From: David Arendt <admin@prnet.org>
To: Chris Mason <clm@fb.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: btrfs send and kernel 3.17
Date: Mon, 06 Oct 2014 22:51:59 +0200 [thread overview]
Message-ID: <543300EF.2070308@prnet.org> (raw)
In-Reply-To: <1412622378.31886.3@mail.thefacebook.com>
I just tried downgrading to 3.16.3 again. In 3.16.3 btrfs send is
working without any problem. Afterwards I upgraded again to 3.17 and the
problem reappeared. So the problem seems to be kernel version related.
On 10/06/2014 09:06 PM, Chris Mason wrote:
> On Mon, Oct 6, 2014 at 2:50 PM, David Arendt <admin@prnet.org> wrote:
>> Hi,
>>
>> After upgrading to kernel 3.17 btrfs send has stopped working.
>>
>> ERROR: send ioctl failed with -5: Input/output error
>>
>> The following message is printed by kernel:
>>
>> [75322.782197] BTRFS error (device sda2): did not find backref in
>> send_root. inode=461, offset=0, disk_byte=1094713344 found
>> extent=1094713344
>>
>> btrfs inspect-internal inode-resolve -v 461 /u00/root.snapshot returns:
>>
>> /var/log/emerge-fetch.log
>>
>> After removing this file, the error moves on to another file.
>>
>> btrfs scrub output:
>>
>> scrub status for bc31b068-2c36-4ff2-ac5c-7ce55af5371d
>> scrub started at Mon Oct 6 19:49:25 2014 and finished after 1748
>> seconds
>> total bytes scrubbed: 94.21GiB with 0 errors
>>
>> Other then the btrfs send problem, the filesystem works normally.
>>
>> Is this a bug in btrfs-send or is my filesystem corrupted and should be
>> restored from backup ?
>>
>> Please tell me if I can do anything else to help debugging this issue.
>
> Which kernel did you upgrade from? I don't think we have changes in
> 3.17 that should impact this.
>
> Is merge-fetch.log just a simple append-only log file?
>
> -chris
>
>
>
> --
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next prev parent reply other threads:[~2014-10-06 21:01 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-06 18:50 btrfs send and kernel 3.17 David Arendt
2014-10-06 19:06 ` Chris Mason
2014-10-06 19:48 ` David Arendt
2014-10-06 20:51 ` David Arendt [this message]
2014-10-06 22:22 ` Chris Mason
[not found] <DC336054-F307-4A86-AD6D-204E700DE9AA@prnet.org>
2014-10-07 13:19 ` Chris Mason
2014-10-07 20:45 ` David Arendt
2014-10-07 20:46 ` Chris Mason
2014-10-12 11:11 ` David Arendt
2014-10-12 15:24 ` john terragon
2014-10-12 21:35 ` David Arendt
2014-10-13 4:11 ` David Arendt
2014-10-13 12:40 ` john terragon
2014-10-13 15:40 ` David Arendt
2014-10-13 17:22 ` Rich Freeman
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