[Bugs] [Bug 1566822] [Remove-brick] Many files were not migrated from the decommissioned bricks; commit results in data loss

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1566822

Worker Ant <bugzilla-bot at gluster.org> changed:

           What    |Removed                     |Added
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             Status|POST                        |MODIFIED



--- Comment #7 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/19865 committed in release-4.0 by
"Shyamsundar Ranganathan" <srangana at redhat.com> with a commit message-
cluster/dht: Handle file migrations when brick down

The decision as to which node would migrate a file
was based on the gfid of the file. Files were divided
among the nodes for the replica/disperse set. However,
if a brick was down when rebalance started, the nodeuuids
would be saved as NULL and a set of files would not be migrated.

Now, if the nodeuuid is NULL, the first non-null entry in
the set is the node responsible for migrating the file.

Change-Id: I72554c107792c7d534e0f25640654b6f8417d373
fixes: bz#1566822
Signed-off-by: N Balachandran <nbalacha at redhat.com>

(cherry picked from commit 1f0765242a689980265c472646c64473a92d94c0)

Change-Id: I3072ca1f2975eb7ad3c38798e65d60d2312fd057

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