diff options
author | Xavier Hernandez <xhernandez@datalab.es> | 2014-09-18 16:50:47 +0200 |
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committer | Vijay Bellur <vbellur@redhat.com> | 2014-09-23 22:46:58 -0700 |
commit | c4440ab8c7417a3bcaadf1cb150476d5ff6a1325 (patch) | |
tree | 531d308bb79b29826a7dd10ca607c076dbef4063 /xlators/mgmt/glusterd | |
parent | 6fffc4eaf408cb9b0b2891404ee54f4ab1dd5e2e (diff) |
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@datalab.es>
Reviewed-on: http://review.gluster.org/8825
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators/mgmt/glusterd')
0 files changed, 0 insertions, 0 deletions