f8bf3267>] btrfs_search_slot+0x1a7/0x910 [btrfs]
> [80577.151333] [<c01230e7>] irq_exit+0x27/0x60
> [80577.151336] [<c01052cb>] do_IRQ+0x6b/0x80
> [80577.151354] [<f8c24a55>] read_extent_buffer+0xd5/0x170 [btrfs]
> [80577.151369] [<f8bf3f7d>] btrfs_insert_empty_items+0x6d/0x410 [btrfs]
> [80577.151385] [<f8bf8f4f>] btrfs_find_block_group+0xff/0x1a0 [btrfs]
> [80577.151402] [<f8c0fa1d>] btrfs_new_inode+0x18d/0x360 [btrfs]
> [80577.151420] [<f8c135a9>] btrfs_create+0x189/0x2a0 [btrfs]
> [80577.151423] [<c04162d9>] security_capable+0x9/0x10
> [80577.151427] [<c0197f3d>] vfs_create+0xcd/0x160
> [80577.151430] [<c019ad6f>] do_filp_open+0x5af/0x7d0
> [80577.151433] [<c01932e9>] cp_new_stat64+0xf9/0x110
> [80577.151436] [<c018e40e>] do_sys_open+0x4e/0xe0
> [80577.151439] [<c018e51c>] sys_open+0x2c/0x40
> [80577.151442] [<c0103165>] sysenter_do_call+0x12/0x21
> [80577.151444] ---[ end trace 79cdc48bc88dedf7 ]---
>
>
> On Tue, Feb 24, 2009 at 5:02 PM, Hugo Mills <hugo-lkml@carfax.org.uk> wrote:
>
>> This is essentially a repost of a mail I made last week, to which I
>> didn't get a reply.
>>
>> I'm getting huge numbers of kernel warnings whilst using
>> btrfs. They're all "warn_slowpath", and all seem to be in
>> fs/btrfs/disk-io.c. I've included one typical example at the end of
>> this mail.
>>
>> Kernel versions are 2.6.29-rc2, -rc4 and -rc6.
>>
>> If I do lots of writes to my btrfs filesystem (e.g. video
>> encoding), I end up with a syslog in the tens-of-megabytes range. This
>> makes logcheck an unhappy bunny...
>>
>> I don't know if this behaviour is expected, and everyone using
>> btrfs simply puts up with it for now, or if it's something unusual
>> that needs investigating. On the chance that it's the latter, I'm
>> reporting it here.
>>
>> Hugo.
>>
>> Feb 23 21:45:42 vlad kernel: ------------[ cut here ]------------
>> Feb 23 21:45:42 vlad kernel: WARNING: at fs/btrfs/disk-io.c:815 clean_tree_block+0x9d/0xbb [btrfs]()
>> Feb 23 21:45:42 vlad kernel: Hardware name: System Product Name
>> Feb 23 21:45:42 vlad kernel: Modules linked in: tun ext3 jbd btrfs zlib_deflate tcp_diag inet_diag kqemu cpufreq_userspace ipv6 nfsd nfs lockd nfs_acl auth_rpcgss sunrpc af_packet bridge stp llc xfs exportfs it87 hwmon_vid powernow_k8 sbp2 ieee1394 ide_generic ide_gd_mod ide_cd_mod pcspkr evdev k8temp hwmon i2c_viapro i2c_core button dm_mirror dm_region_hash dm_log dm_snapshot dm_mod raid1 md_mod usbhid usb_storage libusual sg sr_mod cdrom via82cxxx floppy via_rhine mii ehci_hcd uhci_hcd usbcore pata_via ide_pci_generic ide_core sd_mod thermal processor fan unix
>> Feb 23 21:45:42 vlad kernel: Pid: 27034, comm: hdparm Tainted: G W 2.6.29-rc4 #1
>> Feb 23 21:45:42 vlad kernel: Call Trace:
>> Feb 23 21:45:42 vlad kernel: [<ffffffff80228d7d>] warn_slowpath+0xd8/0x111
>> Feb 23 21:45:42 vlad kernel: [<ffffffff80312f11>] radix_tree_insert+0xd7/0x19f
>> Feb 23 21:45:42 vlad kernel: [<ffffffff8024d55d>] add_to_page_cache_locked+0x52/0x9e
>> Feb 23 21:45:42 vlad kernel: [<ffffffff8024d5e9>] add_to_page_cache_lru+0x40/0x58
>> Feb 23 21:45:42 vlad kernel: [<ffffffff8024dbd0>] find_or_create_page+0x62/0x88
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03f992a>] alloc_extent_buffer+0x268/0x2ec [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03e1b18>] clean_tree_block+0x9d/0xbb [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d5eaf>] btrfs_init_new_buffer+0x99/0xf3 [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d849e>] btrfs_alloc_free_block+0x83/0x8c [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03cb2f8>] __btrfs_cow_block+0x1ff/0x87e [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03cc125>] btrfs_cow_block+0x1e7/0x1f6 [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffff80251d9e>] __alloc_pages_internal+0xd2/0x3ec
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d0915>] btrfs_search_slot+0x36f/0x99b [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d14ee>] btrfs_insert_empty_items+0x7f/0x49d [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d825d>] __btrfs_alloc_reserved_extent+0x19f/0x2bb [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d83f0>] btrfs_alloc_extent+0x77/0xa2 [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d847f>] btrfs_alloc_free_block+0x64/0x8c [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03cb2f8>] __btrfs_cow_block+0x1ff/0x87e [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d7532>] finish_current_insert+0x514/0x528 [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03d7bf9>] del_pending_extents+0xa5/0x33d [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03cc125>] btrfs_cow_block+0x1e7/0x1f6 [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03e436d>] btrfs_commit_tree_roots+0x53/0x1ba [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffff80403a3e>] schedule_timeout+0xa1/0xbc
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03e55dd>] btrfs_commit_transaction+0x322/0x6e5 [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffff802385fb>] autoremove_wake_function+0x0/0x2e
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03e4809>] join_transaction+0x129/0x147 [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffffa03c8788>] btrfs_sync_fs+0x70/0x78 [btrfs]
>> Feb 23 21:45:42 vlad kernel: [<ffffffff8026f332>] sync_filesystems+0xa8/0xde
>> Feb 23 21:45:42 vlad kernel: [<ffffffff80287256>] do_sync+0x25/0x50
>> Feb 23 21:45:42 vlad kernel: [<ffffffff8028728f>] sys_sync+0xe/0x13
>> Feb 23 21:45:42 vlad kernel: [<ffffffff8020b25b>] system_call_fastpath+0x16/0x1b
>> Feb 23 21:45:42 vlad kernel: ---[ end trace a315082d564863a6 ]---
>>
>>
>> --
>> === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
>> PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk
>> --- Eighth Army Push Bottles Up Germans -- WWII newspaper ---
>> headline (possibly apocryphal)
>>
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG v1.4.9 (GNU/Linux)
>>
>> iD8DBQFJpHyZIKyzvlFcI40RApVLAJoDrHaA+9cebRyJDm+vhGqgEQGiMACguCV+
>> znRCpat0ajek+ivXViQX5rg=
>> =GsHM
>> -----END PGP SIGNATURE-----
>>
>>
>>
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: btrfs: warn_slowpath in clean_tree_block and others
2009-02-24 23:02 btrfs: warn_slowpath in clean_tree_block and others Hugo Mills
2009-02-25 4:22 ` Mitch Harder (aka DontPanic)
@ 2009-02-25 18:36 ` Chris Mason
2009-02-25 18:54 ` Hugo Mills
1 sibling, 1 reply; 5+ messages in thread
From: Chris Mason @ 2009-02-25 18:36 UTC (permalink / raw)
To: Hugo Mills; +Cc: linux-btrfs, linux-kernel
On Tue, 2009-02-24 at 23:02 +0000, Hugo Mills wrote:
> This is essentially a repost of a mail I made last week, to which I
> didn't get a reply.
>
Sorry I missed replying to this one last week, thanks for resending.
> I'm getting huge numbers of kernel warnings whilst using
> btrfs. They're all "warn_slowpath", and all seem to be in
> fs/btrfs/disk-io.c. I've included one typical example at the end of
> this mail.
>
> Kernel versions are 2.6.29-rc2, -rc4 and -rc6.
>
The warnings look like i386, exactly what hardware is this? Is your
kernel compiled for SMP or UP?
The warning you're getting is that clean_tree_block expects this block
to be locked, and giving out a warning because it is showing up as
unlocked.
So, hopefully you're on a UP kernel and my test for a locked spinlock is
broken in that config.
-chris
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: btrfs: warn_slowpath in clean_tree_block and others
2009-02-25 18:36 ` Chris Mason
@ 2009-02-25 18:54 ` Hugo Mills
0 siblings, 0 replies; 5+ messages in thread
From: Hugo Mills @ 2009-02-25 18:54 UTC (permalink / raw)
To: Chris Mason; +Cc: Hugo Mills, linux-btrfs, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 1567 bytes --]
On Wed, Feb 25, 2009 at 01:36:26PM -0500, Chris Mason wrote:
> On Tue, 2009-02-24 at 23:02 +0000, Hugo Mills wrote:
> > This is essentially a repost of a mail I made last week, to which I
> > didn't get a reply.
>
> Sorry I missed replying to this one last week, thanks for resending.
Not a problem. I know things go astray sometimes.
> > I'm getting huge numbers of kernel warnings whilst using
> > btrfs. They're all "warn_slowpath", and all seem to be in
> > fs/btrfs/disk-io.c. I've included one typical example at the end of
> > this mail.
> >
> > Kernel versions are 2.6.29-rc2, -rc4 and -rc6.
> >
>
> The warnings look like i386, exactly what hardware is this? Is your
> kernel compiled for SMP or UP?
amd64 and a UP kernel:
hrm@vlad:linux-2.6 $ uname -a
Linux vlad 2.6.29-rc6 #1 Mon Feb 23 19:53:22 GMT 2009 x86_64 GNU/Linux
Hardware is an original-series Turion 64 (i.e. one core) in a
Socket 745 desktop motherboard. The btrfs filesystem is in
LVM-on-RAID1 in an eSATA port-multiplier storage rack.
> The warning you're getting is that clean_tree_block expects this block
> to be locked, and giving out a warning because it is showing up as
> unlocked.
>
> So, hopefully you're on a UP kernel and my test for a locked spinlock is
> broken in that config.
OK. I can try patches if necessary.
Hugo.
--
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk
--- UNIX: British manufacturer of modular shelving units. ---
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^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2009-02-25 19:19 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-02-24 23:02 btrfs: warn_slowpath in clean_tree_block and others Hugo Mills
2009-02-25 4:22 ` Mitch Harder (aka DontPanic)
2009-02-25 6:26 ` Lee Trager
2009-02-25 18:36 ` Chris Mason
2009-02-25 18:54 ` Hugo Mills
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