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Date: Tue, 14 Aug 2018 08:39:20 -0400
To: Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Cc: sb@techsquare.com
Subject: Re: trouble mounting btrfs filesystem....
In-Reply-To: <23408.34902.778845.675960@techsquare.com>
References: <23408.34902.778845.675960@techsquare.com>
From: "Scott E. Blomquist" <sb@techsquare.com>
Sender: linux-btrfs-owner@vger.kernel.org
List-ID: <linux-btrfs.vger.kernel.org>


Hi All,

Is there any more info needed here?

I can restore from backup if needed but that will take a bit of time.

Checking around it looks like I could try...

    btrfs-zero-log /dev/sda1

Or maybe ..

   btrfsck --repair /dev/sda1

I am just not sure here and would prefer to do the right thing.

Any help would be much appreciated.

Thanks,

sb. Scott Blomquist


Scott E. Blomquist writes:
 > Hi All,
 > 
 > Early this morning there was a power glitch that affected our system.
 > 
 > The second enclosure went offline but the file system stayed up for a
 > bit before rebooting and recovering the 2 missing arrays sdb1 and
 > sdc1.
 > 
 > When mounting we get....
 > 
 >     Aug 12 14:52:43 localhost kernel: [ 8536.649270] BTRFS info (device sda1): has skinny extents
 >     Aug 12 14:54:52 localhost kernel: [ 8665.900321] BTRFS error (device sda1): parent transid verify failed on 177443463479296 wanted 2159304 found 2159295
 >     Aug 12 14:54:52 localhost kernel: [ 8665.985512] BTRFS error (device sda1): parent transid verify failed on 177443463479296 wanted 2159304 found 2159295
 >     Aug 12 14:54:52 localhost kernel: [ 8666.056845] BTRFS error (device sda1): failed to read block groups: -5
 >     Aug 12 14:54:52 localhost kernel: [ 8666.254178] BTRFS error (device sda1): open_ctree failed
 > 
 > We are here...
 > 
 >     # uname -a
 >     Linux localhost 4.17.14-custom #1 SMP Sun Aug 12 11:54:00 EDT 2018 x86_64 x86_64 x86_64 GNU/Linux
 > 
 >     # btrfs --version
 >     btrfs-progs v4.17.1
 >     
 >     # btrfs filesystem show
 >     Label: none  uuid: 8337c837-58cb-430a-a929-7f6d2f50bdbb
 >             Total devices 3 FS bytes used 75.05TiB
 >             devid    1 size 47.30TiB used 42.07TiB path /dev/sda1
 >             devid    2 size 21.83TiB used 16.61TiB path /dev/sdb1
 >             devid    3 size 21.83TiB used 16.61TiB path /dev/sdc1
 >     
 > Thanks for any help.
 > 
 > sb. Scott Blomquist