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From: Konstantinos Skarlatos <k.skarlatos@gmail.com>
To: linux-btrfs@vger.kernel.org
Subject: btrfs filesystems can only be mounted after an unclean shutdown if btrfsck is run and immediately killed!
Date: Fri, 08 Jun 2012 11:26:21 +0300	[thread overview]
Message-ID: <4FD1B72D.3010002@gmail.com> (raw)

Hi all,
I have two multi-disk btrfs filesystems on a Arch linux 3.4.0 system. 
After a power failure, both filesystems refuse to mount

[   10.402284] Btrfs loaded
[   10.402714] device fsid 1e7c18a4-02d6-44b1-8eaf-c01378009cd3 devid 4 
transid 65282 /dev/sdc
[   10.403108] btrfs: force zlib compression
[   10.403130] btrfs: enabling inode map caching
[   10.403152] btrfs: disk space caching is enabled
[   10.403377] btrfs: failed to read the system array on sdc
[   10.403557] btrfs: open_ctree failed
[   10.431763] device fsid 7f7be913-e359-400f-8bdb-7ef48aad3f03 devid 2 
transid 3916 /dev/sdb
[   10.432180] btrfs: force zlib compression
[   10.433040] btrfs: enabling inode map caching
[   10.433892] btrfs: disk space caching is enabled
[   10.434930] btrfs: failed to read the system array on sdb
[   10.435945] btrfs: open_ctree failed


fstab:

UUID=1e7c18a4-02d6-44b1-8eaf-c01378009cd3 /storage/btrfs btrfs 
noatime,compress-force=zlib,space_cache,inode_cache 0 0
UUID=7f7be913-e359-400f-8bdb-7ef48aad3f03 /storage/btrfs2 btrfs 
noatime,compress-force=zlib,space_cache,inode_cache 0 0


The funny thing is that if i run btrfsck for one second on the first 
filesystem and then kill it with ctrl-c, then both filesystems can be 
mounted without any problems!

I have this problem for many months, probably for all 3.x kernels and 
maybe a bit older, all git btrfs tools since at least late last year.

  [root@linuxserver ~/btrfs-progs]# btrfs fi show /dev/sdb
Label: none  uuid: 7f7be913-e359-400f-8bdb-7ef48aad3f03
         Total devices 2 FS bytes used 1.54TB
         devid    1 size 1.82TB used 1.04TB path /dev/sda
         devid    2 size 1.82TB used 1.04TB path /dev/sdb

Btrfs Btrfs v0.19
  [root@linuxserver ~/btrfs-progs]# btrfs fi show /dev/sdf
Label: none  uuid: 1e7c18a4-02d6-44b1-8eaf-c01378009cd3
         Total devices 4 FS bytes used 4.33TB
         devid    5 size 1.82TB used 1.82TB path /dev/sdg
         devid    4 size 1.82TB used 1.82TB path /dev/sdc
         devid    3 size 1.82TB used 1.79TB path /dev/sdf
         devid    1 size 1.82TB used 1.82TB path /dev/sdd

Btrfs Btrfs v0.19

             reply	other threads:[~2012-06-08  8:26 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-08  8:26 Konstantinos Skarlatos [this message]
2012-06-08  8:28 ` btrfs filesystems can only be mounted after an unclean shutdown if btrfsck is run and immediately killed! Tomasz Torcz
2012-06-08  8:38   ` Konstantinos Skarlatos

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