On Wed, Feb 25, 2009 at 11:05:58AM -0500, Lee Trager wrote: > But what are you doing to the filesystem when it crashes? How did you > mount it?
In my case, it's mounted with this fstab entry:
/dev/media/scratch /media/vlad/video/video btrfs noatime,nosuid,nodev
0 0
and I can trigger hundreds (literally) of these backtraces with a
single "touch /media/vlad/video/video/foo". If I encode a video to the
FS, the backtraces come in bursts at intervals of, say, 20 seconds
(it's not perfectly regular).
Hugo.
> On Wed, Feb 25, 2009 at 08:03:01AM -0600, Mitch Harder (aka DontPanic) wrote:
> > I've been creating a local git repository of full btrfs-unstable sources.
> >
> > I'll create a new branch off the master branch, and apply the patch
> > supplied in the Feb. 11 message to the M/L.
> >
> > I then create a kernel module based on the results in /fs/btrfs/
> >
> > I have also tried replicating the experimental branch, and merging the
> > patch into that branch, but I get the same results.
> >
> > On Wed, Feb 25, 2009 at 12:26 AM, Lee Trager <l...@cs.drexel.edu> wrote:
> > > 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-l...@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: h...@... 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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