[Bugs] [Bug 1433571] New: Undo pending xattrs only on the up bricks

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1433571

            Bug ID: 1433571
           Summary: Undo pending xattrs only on the up bricks
           Product: GlusterFS
           Version: mainline
         Component: replicate
          Assignee: ksubrahm at redhat.com
          Reporter: ksubrahm at redhat.com
                CC: bugs at gluster.org



Description of problem:
While doing a conservative merge even if the brick is down the pending xattrs
on that brick will be removed. This will lead to data loss situations. 


Version-Release number of selected component (if applicable):
mainline


How reproducible:
Always

Steps to Reproduce:
1. Create a 3 way replicated volume and set cluster.quorum-type to none
2. Bring bricks b1 & b2 down, and create file f1
3. Bring b3 down & b1 up, and create file f2
4. Bring b1 down & b2 up, and create file f3
5. Bring b3 up, shd will do the conservative merge and create f1 on b2 and f3
on  b3 and undo pending xattr on b1 as well
6. Bring b1 up. Now b1 blames b2 & b3. b2 & b3 does not blame b1. As part of
the heal, b1 is considered as the source, and deletes f1 and f3 from both b2 &
b3 leading to data loss

Actual results:
Pending xattrs are being reset for bricks which are down as well

Expected results:
Undo pending should reset the values of only the bricks which are up

Additional info:

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