* Can't umount a read-only FS ?
@ 2012-08-15 17:28 Olivier Bonvalet
2012-08-15 17:32 ` Olivier Bonvalet
2012-08-15 22:29 ` [solved] " Olivier Bonvalet
0 siblings, 2 replies; 5+ messages in thread
From: Olivier Bonvalet @ 2012-08-15 17:28 UTC (permalink / raw)
To: linux-btrfs
Hi,
I have a strange problem with a btrfs partition : after an error, btrfs was forced readonly.
So I try to umount it, to launch btrfsck, but it doesn't work :
root! sofia:~# umount /backup/
root! sofia:~# btrfsck /dev/vg-sofia/backup
/dev/vg-sofia/backup is currently mounted. Aborting.
root! sofia:~# umount /backup/
umount: /backup/: not mounted
root! sofia:~# btrfsck /dev/vg-sofia/backup
/dev/vg-sofia/backup is currently mounted. Aborting.
root! sofia:~#
And I can't remount it :
root! sofia:~# mount /backup/
mount: /dev/mapper/vg--sofia-backup already mounted or /backup busy
Or access to the content :
root! sofia:~# ls /backup/
root! sofia:~#
It's on a v3.4.7 kernel, with btrfs-tools version 0.19+20120328-7 (from Debian unstable).
What should I do ? Reboot ?
Thanks,
Olivier
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Can't umount a read-only FS ?
2012-08-15 17:28 Can't umount a read-only FS ? Olivier Bonvalet
@ 2012-08-15 17:32 ` Olivier Bonvalet
2012-08-15 17:43 ` David Sterba
2012-08-15 22:29 ` [solved] " Olivier Bonvalet
1 sibling, 1 reply; 5+ messages in thread
From: Olivier Bonvalet @ 2012-08-15 17:32 UTC (permalink / raw)
To: linux-btrfs
On 15/08/2012 19:28, Olivier Bonvalet wrote:
> Hi,
>
> I have a strange problem with a btrfs partition : after an error, btrfs was forced readonly.
>
> So I try to umount it, to launch btrfsck, but it doesn't work :
>
I forgot, it was set readonly after that error :
Aug 15 09:44:33 sofia kernel: [29840.510826] ------------[ cut here ]------------
Aug 15 09:44:33 sofia kernel: [29840.510850] WARNING: at fs/btrfs/super.c:219 __btrfs_abort_transaction+0x3a/0x95 [btrfs]()
Aug 15 09:44:33 sofia kernel: [29840.510858] btrfs: Transaction aborted
Aug 15 09:44:33 sofia kernel: [29840.510860] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
Aug 15 09:44:33 sofia kernel: [29840.510872] Pid: 26524, comm: btrfs Tainted: G C 2.6.44.7-dae-xen #2
Aug 15 09:44:33 sofia kernel: [29840.510879] Call Trace:
Aug 15 09:44:33 sofia kernel: [29840.510893] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
Aug 15 09:44:33 sofia kernel: [29840.510901] [<ffffffff8103c87b>] ? warn_slowpath_fmt+0x45/0x4a
Aug 15 09:44:33 sofia kernel: [29840.510924] [<ffffffffa0077346>] ? btrfs_alloc_delayed_item+0x13/0x3b [btrfs]
Aug 15 09:44:33 sofia kernel: [29840.510941] [<ffffffffa00203d2>] ? __btrfs_abort_transaction+0x3a/0x95 [btrfs]
Aug 15 09:44:33 sofia kernel: [29840.510964] [<ffffffffa0042c80>] ? btrfs_unlink_subvol+0x1cf/0x255 [btrfs]
Aug 15 09:44:33 sofia kernel: [29840.510987] [<ffffffffa0062178>] ? btrfs_ioctl_snap_destroy+0x2e0/0x42c [btrfs]
Aug 15 09:44:33 sofia kernel: [29840.511010] [<ffffffffa0064f8c>] ? btrfs_ioctl+0x4f6/0xfce [btrfs]
Aug 15 09:44:33 sofia kernel: [29840.511022] [<ffffffff81021ffa>] ? do_page_fault+0x274/0x2f2
Aug 15 09:44:33 sofia kernel: [29840.511031] [<ffffffff810d39ca>] ? vfs_ioctl+0x1e/0x31
Aug 15 09:44:33 sofia kernel: [29840.511039] [<ffffffff810d41ba>] ? do_vfs_ioctl+0x3bd/0x3ff
Aug 15 09:44:33 sofia kernel: [29840.511046] [<ffffffff810d4238>] ? sys_ioctl+0x3c/0x60
Aug 15 09:44:33 sofia kernel: [29840.511055] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
Aug 15 09:44:33 sofia kernel: [29840.511062] ---[ end trace 17eb064ed1556a08 ]---
Aug 15 09:44:33 sofia kernel: [29840.511071] BTRFS error (device dm-1) in btrfs_unlink_subvol:3098: error 28
Aug 15 09:44:33 sofia kernel: [29840.511077] btrfs is forced readonly
Aug 15 09:44:33 sofia kernel: [29840.511083] BTRFS error (device dm-1) in btrfs_ioctl_snap_destroy:2026: error 28
then in logs I have this warnings :
Aug 15 09:51:42 sofia kernel: [30269.723855] ------------[ cut here ]------------
Aug 15 09:51:42 sofia kernel: [30269.723893] WARNING: at fs/btrfs/inode.c:6954 btrfs_destroy_inode+0x64/0x26c [btrfs]()
Aug 15 09:51:42 sofia kernel: [30269.723905] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
Aug 15 09:51:42 sofia kernel: [30269.723920] Pid: 27751, comm: ssh Tainted: G WC 2.6.44.7-dae-xen #2
Aug 15 09:51:42 sofia kernel: [30269.723928] Call Trace:
Aug 15 09:51:42 sofia kernel: [30269.723939] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
Aug 15 09:51:42 sofia kernel: [30269.723975] [<ffffffffa004678f>] ? btrfs_destroy_inode+0x64/0x26c [btrfs]
Aug 15 09:51:42 sofia kernel: [30269.724010] [<ffffffffa004672b>] ? btrfs_alloc_inode+0x1d9/0x1d9 [btrfs]
Aug 15 09:51:42 sofia kernel: [30269.724052] [<ffffffff810d9943>] ? dispose_list+0x27/0x31
Aug 15 09:51:42 sofia kernel: [30269.724066] [<ffffffff810da65e>] ? prune_icache_sb+0x2a7/0x2c2
Aug 15 09:51:42 sofia kernel: [30269.724086] [<ffffffff810c99e1>] ? prune_super+0xcb/0x138
Aug 15 09:51:42 sofia kernel: [30269.724104] [<ffffffff8110276f>] ? do_raw_spin_unlock.constprop.9+0xc/0xf
Aug 15 09:51:42 sofia kernel: [30269.724124] [<ffffffff8109b7d4>] ? shrink_slab+0x120/0x19d
Aug 15 09:51:42 sofia kernel: [30269.724139] [<ffffffff8109d46f>] ? do_try_to_free_pages+0x251/0x3ba
Aug 15 09:51:42 sofia kernel: [30269.724156] [<ffffffff8109d648>] ? try_to_free_pages+0x70/0x75
Aug 15 09:51:42 sofia kernel: [30269.724172] [<ffffffff81097368>] ? __alloc_pages_nodemask+0x4bf/0x773
Aug 15 09:51:42 sofia kernel: [30269.724191] [<ffffffff812fff66>] ? kmalloc_large_node+0x4f/0x7f
Aug 15 09:51:42 sofia kernel: [30269.724204] [<ffffffff8126a4e1>] ? __alloc_skb+0x6b/0x135
Aug 15 09:51:42 sofia kernel: [30269.724218] [<ffffffff81269103>] ? sock_alloc_send_pskb+0xc7/0x2b5
Aug 15 09:51:42 sofia kernel: [30269.724234] [<ffffffff81005e67>] ? get_phys_to_machine+0x12/0x5d
Aug 15 09:51:42 sofia kernel: [30269.724251] [<ffffffff81003b2a>] ? mfn_to_pfn.part.24+0x52/0x77
Aug 15 09:51:42 sofia kernel: [30269.724271] [<ffffffff812db414>] ? unix_stream_sendmsg+0x113/0x2b8
Aug 15 09:51:42 sofia kernel: [30269.724289] [<ffffffff8109557b>] ? get_pageblock_flags_group+0x30/0x64
Aug 15 09:51:42 sofia kernel: [30269.724302] [<ffffffff81263de0>] ? sock_aio_write+0xa3/0xbf
Aug 15 09:51:42 sofia kernel: [30269.724316] [<ffffffff81099e12>] ? release_pages+0x120/0x12f
Aug 15 09:51:42 sofia kernel: [30269.724335] [<ffffffff810c6ec2>] ? do_sync_write+0xae/0xe6
Aug 15 09:51:42 sofia kernel: [30269.724347] [<ffffffff810bf739>] ? kmem_cache_free+0x11/0x69
Aug 15 09:51:42 sofia kernel: [30269.724361] [<ffffffff810aaed7>] ? remove_vma+0x5c/0x63
Aug 15 09:51:42 sofia kernel: [30269.724371] [<ffffffff810ac047>] ? do_munmap+0x2a7/0x2cf
Aug 15 09:51:42 sofia kernel: [30269.724385] [<ffffffff810c7634>] ? vfs_write+0x9d/0xf8
Aug 15 09:51:42 sofia kernel: [30269.724396] [<ffffffff810c782f>] ? sys_write+0x3e/0x6d
Aug 15 09:51:42 sofia kernel: [30269.724409] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
Aug 15 09:51:42 sofia kernel: [30269.724421] ---[ end trace 17eb064ed1556a09 ]---
Aug 15 09:51:42 sofia kernel: [30269.724428] ------------[ cut here ]------------
Aug 15 09:51:42 sofia kernel: [30269.724456] WARNING: at fs/btrfs/inode.c:6955 btrfs_destroy_inode+0x7b/0x26c [btrfs]()
Aug 15 09:51:42 sofia kernel: [30269.724470] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
Aug 15 09:51:42 sofia kernel: [30269.724487] Pid: 27751, comm: ssh Tainted: G WC 2.6.44.7-dae-xen #2
Aug 15 09:51:42 sofia kernel: [30269.724499] Call Trace:
Aug 15 09:51:42 sofia kernel: [30269.724508] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
Aug 15 09:51:42 sofia kernel: [30269.724536] [<ffffffffa00467a6>] ? btrfs_destroy_inode+0x7b/0x26c [btrfs]
Aug 15 09:51:42 sofia kernel: [30269.724569] [<ffffffffa004672b>] ? btrfs_alloc_inode+0x1d9/0x1d9 [btrfs]
Aug 15 09:51:42 sofia kernel: [30269.724582] [<ffffffff810d9943>] ? dispose_list+0x27/0x31
Aug 15 09:51:42 sofia kernel: [30269.724591] [<ffffffff810da65e>] ? prune_icache_sb+0x2a7/0x2c2
Aug 15 09:51:42 sofia kernel: [30269.724602] [<ffffffff810c99e1>] ? prune_super+0xcb/0x138
Aug 15 09:51:42 sofia kernel: [30269.724611] [<ffffffff8110276f>] ? do_raw_spin_unlock.constprop.9+0xc/0xf
Aug 15 09:51:42 sofia kernel: [30269.724622] [<ffffffff8109b7d4>] ? shrink_slab+0x120/0x19d
Aug 15 09:51:42 sofia kernel: [30269.724632] [<ffffffff8109d46f>] ? do_try_to_free_pages+0x251/0x3ba
Aug 15 09:51:42 sofia kernel: [30269.724643] [<ffffffff8109d648>] ? try_to_free_pages+0x70/0x75
Aug 15 09:51:42 sofia kernel: [30269.724663] [<ffffffff81097368>] ? __alloc_pages_nodemask+0x4bf/0x773
Aug 15 09:51:42 sofia kernel: [30269.724734] [<ffffffff812fff66>] ? kmalloc_large_node+0x4f/0x7f
Aug 15 09:51:42 sofia kernel: [30269.724747] [<ffffffff8126a4e1>] ? __alloc_skb+0x6b/0x135
Aug 15 09:51:42 sofia kernel: [30269.724758] [<ffffffff81269103>] ? sock_alloc_send_pskb+0xc7/0x2b5
Aug 15 09:51:42 sofia kernel: [30269.724775] [<ffffffff81005e67>] ? get_phys_to_machine+0x12/0x5d
Aug 15 09:51:42 sofia kernel: [30269.724786] [<ffffffff81003b2a>] ? mfn_to_pfn.part.24+0x52/0x77
Aug 15 09:51:42 sofia kernel: [30269.724797] [<ffffffff812db414>] ? unix_stream_sendmsg+0x113/0x2b8
Aug 15 09:51:42 sofia kernel: [30269.724805] [<ffffffff8109557b>] ? get_pageblock_flags_group+0x30/0x64
Aug 15 09:51:42 sofia kernel: [30269.724813] [<ffffffff81263de0>] ? sock_aio_write+0xa3/0xbf
Aug 15 09:51:42 sofia kernel: [30269.724819] [<ffffffff81099e12>] ? release_pages+0x120/0x12f
Aug 15 09:51:42 sofia kernel: [30269.724827] [<ffffffff810c6ec2>] ? do_sync_write+0xae/0xe6
Aug 15 09:51:42 sofia kernel: [30269.724834] [<ffffffff810bf739>] ? kmem_cache_free+0x11/0x69
Aug 15 09:51:42 sofia kernel: [30269.724840] [<ffffffff810aaed7>] ? remove_vma+0x5c/0x63
Aug 15 09:51:42 sofia kernel: [30269.724846] [<ffffffff810ac047>] ? do_munmap+0x2a7/0x2cf
Aug 15 09:51:42 sofia kernel: [30269.724852] [<ffffffff810c7634>] ? vfs_write+0x9d/0xf8
Aug 15 09:51:42 sofia kernel: [30269.724859] [<ffffffff810c782f>] ? sys_write+0x3e/0x6d
Aug 15 09:51:42 sofia kernel: [30269.724865] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
Aug 15 09:51:42 sofia kernel: [30269.724871] ---[ end trace 17eb064ed1556a0a ]---
Aug 15 09:51:42 sofia kernel: [30269.724876] ------------[ cut here ]------------
Aug 15 09:51:42 sofia kernel: [30269.724896] WARNING: at fs/btrfs/inode.c:6957 btrfs_destroy_inode+0xab/0x26c [btrfs]()
Aug 15 09:51:42 sofia kernel: [30269.724903] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
Aug 15 09:51:42 sofia kernel: [30269.724914] Pid: 27751, comm: ssh Tainted: G WC 2.6.44.7-dae-xen #2
Aug 15 09:51:42 sofia kernel: [30269.724920] Call Trace:
Aug 15 09:51:42 sofia kernel: [30269.724925] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
Aug 15 09:51:42 sofia kernel: [30269.724946] [<ffffffffa00467d6>] ? btrfs_destroy_inode+0xab/0x26c [btrfs]
Aug 15 09:51:42 sofia kernel: [30269.724966] [<ffffffffa004672b>] ? btrfs_alloc_inode+0x1d9/0x1d9 [btrfs]
Aug 15 09:51:42 sofia kernel: [30269.724974] [<ffffffff810d9943>] ? dispose_list+0x27/0x31
Aug 15 09:51:42 sofia kernel: [30269.724980] [<ffffffff810da65e>] ? prune_icache_sb+0x2a7/0x2c2
Aug 15 09:51:42 sofia kernel: [30269.724987] [<ffffffff810c99e1>] ? prune_super+0xcb/0x138
Aug 15 09:51:42 sofia kernel: [30269.724993] [<ffffffff8110276f>] ? do_raw_spin_unlock.constprop.9+0xc/0xf
Aug 15 09:51:42 sofia kernel: [30269.725001] [<ffffffff8109b7d4>] ? shrink_slab+0x120/0x19d
Aug 15 09:51:42 sofia kernel: [30269.725008] [<ffffffff8109d46f>] ? do_try_to_free_pages+0x251/0x3ba
Aug 15 09:51:42 sofia kernel: [30269.725015] [<ffffffff8109d648>] ? try_to_free_pages+0x70/0x75
Aug 15 09:51:42 sofia kernel: [30269.725023] [<ffffffff81097368>] ? __alloc_pages_nodemask+0x4bf/0x773
Aug 15 09:51:42 sofia kernel: [30269.725030] [<ffffffff812fff66>] ? kmalloc_large_node+0x4f/0x7f
Aug 15 09:51:42 sofia kernel: [30269.925127] [<ffffffff8126a4e1>] ? __alloc_skb+0x6b/0x135
Aug 15 09:51:42 sofia kernel: [30269.925150] [<ffffffff81269103>] ? sock_alloc_send_pskb+0xc7/0x2b5
Aug 15 09:51:42 sofia kernel: [30269.925171] [<ffffffff81005e67>] ? get_phys_to_machine+0x12/0x5d
Aug 15 09:51:42 sofia kernel: [30269.925190] [<ffffffff81003b2a>] ? mfn_to_pfn.part.24+0x52/0x77
Aug 15 09:51:42 sofia kernel: [30269.925208] [<ffffffff812db414>] ? unix_stream_sendmsg+0x113/0x2b8
Aug 15 09:51:42 sofia kernel: [30269.925226] [<ffffffff8109557b>] ? get_pageblock_flags_group+0x30/0x64
Aug 15 09:51:42 sofia kernel: [30269.925241] [<ffffffff81263de0>] ? sock_aio_write+0xa3/0xbf
Aug 15 09:51:42 sofia kernel: [30269.925259] [<ffffffff81099e12>] ? release_pages+0x120/0x12f
Aug 15 09:51:42 sofia kernel: [30269.925276] [<ffffffff810c6ec2>] ? do_sync_write+0xae/0xe6
Aug 15 09:51:42 sofia kernel: [30269.925292] [<ffffffff810bf739>] ? kmem_cache_free+0x11/0x69
Aug 15 09:51:42 sofia kernel: [30269.925309] [<ffffffff810aaed7>] ? remove_vma+0x5c/0x63
Aug 15 09:51:42 sofia kernel: [30269.925323] [<ffffffff810ac047>] ? do_munmap+0x2a7/0x2cf
Aug 15 09:51:42 sofia kernel: [30269.925339] [<ffffffff810c7634>] ? vfs_write+0x9d/0xf8
Aug 15 09:51:42 sofia kernel: [30269.925356] [<ffffffff810c782f>] ? sys_write+0x3e/0x6d
Aug 15 09:51:42 sofia kernel: [30269.925373] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
Aug 15 09:51:42 sofia kernel: [30269.925386] ---[ end trace 17eb064ed1556a0b ]---
But nothing about the umount (some hours later).
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Can't umount a read-only FS ?
2012-08-15 17:32 ` Olivier Bonvalet
@ 2012-08-15 17:43 ` David Sterba
2012-08-15 20:23 ` Olivier Bonvalet
0 siblings, 1 reply; 5+ messages in thread
From: David Sterba @ 2012-08-15 17:43 UTC (permalink / raw)
To: Olivier Bonvalet; +Cc: linux-btrfs
Hi,
On Wed, Aug 15, 2012 at 07:32:45PM +0200, Olivier Bonvalet wrote:
> On 15/08/2012 19:28, Olivier Bonvalet wrote:
> > I have a strange problem with a btrfs partition : after an error, btrfs was forced readonly.
>
> I forgot, it was set readonly after that error :
>
> Aug 15 09:44:33 sofia kernel: [29840.510826] ------------[ cut here ]------------
> Aug 15 09:44:33 sofia kernel: [29840.510850] WARNING: at fs/btrfs/super.c:219 __btrfs_abort_transaction+0x3a/0x95 [btrfs]()
> Aug 15 09:44:33 sofia kernel: [29840.510858] btrfs: Transaction aborted
> Aug 15 09:44:33 sofia kernel: [29840.510860] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
> Aug 15 09:44:33 sofia kernel: [29840.510872] Pid: 26524, comm: btrfs Tainted: G C 2.6.44.7-dae-xen #2
> Aug 15 09:44:33 sofia kernel: [29840.510879] Call Trace:
> Aug 15 09:44:33 sofia kernel: [29840.510893] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
> Aug 15 09:44:33 sofia kernel: [29840.510901] [<ffffffff8103c87b>] ? warn_slowpath_fmt+0x45/0x4a
> Aug 15 09:44:33 sofia kernel: [29840.510924] [<ffffffffa0077346>] ? btrfs_alloc_delayed_item+0x13/0x3b [btrfs]
> Aug 15 09:44:33 sofia kernel: [29840.510941] [<ffffffffa00203d2>] ? __btrfs_abort_transaction+0x3a/0x95 [btrfs]
> Aug 15 09:44:33 sofia kernel: [29840.510964] [<ffffffffa0042c80>] ? btrfs_unlink_subvol+0x1cf/0x255 [btrfs]
my stack pattern recognition leads to this patch:
http://article.gmane.org/gmane.comp.file-systems.btrfs/19105
[PATCH] Btrfs: fix enospc problems when deleting a subvol
part of 3.6-rc and will probably end up in a stable updates of some 3.x.y
branches
> Aug 15 09:44:33 sofia kernel: [29840.510987] [<ffffffffa0062178>] ? btrfs_ioctl_snap_destroy+0x2e0/0x42c [btrfs]
> Aug 15 09:44:33 sofia kernel: [29840.511010] [<ffffffffa0064f8c>] ? btrfs_ioctl+0x4f6/0xfce [btrfs]
> Aug 15 09:44:33 sofia kernel: [29840.511022] [<ffffffff81021ffa>] ? do_page_fault+0x274/0x2f2
> Aug 15 09:44:33 sofia kernel: [29840.511031] [<ffffffff810d39ca>] ? vfs_ioctl+0x1e/0x31
> Aug 15 09:44:33 sofia kernel: [29840.511039] [<ffffffff810d41ba>] ? do_vfs_ioctl+0x3bd/0x3ff
> Aug 15 09:44:33 sofia kernel: [29840.511046] [<ffffffff810d4238>] ? sys_ioctl+0x3c/0x60
> Aug 15 09:44:33 sofia kernel: [29840.511055] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
> Aug 15 09:44:33 sofia kernel: [29840.511062] ---[ end trace 17eb064ed1556a08 ]---
> Aug 15 09:44:33 sofia kernel: [29840.511071] BTRFS error (device dm-1) in btrfs_unlink_subvol:3098: error 28
> Aug 15 09:44:33 sofia kernel: [29840.511077] btrfs is forced readonly
> Aug 15 09:44:33 sofia kernel: [29840.511083] BTRFS error (device dm-1) in btrfs_ioctl_snap_destroy:2026: error 28
>
>
> then in logs I have this warnings :
I haven't looked closer, but they're probably implied by the filesystem
going read-only.
> Aug 15 09:51:42 sofia kernel: [30269.723855] ------------[ cut here ]------------
> Aug 15 09:51:42 sofia kernel: [30269.723893] WARNING: at fs/btrfs/inode.c:6954 btrfs_destroy_inode+0x64/0x26c [btrfs]()
> Aug 15 09:51:42 sofia kernel: [30269.723905] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
> Aug 15 09:51:42 sofia kernel: [30269.723920] Pid: 27751, comm: ssh Tainted: G WC 2.6.44.7-dae-xen #2
> Aug 15 09:51:42 sofia kernel: [30269.723928] Call Trace:
> Aug 15 09:51:42 sofia kernel: [30269.723939] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
> Aug 15 09:51:42 sofia kernel: [30269.723975] [<ffffffffa004678f>] ? btrfs_destroy_inode+0x64/0x26c [btrfs]
> Aug 15 09:51:42 sofia kernel: [30269.724010] [<ffffffffa004672b>] ? btrfs_alloc_inode+0x1d9/0x1d9 [btrfs]
> Aug 15 09:51:42 sofia kernel: [30269.724052] [<ffffffff810d9943>] ? dispose_list+0x27/0x31
> Aug 15 09:51:42 sofia kernel: [30269.724066] [<ffffffff810da65e>] ? prune_icache_sb+0x2a7/0x2c2
> Aug 15 09:51:42 sofia kernel: [30269.724086] [<ffffffff810c99e1>] ? prune_super+0xcb/0x138
> Aug 15 09:51:42 sofia kernel: [30269.724104] [<ffffffff8110276f>] ? do_raw_spin_unlock.constprop.9+0xc/0xf
> Aug 15 09:51:42 sofia kernel: [30269.724124] [<ffffffff8109b7d4>] ? shrink_slab+0x120/0x19d
> Aug 15 09:51:42 sofia kernel: [30269.724139] [<ffffffff8109d46f>] ? do_try_to_free_pages+0x251/0x3ba
> Aug 15 09:51:42 sofia kernel: [30269.724156] [<ffffffff8109d648>] ? try_to_free_pages+0x70/0x75
> Aug 15 09:51:42 sofia kernel: [30269.724172] [<ffffffff81097368>] ? __alloc_pages_nodemask+0x4bf/0x773
> Aug 15 09:51:42 sofia kernel: [30269.724191] [<ffffffff812fff66>] ? kmalloc_large_node+0x4f/0x7f
> Aug 15 09:51:42 sofia kernel: [30269.724204] [<ffffffff8126a4e1>] ? __alloc_skb+0x6b/0x135
> Aug 15 09:51:42 sofia kernel: [30269.724218] [<ffffffff81269103>] ? sock_alloc_send_pskb+0xc7/0x2b5
> Aug 15 09:51:42 sofia kernel: [30269.724234] [<ffffffff81005e67>] ? get_phys_to_machine+0x12/0x5d
> Aug 15 09:51:42 sofia kernel: [30269.724251] [<ffffffff81003b2a>] ? mfn_to_pfn.part.24+0x52/0x77
> Aug 15 09:51:42 sofia kernel: [30269.724271] [<ffffffff812db414>] ? unix_stream_sendmsg+0x113/0x2b8
> Aug 15 09:51:42 sofia kernel: [30269.724289] [<ffffffff8109557b>] ? get_pageblock_flags_group+0x30/0x64
> Aug 15 09:51:42 sofia kernel: [30269.724302] [<ffffffff81263de0>] ? sock_aio_write+0xa3/0xbf
> Aug 15 09:51:42 sofia kernel: [30269.724316] [<ffffffff81099e12>] ? release_pages+0x120/0x12f
> Aug 15 09:51:42 sofia kernel: [30269.724335] [<ffffffff810c6ec2>] ? do_sync_write+0xae/0xe6
> Aug 15 09:51:42 sofia kernel: [30269.724347] [<ffffffff810bf739>] ? kmem_cache_free+0x11/0x69
> Aug 15 09:51:42 sofia kernel: [30269.724361] [<ffffffff810aaed7>] ? remove_vma+0x5c/0x63
> Aug 15 09:51:42 sofia kernel: [30269.724371] [<ffffffff810ac047>] ? do_munmap+0x2a7/0x2cf
> Aug 15 09:51:42 sofia kernel: [30269.724385] [<ffffffff810c7634>] ? vfs_write+0x9d/0xf8
> Aug 15 09:51:42 sofia kernel: [30269.724396] [<ffffffff810c782f>] ? sys_write+0x3e/0x6d
> Aug 15 09:51:42 sofia kernel: [30269.724409] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
> Aug 15 09:51:42 sofia kernel: [30269.724421] ---[ end trace 17eb064ed1556a09 ]---
> Aug 15 09:51:42 sofia kernel: [30269.724428] ------------[ cut here ]------------
> Aug 15 09:51:42 sofia kernel: [30269.724456] WARNING: at fs/btrfs/inode.c:6955 btrfs_destroy_inode+0x7b/0x26c [btrfs]()
> Aug 15 09:51:42 sofia kernel: [30269.724470] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
> Aug 15 09:51:42 sofia kernel: [30269.724487] Pid: 27751, comm: ssh Tainted: G WC 2.6.44.7-dae-xen #2
> Aug 15 09:51:42 sofia kernel: [30269.724499] Call Trace:
> Aug 15 09:51:42 sofia kernel: [30269.724508] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
> Aug 15 09:51:42 sofia kernel: [30269.724536] [<ffffffffa00467a6>] ? btrfs_destroy_inode+0x7b/0x26c [btrfs]
> Aug 15 09:51:42 sofia kernel: [30269.724569] [<ffffffffa004672b>] ? btrfs_alloc_inode+0x1d9/0x1d9 [btrfs]
> Aug 15 09:51:42 sofia kernel: [30269.724582] [<ffffffff810d9943>] ? dispose_list+0x27/0x31
> Aug 15 09:51:42 sofia kernel: [30269.724591] [<ffffffff810da65e>] ? prune_icache_sb+0x2a7/0x2c2
> Aug 15 09:51:42 sofia kernel: [30269.724602] [<ffffffff810c99e1>] ? prune_super+0xcb/0x138
> Aug 15 09:51:42 sofia kernel: [30269.724611] [<ffffffff8110276f>] ? do_raw_spin_unlock.constprop.9+0xc/0xf
> Aug 15 09:51:42 sofia kernel: [30269.724622] [<ffffffff8109b7d4>] ? shrink_slab+0x120/0x19d
> Aug 15 09:51:42 sofia kernel: [30269.724632] [<ffffffff8109d46f>] ? do_try_to_free_pages+0x251/0x3ba
> Aug 15 09:51:42 sofia kernel: [30269.724643] [<ffffffff8109d648>] ? try_to_free_pages+0x70/0x75
> Aug 15 09:51:42 sofia kernel: [30269.724663] [<ffffffff81097368>] ? __alloc_pages_nodemask+0x4bf/0x773
> Aug 15 09:51:42 sofia kernel: [30269.724734] [<ffffffff812fff66>] ? kmalloc_large_node+0x4f/0x7f
> Aug 15 09:51:42 sofia kernel: [30269.724747] [<ffffffff8126a4e1>] ? __alloc_skb+0x6b/0x135
> Aug 15 09:51:42 sofia kernel: [30269.724758] [<ffffffff81269103>] ? sock_alloc_send_pskb+0xc7/0x2b5
> Aug 15 09:51:42 sofia kernel: [30269.724775] [<ffffffff81005e67>] ? get_phys_to_machine+0x12/0x5d
> Aug 15 09:51:42 sofia kernel: [30269.724786] [<ffffffff81003b2a>] ? mfn_to_pfn.part.24+0x52/0x77
> Aug 15 09:51:42 sofia kernel: [30269.724797] [<ffffffff812db414>] ? unix_stream_sendmsg+0x113/0x2b8
> Aug 15 09:51:42 sofia kernel: [30269.724805] [<ffffffff8109557b>] ? get_pageblock_flags_group+0x30/0x64
> Aug 15 09:51:42 sofia kernel: [30269.724813] [<ffffffff81263de0>] ? sock_aio_write+0xa3/0xbf
> Aug 15 09:51:42 sofia kernel: [30269.724819] [<ffffffff81099e12>] ? release_pages+0x120/0x12f
> Aug 15 09:51:42 sofia kernel: [30269.724827] [<ffffffff810c6ec2>] ? do_sync_write+0xae/0xe6
> Aug 15 09:51:42 sofia kernel: [30269.724834] [<ffffffff810bf739>] ? kmem_cache_free+0x11/0x69
> Aug 15 09:51:42 sofia kernel: [30269.724840] [<ffffffff810aaed7>] ? remove_vma+0x5c/0x63
> Aug 15 09:51:42 sofia kernel: [30269.724846] [<ffffffff810ac047>] ? do_munmap+0x2a7/0x2cf
> Aug 15 09:51:42 sofia kernel: [30269.724852] [<ffffffff810c7634>] ? vfs_write+0x9d/0xf8
> Aug 15 09:51:42 sofia kernel: [30269.724859] [<ffffffff810c782f>] ? sys_write+0x3e/0x6d
> Aug 15 09:51:42 sofia kernel: [30269.724865] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
> Aug 15 09:51:42 sofia kernel: [30269.724871] ---[ end trace 17eb064ed1556a0a ]---
> Aug 15 09:51:42 sofia kernel: [30269.724876] ------------[ cut here ]------------
> Aug 15 09:51:42 sofia kernel: [30269.724896] WARNING: at fs/btrfs/inode.c:6957 btrfs_destroy_inode+0xab/0x26c [btrfs]()
> Aug 15 09:51:42 sofia kernel: [30269.724903] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
> Aug 15 09:51:42 sofia kernel: [30269.724914] Pid: 27751, comm: ssh Tainted: G WC 2.6.44.7-dae-xen #2
> Aug 15 09:51:42 sofia kernel: [30269.724920] Call Trace:
> Aug 15 09:51:42 sofia kernel: [30269.724925] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
> Aug 15 09:51:42 sofia kernel: [30269.724946] [<ffffffffa00467d6>] ? btrfs_destroy_inode+0xab/0x26c [btrfs]
> Aug 15 09:51:42 sofia kernel: [30269.724966] [<ffffffffa004672b>] ? btrfs_alloc_inode+0x1d9/0x1d9 [btrfs]
> Aug 15 09:51:42 sofia kernel: [30269.724974] [<ffffffff810d9943>] ? dispose_list+0x27/0x31
> Aug 15 09:51:42 sofia kernel: [30269.724980] [<ffffffff810da65e>] ? prune_icache_sb+0x2a7/0x2c2
> Aug 15 09:51:42 sofia kernel: [30269.724987] [<ffffffff810c99e1>] ? prune_super+0xcb/0x138
> Aug 15 09:51:42 sofia kernel: [30269.724993] [<ffffffff8110276f>] ? do_raw_spin_unlock.constprop.9+0xc/0xf
> Aug 15 09:51:42 sofia kernel: [30269.725001] [<ffffffff8109b7d4>] ? shrink_slab+0x120/0x19d
> Aug 15 09:51:42 sofia kernel: [30269.725008] [<ffffffff8109d46f>] ? do_try_to_free_pages+0x251/0x3ba
> Aug 15 09:51:42 sofia kernel: [30269.725015] [<ffffffff8109d648>] ? try_to_free_pages+0x70/0x75
> Aug 15 09:51:42 sofia kernel: [30269.725023] [<ffffffff81097368>] ? __alloc_pages_nodemask+0x4bf/0x773
> Aug 15 09:51:42 sofia kernel: [30269.725030] [<ffffffff812fff66>] ? kmalloc_large_node+0x4f/0x7f
> Aug 15 09:51:42 sofia kernel: [30269.925127] [<ffffffff8126a4e1>] ? __alloc_skb+0x6b/0x135
> Aug 15 09:51:42 sofia kernel: [30269.925150] [<ffffffff81269103>] ? sock_alloc_send_pskb+0xc7/0x2b5
> Aug 15 09:51:42 sofia kernel: [30269.925171] [<ffffffff81005e67>] ? get_phys_to_machine+0x12/0x5d
> Aug 15 09:51:42 sofia kernel: [30269.925190] [<ffffffff81003b2a>] ? mfn_to_pfn.part.24+0x52/0x77
> Aug 15 09:51:42 sofia kernel: [30269.925208] [<ffffffff812db414>] ? unix_stream_sendmsg+0x113/0x2b8
> Aug 15 09:51:42 sofia kernel: [30269.925226] [<ffffffff8109557b>] ? get_pageblock_flags_group+0x30/0x64
> Aug 15 09:51:42 sofia kernel: [30269.925241] [<ffffffff81263de0>] ? sock_aio_write+0xa3/0xbf
> Aug 15 09:51:42 sofia kernel: [30269.925259] [<ffffffff81099e12>] ? release_pages+0x120/0x12f
> Aug 15 09:51:42 sofia kernel: [30269.925276] [<ffffffff810c6ec2>] ? do_sync_write+0xae/0xe6
> Aug 15 09:51:42 sofia kernel: [30269.925292] [<ffffffff810bf739>] ? kmem_cache_free+0x11/0x69
> Aug 15 09:51:42 sofia kernel: [30269.925309] [<ffffffff810aaed7>] ? remove_vma+0x5c/0x63
> Aug 15 09:51:42 sofia kernel: [30269.925323] [<ffffffff810ac047>] ? do_munmap+0x2a7/0x2cf
> Aug 15 09:51:42 sofia kernel: [30269.925339] [<ffffffff810c7634>] ? vfs_write+0x9d/0xf8
> Aug 15 09:51:42 sofia kernel: [30269.925356] [<ffffffff810c782f>] ? sys_write+0x3e/0x6d
> Aug 15 09:51:42 sofia kernel: [30269.925373] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
> Aug 15 09:51:42 sofia kernel: [30269.925386] ---[ end trace 17eb064ed1556a0b ]---
>
>
> But nothing about the umount (some hours later).
> --
> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Can't umount a read-only FS ?
2012-08-15 17:43 ` David Sterba
@ 2012-08-15 20:23 ` Olivier Bonvalet
0 siblings, 0 replies; 5+ messages in thread
From: Olivier Bonvalet @ 2012-08-15 20:23 UTC (permalink / raw)
To: linux-btrfs
Ok, thanks. So I will wait for the 3.5.3 kernel (since 3.5.2 don't seem to have any btrfs fix).
On 15/08/2012 19:43, David Sterba wrote:
> Hi,
>
> On Wed, Aug 15, 2012 at 07:32:45PM +0200, Olivier Bonvalet wrote:
>> On 15/08/2012 19:28, Olivier Bonvalet wrote:
>>> I have a strange problem with a btrfs partition : after an error, btrfs was forced readonly.
>>
>> I forgot, it was set readonly after that error :
>>
>> Aug 15 09:44:33 sofia kernel: [29840.510826] ------------[ cut here ]------------
>> Aug 15 09:44:33 sofia kernel: [29840.510850] WARNING: at fs/btrfs/super.c:219 __btrfs_abort_transaction+0x3a/0x95 [btrfs]()
>> Aug 15 09:44:33 sofia kernel: [29840.510858] btrfs: Transaction aborted
>> Aug 15 09:44:33 sofia kernel: [29840.510860] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
>> Aug 15 09:44:33 sofia kernel: [29840.510872] Pid: 26524, comm: btrfs Tainted: G C 2.6.44.7-dae-xen #2
>> Aug 15 09:44:33 sofia kernel: [29840.510879] Call Trace:
>> Aug 15 09:44:33 sofia kernel: [29840.510893] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
>> Aug 15 09:44:33 sofia kernel: [29840.510901] [<ffffffff8103c87b>] ? warn_slowpath_fmt+0x45/0x4a
>> Aug 15 09:44:33 sofia kernel: [29840.510924] [<ffffffffa0077346>] ? btrfs_alloc_delayed_item+0x13/0x3b [btrfs]
>> Aug 15 09:44:33 sofia kernel: [29840.510941] [<ffffffffa00203d2>] ? __btrfs_abort_transaction+0x3a/0x95 [btrfs]
>> Aug 15 09:44:33 sofia kernel: [29840.510964] [<ffffffffa0042c80>] ? btrfs_unlink_subvol+0x1cf/0x255 [btrfs]
>
> my stack pattern recognition leads to this patch:
>
> http://article.gmane.org/gmane.comp.file-systems.btrfs/19105
> [PATCH] Btrfs: fix enospc problems when deleting a subvol
>
> part of 3.6-rc and will probably end up in a stable updates of some 3.x.y
> branches
>
>
>> Aug 15 09:44:33 sofia kernel: [29840.510987] [<ffffffffa0062178>] ? btrfs_ioctl_snap_destroy+0x2e0/0x42c [btrfs]
>> Aug 15 09:44:33 sofia kernel: [29840.511010] [<ffffffffa0064f8c>] ? btrfs_ioctl+0x4f6/0xfce [btrfs]
>> Aug 15 09:44:33 sofia kernel: [29840.511022] [<ffffffff81021ffa>] ? do_page_fault+0x274/0x2f2
>> Aug 15 09:44:33 sofia kernel: [29840.511031] [<ffffffff810d39ca>] ? vfs_ioctl+0x1e/0x31
>> Aug 15 09:44:33 sofia kernel: [29840.511039] [<ffffffff810d41ba>] ? do_vfs_ioctl+0x3bd/0x3ff
>> Aug 15 09:44:33 sofia kernel: [29840.511046] [<ffffffff810d4238>] ? sys_ioctl+0x3c/0x60
>> Aug 15 09:44:33 sofia kernel: [29840.511055] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
>> Aug 15 09:44:33 sofia kernel: [29840.511062] ---[ end trace 17eb064ed1556a08 ]---
>> Aug 15 09:44:33 sofia kernel: [29840.511071] BTRFS error (device dm-1) in btrfs_unlink_subvol:3098: error 28
>> Aug 15 09:44:33 sofia kernel: [29840.511077] btrfs is forced readonly
>> Aug 15 09:44:33 sofia kernel: [29840.511083] BTRFS error (device dm-1) in btrfs_ioctl_snap_destroy:2026: error 28
>>
>>
>> then in logs I have this warnings :
>
> I haven't looked closer, but they're probably implied by the filesystem
> going read-only.
>
>> Aug 15 09:51:42 sofia kernel: [30269.723855] ------------[ cut here ]------------
>> Aug 15 09:51:42 sofia kernel: [30269.723893] WARNING: at fs/btrfs/inode.c:6954 btrfs_destroy_inode+0x64/0x26c [btrfs]()
>> Aug 15 09:51:42 sofia kernel: [30269.723905] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
>> Aug 15 09:51:42 sofia kernel: [30269.723920] Pid: 27751, comm: ssh Tainted: G WC 2.6.44.7-dae-xen #2
>> Aug 15 09:51:42 sofia kernel: [30269.723928] Call Trace:
>> Aug 15 09:51:42 sofia kernel: [30269.723939] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
>> Aug 15 09:51:42 sofia kernel: [30269.723975] [<ffffffffa004678f>] ? btrfs_destroy_inode+0x64/0x26c [btrfs]
>> Aug 15 09:51:42 sofia kernel: [30269.724010] [<ffffffffa004672b>] ? btrfs_alloc_inode+0x1d9/0x1d9 [btrfs]
>> Aug 15 09:51:42 sofia kernel: [30269.724052] [<ffffffff810d9943>] ? dispose_list+0x27/0x31
>> Aug 15 09:51:42 sofia kernel: [30269.724066] [<ffffffff810da65e>] ? prune_icache_sb+0x2a7/0x2c2
>> Aug 15 09:51:42 sofia kernel: [30269.724086] [<ffffffff810c99e1>] ? prune_super+0xcb/0x138
>> Aug 15 09:51:42 sofia kernel: [30269.724104] [<ffffffff8110276f>] ? do_raw_spin_unlock.constprop.9+0xc/0xf
>> Aug 15 09:51:42 sofia kernel: [30269.724124] [<ffffffff8109b7d4>] ? shrink_slab+0x120/0x19d
>> Aug 15 09:51:42 sofia kernel: [30269.724139] [<ffffffff8109d46f>] ? do_try_to_free_pages+0x251/0x3ba
>> Aug 15 09:51:42 sofia kernel: [30269.724156] [<ffffffff8109d648>] ? try_to_free_pages+0x70/0x75
>> Aug 15 09:51:42 sofia kernel: [30269.724172] [<ffffffff81097368>] ? __alloc_pages_nodemask+0x4bf/0x773
>> Aug 15 09:51:42 sofia kernel: [30269.724191] [<ffffffff812fff66>] ? kmalloc_large_node+0x4f/0x7f
>> Aug 15 09:51:42 sofia kernel: [30269.724204] [<ffffffff8126a4e1>] ? __alloc_skb+0x6b/0x135
>> Aug 15 09:51:42 sofia kernel: [30269.724218] [<ffffffff81269103>] ? sock_alloc_send_pskb+0xc7/0x2b5
>> Aug 15 09:51:42 sofia kernel: [30269.724234] [<ffffffff81005e67>] ? get_phys_to_machine+0x12/0x5d
>> Aug 15 09:51:42 sofia kernel: [30269.724251] [<ffffffff81003b2a>] ? mfn_to_pfn.part.24+0x52/0x77
>> Aug 15 09:51:42 sofia kernel: [30269.724271] [<ffffffff812db414>] ? unix_stream_sendmsg+0x113/0x2b8
>> Aug 15 09:51:42 sofia kernel: [30269.724289] [<ffffffff8109557b>] ? get_pageblock_flags_group+0x30/0x64
>> Aug 15 09:51:42 sofia kernel: [30269.724302] [<ffffffff81263de0>] ? sock_aio_write+0xa3/0xbf
>> Aug 15 09:51:42 sofia kernel: [30269.724316] [<ffffffff81099e12>] ? release_pages+0x120/0x12f
>> Aug 15 09:51:42 sofia kernel: [30269.724335] [<ffffffff810c6ec2>] ? do_sync_write+0xae/0xe6
>> Aug 15 09:51:42 sofia kernel: [30269.724347] [<ffffffff810bf739>] ? kmem_cache_free+0x11/0x69
>> Aug 15 09:51:42 sofia kernel: [30269.724361] [<ffffffff810aaed7>] ? remove_vma+0x5c/0x63
>> Aug 15 09:51:42 sofia kernel: [30269.724371] [<ffffffff810ac047>] ? do_munmap+0x2a7/0x2cf
>> Aug 15 09:51:42 sofia kernel: [30269.724385] [<ffffffff810c7634>] ? vfs_write+0x9d/0xf8
>> Aug 15 09:51:42 sofia kernel: [30269.724396] [<ffffffff810c782f>] ? sys_write+0x3e/0x6d
>> Aug 15 09:51:42 sofia kernel: [30269.724409] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
>> Aug 15 09:51:42 sofia kernel: [30269.724421] ---[ end trace 17eb064ed1556a09 ]---
>> Aug 15 09:51:42 sofia kernel: [30269.724428] ------------[ cut here ]------------
>> Aug 15 09:51:42 sofia kernel: [30269.724456] WARNING: at fs/btrfs/inode.c:6955 btrfs_destroy_inode+0x7b/0x26c [btrfs]()
>> Aug 15 09:51:42 sofia kernel: [30269.724470] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
>> Aug 15 09:51:42 sofia kernel: [30269.724487] Pid: 27751, comm: ssh Tainted: G WC 2.6.44.7-dae-xen #2
>> Aug 15 09:51:42 sofia kernel: [30269.724499] Call Trace:
>> Aug 15 09:51:42 sofia kernel: [30269.724508] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
>> Aug 15 09:51:42 sofia kernel: [30269.724536] [<ffffffffa00467a6>] ? btrfs_destroy_inode+0x7b/0x26c [btrfs]
>> Aug 15 09:51:42 sofia kernel: [30269.724569] [<ffffffffa004672b>] ? btrfs_alloc_inode+0x1d9/0x1d9 [btrfs]
>> Aug 15 09:51:42 sofia kernel: [30269.724582] [<ffffffff810d9943>] ? dispose_list+0x27/0x31
>> Aug 15 09:51:42 sofia kernel: [30269.724591] [<ffffffff810da65e>] ? prune_icache_sb+0x2a7/0x2c2
>> Aug 15 09:51:42 sofia kernel: [30269.724602] [<ffffffff810c99e1>] ? prune_super+0xcb/0x138
>> Aug 15 09:51:42 sofia kernel: [30269.724611] [<ffffffff8110276f>] ? do_raw_spin_unlock.constprop.9+0xc/0xf
>> Aug 15 09:51:42 sofia kernel: [30269.724622] [<ffffffff8109b7d4>] ? shrink_slab+0x120/0x19d
>> Aug 15 09:51:42 sofia kernel: [30269.724632] [<ffffffff8109d46f>] ? do_try_to_free_pages+0x251/0x3ba
>> Aug 15 09:51:42 sofia kernel: [30269.724643] [<ffffffff8109d648>] ? try_to_free_pages+0x70/0x75
>> Aug 15 09:51:42 sofia kernel: [30269.724663] [<ffffffff81097368>] ? __alloc_pages_nodemask+0x4bf/0x773
>> Aug 15 09:51:42 sofia kernel: [30269.724734] [<ffffffff812fff66>] ? kmalloc_large_node+0x4f/0x7f
>> Aug 15 09:51:42 sofia kernel: [30269.724747] [<ffffffff8126a4e1>] ? __alloc_skb+0x6b/0x135
>> Aug 15 09:51:42 sofia kernel: [30269.724758] [<ffffffff81269103>] ? sock_alloc_send_pskb+0xc7/0x2b5
>> Aug 15 09:51:42 sofia kernel: [30269.724775] [<ffffffff81005e67>] ? get_phys_to_machine+0x12/0x5d
>> Aug 15 09:51:42 sofia kernel: [30269.724786] [<ffffffff81003b2a>] ? mfn_to_pfn.part.24+0x52/0x77
>> Aug 15 09:51:42 sofia kernel: [30269.724797] [<ffffffff812db414>] ? unix_stream_sendmsg+0x113/0x2b8
>> Aug 15 09:51:42 sofia kernel: [30269.724805] [<ffffffff8109557b>] ? get_pageblock_flags_group+0x30/0x64
>> Aug 15 09:51:42 sofia kernel: [30269.724813] [<ffffffff81263de0>] ? sock_aio_write+0xa3/0xbf
>> Aug 15 09:51:42 sofia kernel: [30269.724819] [<ffffffff81099e12>] ? release_pages+0x120/0x12f
>> Aug 15 09:51:42 sofia kernel: [30269.724827] [<ffffffff810c6ec2>] ? do_sync_write+0xae/0xe6
>> Aug 15 09:51:42 sofia kernel: [30269.724834] [<ffffffff810bf739>] ? kmem_cache_free+0x11/0x69
>> Aug 15 09:51:42 sofia kernel: [30269.724840] [<ffffffff810aaed7>] ? remove_vma+0x5c/0x63
>> Aug 15 09:51:42 sofia kernel: [30269.724846] [<ffffffff810ac047>] ? do_munmap+0x2a7/0x2cf
>> Aug 15 09:51:42 sofia kernel: [30269.724852] [<ffffffff810c7634>] ? vfs_write+0x9d/0xf8
>> Aug 15 09:51:42 sofia kernel: [30269.724859] [<ffffffff810c782f>] ? sys_write+0x3e/0x6d
>> Aug 15 09:51:42 sofia kernel: [30269.724865] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
>> Aug 15 09:51:42 sofia kernel: [30269.724871] ---[ end trace 17eb064ed1556a0a ]---
>> Aug 15 09:51:42 sofia kernel: [30269.724876] ------------[ cut here ]------------
>> Aug 15 09:51:42 sofia kernel: [30269.724896] WARNING: at fs/btrfs/inode.c:6957 btrfs_destroy_inode+0xab/0x26c [btrfs]()
>> Aug 15 09:51:42 sofia kernel: [30269.724903] Modules linked in: ipv6 btrfs zram(C) nf_conntrack
>> Aug 15 09:51:42 sofia kernel: [30269.724914] Pid: 27751, comm: ssh Tainted: G WC 2.6.44.7-dae-xen #2
>> Aug 15 09:51:42 sofia kernel: [30269.724920] Call Trace:
>> Aug 15 09:51:42 sofia kernel: [30269.724925] [<ffffffff8103c7cf>] ? warn_slowpath_common+0x76/0x8a
>> Aug 15 09:51:42 sofia kernel: [30269.724946] [<ffffffffa00467d6>] ? btrfs_destroy_inode+0xab/0x26c [btrfs]
>> Aug 15 09:51:42 sofia kernel: [30269.724966] [<ffffffffa004672b>] ? btrfs_alloc_inode+0x1d9/0x1d9 [btrfs]
>> Aug 15 09:51:42 sofia kernel: [30269.724974] [<ffffffff810d9943>] ? dispose_list+0x27/0x31
>> Aug 15 09:51:42 sofia kernel: [30269.724980] [<ffffffff810da65e>] ? prune_icache_sb+0x2a7/0x2c2
>> Aug 15 09:51:42 sofia kernel: [30269.724987] [<ffffffff810c99e1>] ? prune_super+0xcb/0x138
>> Aug 15 09:51:42 sofia kernel: [30269.724993] [<ffffffff8110276f>] ? do_raw_spin_unlock.constprop.9+0xc/0xf
>> Aug 15 09:51:42 sofia kernel: [30269.725001] [<ffffffff8109b7d4>] ? shrink_slab+0x120/0x19d
>> Aug 15 09:51:42 sofia kernel: [30269.725008] [<ffffffff8109d46f>] ? do_try_to_free_pages+0x251/0x3ba
>> Aug 15 09:51:42 sofia kernel: [30269.725015] [<ffffffff8109d648>] ? try_to_free_pages+0x70/0x75
>> Aug 15 09:51:42 sofia kernel: [30269.725023] [<ffffffff81097368>] ? __alloc_pages_nodemask+0x4bf/0x773
>> Aug 15 09:51:42 sofia kernel: [30269.725030] [<ffffffff812fff66>] ? kmalloc_large_node+0x4f/0x7f
>> Aug 15 09:51:42 sofia kernel: [30269.925127] [<ffffffff8126a4e1>] ? __alloc_skb+0x6b/0x135
>> Aug 15 09:51:42 sofia kernel: [30269.925150] [<ffffffff81269103>] ? sock_alloc_send_pskb+0xc7/0x2b5
>> Aug 15 09:51:42 sofia kernel: [30269.925171] [<ffffffff81005e67>] ? get_phys_to_machine+0x12/0x5d
>> Aug 15 09:51:42 sofia kernel: [30269.925190] [<ffffffff81003b2a>] ? mfn_to_pfn.part.24+0x52/0x77
>> Aug 15 09:51:42 sofia kernel: [30269.925208] [<ffffffff812db414>] ? unix_stream_sendmsg+0x113/0x2b8
>> Aug 15 09:51:42 sofia kernel: [30269.925226] [<ffffffff8109557b>] ? get_pageblock_flags_group+0x30/0x64
>> Aug 15 09:51:42 sofia kernel: [30269.925241] [<ffffffff81263de0>] ? sock_aio_write+0xa3/0xbf
>> Aug 15 09:51:42 sofia kernel: [30269.925259] [<ffffffff81099e12>] ? release_pages+0x120/0x12f
>> Aug 15 09:51:42 sofia kernel: [30269.925276] [<ffffffff810c6ec2>] ? do_sync_write+0xae/0xe6
>> Aug 15 09:51:42 sofia kernel: [30269.925292] [<ffffffff810bf739>] ? kmem_cache_free+0x11/0x69
>> Aug 15 09:51:42 sofia kernel: [30269.925309] [<ffffffff810aaed7>] ? remove_vma+0x5c/0x63
>> Aug 15 09:51:42 sofia kernel: [30269.925323] [<ffffffff810ac047>] ? do_munmap+0x2a7/0x2cf
>> Aug 15 09:51:42 sofia kernel: [30269.925339] [<ffffffff810c7634>] ? vfs_write+0x9d/0xf8
>> Aug 15 09:51:42 sofia kernel: [30269.925356] [<ffffffff810c782f>] ? sys_write+0x3e/0x6d
>> Aug 15 09:51:42 sofia kernel: [30269.925373] [<ffffffff81304979>] ? system_call_fastpath+0x16/0x1b
>> Aug 15 09:51:42 sofia kernel: [30269.925386] ---[ end trace 17eb064ed1556a0b ]---
>>
>>
>> But nothing about the umount (some hours later).
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
>> the body of a message to majordomo@vger.kernel.org
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>
^ permalink raw reply [flat|nested] 5+ messages in thread
* [solved] Re: Can't umount a read-only FS ?
2012-08-15 17:28 Can't umount a read-only FS ? Olivier Bonvalet
2012-08-15 17:32 ` Olivier Bonvalet
@ 2012-08-15 22:29 ` Olivier Bonvalet
1 sibling, 0 replies; 5+ messages in thread
From: Olivier Bonvalet @ 2012-08-15 22:29 UTC (permalink / raw)
To: linux-btrfs
On 15/08/2012 19:28, Olivier Bonvalet wrote:
> Hi,
>
> I have a strange problem with a btrfs partition : after an error, btrfs was forced readonly.
>
> So I try to umount it, to launch btrfsck, but it doesn't work :
>
> root! sofia:~# umount /backup/
> root! sofia:~# btrfsck /dev/vg-sofia/backup
> /dev/vg-sofia/backup is currently mounted. Aborting.
> root! sofia:~# umount /backup/
> umount: /backup/: not mounted
> root! sofia:~# btrfsck /dev/vg-sofia/backup
> /dev/vg-sofia/backup is currently mounted. Aborting.
> root! sofia:~#
>
>
Well... I was using a "mount --bind" of a directory within that FS... So not btrfs related.
Sorry for noise, once again.
Olivier
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2012-08-15 22:29 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2012-08-15 17:28 Can't umount a read-only FS ? Olivier Bonvalet
2012-08-15 17:32 ` Olivier Bonvalet
2012-08-15 17:43 ` David Sterba
2012-08-15 20:23 ` Olivier Bonvalet
2012-08-15 22:29 ` [solved] " Olivier Bonvalet
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