From: "Holger Hoffstätte" <holger.hoffstaette@googlemail.com>
To: linux-btrfs@vger.kernel.org
Subject: Re: non-atomic xattr replacement in btrfs => rsync random errors
Date: Fri, 7 Nov 2014 09:29:16 +0000 (UTC) [thread overview]
Message-ID: <pan.2014.11.07.09.29.16@googlemail.com> (raw)
In-Reply-To: orfvdvaix5.fsf@free.home
On Thu, 06 Nov 2014 23:39:02 -0200, Alexandre Oliva wrote:
> [dropping rsync@lists.samba.org, it rejects posts from non-subscribers;
> refer to https://bugzilla.samba.org/show_bug.cgi?id=10925 instead]
>
> On Nov 6, 2014, Alexandre Oliva <oliva@gnu.org> wrote:
>
>> What makes the problem visible is that btrfs appears to have a race in
>> its handling of xattr replacement, leaving a window between the removal
>> of the old value and the insertion of the new one
>
> The bugs described above occurred with rsync-3.1.0-5.fc20.x86_64 and
> kernel-libre-3.16.7-200.fc20.gnu.x86_64. The btrfs code in kernel-libre
> is unchanged from the corresponding Fedora kernel. The distro is BLAG
> 200k/x86_64, under development.
Just a shot in the dark - could this be related to commit:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b0d5d10f41a0f1cd839408dd94427f2db3553bca
I don't think that made it into 3.16.x.
-h
next prev parent reply other threads:[~2014-11-07 9:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-07 0:37 non-atomic xattr replacement in btrfs => rsync random errors Alexandre Oliva
2014-11-07 1:39 ` Alexandre Oliva
2014-11-07 9:29 ` Holger Hoffstätte [this message]
2014-11-07 11:21 ` Filipe David Manana
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=pan.2014.11.07.09.29.16@googlemail.com \
--to=holger.hoffstaette@googlemail.com \
--cc=linux-btrfs@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox