[Bugs] [Bug 1140862] A new xattr is needed to store ec parameters
bugzilla at redhat.com
bugzilla at redhat.com
Wed Sep 24 05:47:02 UTC 2014
https://bugzilla.redhat.com/show_bug.cgi?id=1140862
--- Comment #2 from Anand Avati <aavati at redhat.com> ---
COMMIT: http://review.gluster.org/8825 committed in release-3.6 by Vijay Bellur
(vbellur at redhat.com)
------
commit c4440ab8c7417a3bcaadf1cb150476d5ff6a1325
Author: Xavier Hernandez <xhernandez at datalab.es>
Date: Thu Sep 18 16:50:47 2014 +0200
ec: Add config information in an xattr
To simplify backward compatibility of the ec xlator when some
parameter or the implementation itself is changed, a new xattr
is added to each file with the configuration needed to recover
it.
The new attribute is called 'trusted.ec.config', and it's a 64-bit
value containing the following information:
8 bits: version of the config information (currently always 0)
8 bits: algorithm used to encode the file (currently always 0)
8 bits: size of the galois field (currently always 8)
8 bits: number of bricks
8 bits: redundancy
24 bits: chunk size (currently 512)
This new xattr could allow, in a future version, to have different
configurations per file.
This is a backport of http://review.gluster.org/8770/
Change-Id: I8c12d40ff546cc201fc66caa367484be3d48aeb4
BUG: 1140862
Signed-off-by: Xavier Hernandez <xhernandez at datalab.es>
Reviewed-on: http://review.gluster.org/8825
Reviewed-by: Dan Lambright <dlambrig at redhat.com>
Tested-by: Gluster Build System <jenkins at build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur at redhat.com>
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