From: Blaz Repas <blist@bss.si>
To: linux-btrfs@vger.kernel.org
Subject: Re: 3.14.0rc3: did not find backref in send_root
Date: Tue, 06 May 2014 08:49:50 +0200 [thread overview]
Message-ID: <5368860E.2010107@bss.si> (raw)
In-Reply-To: <20140506061053.GA17689@davidb.org>
On 05/06/2014 08:10 AM, David Brown wrote:
> On Mon, Feb 24, 2014 at 10:36:52PM -0800, Marc MERLIN wrote:
>> I got this during a btrfs send:
>> BTRFS error (device dm-2): did not find backref in send_root.
>> inode=22672, offset=524288, disk_byte=1490517954560 found
>> extent=1490517954560
>>
>> I'll try a scrub when I've finished my backup, but is there anything I
>> can run on the file I've found from the inode?
>>
>> gargamel:/mnt/dshelf1/Sound# btrfs inspect-internal inode-resolve -v
>> 22672 file.mp3
>> ioctl ret=0, bytes_left=3998, bytes_missing=0, cnt=1, missed=0
>> file.mp3
>
> I've just seen this error:
>
> BTRFS error (device sda4): did not find backref in send_root.
> inode=411890, offset=307200, disk_byte=48100618240 found
> extent=48100618240
>
> during a send between two snapshots I have.
>
> after moving to 3.14.2. I've seen it on two filesystems now since
> moving to 3.14. I have the two readonly snapshots if there is
> anything helpful I can figure out from them.
>
> Scrub reports no errors, but I don't seem to be able to back up
> anything now.
>
> David
> --
I am also seeing this on 3.14.1 (on ArchLinux). Scrub also reports no
errors.
I could also not do a ful send. Balancing made it better for a while (I
was able to send a full snapshot of one subvolume, but not another), but
it did not help. Offline repairing the fs with btrfsck --repair also did
not affect it.
Blaz
next prev parent reply other threads:[~2014-05-06 7:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-25 6:36 3.14.0rc3: did not find backref in send_root Marc MERLIN
2014-02-25 7:50 ` Wang Shilong
2014-02-25 17:30 ` 3.14.0rc3: btrfs send ioctl failed with -5: Input/output error Marc MERLIN
2014-02-26 3:38 ` Wang Shilong
2014-02-26 7:46 ` 3.14.0rc3: did not find backref in send_root Marc MERLIN
2014-02-26 7:51 ` Wang Shilong
2014-02-26 17:16 ` Marc MERLIN
2014-05-06 6:10 ` David Brown
2014-05-06 6:49 ` Blaz Repas [this message]
2014-05-10 8:13 ` David Brown
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