Re: non-atomic xattr replacement in btrfs => rsync random errors

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[dropping rsync@xxxxxxxxxxxxxxx, 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@xxxxxxx> 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.

-- 
Alexandre Oliva, freedom fighter    http://FSFLA.org/~lxoliva/
You must be the change you wish to see in the world. -- Gandhi
Be Free! -- http://FSFLA.org/   FSF Latin America board member
Free Software Evangelist|Red Hat Brasil GNU Toolchain Engineer
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