[Bugs] [Bug 1684385] New: [ovirt-gluster] Rolling gluster upgrade from 3.12.5 to 5.3 led to shard on-disk xattrs disappearing

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1684385

            Bug ID: 1684385
           Summary: [ovirt-gluster] Rolling gluster upgrade from 3.12.5 to
                    5.3 led to shard on-disk xattrs disappearing
           Product: GlusterFS
           Version: 5
            Status: NEW
         Component: core
          Keywords: Triaged
          Assignee: bugs at gluster.org
          Reporter: kdhananj at redhat.com
                CC: bugs at gluster.org
  Target Milestone: ---
    Classification: Community



Description of problem:

When gluster bits were upgraded in a hyperconverged ovirt-gluster setup, one
node at a time in online mode from 3.12.5 to 5.3, the following log messages
were seen -

[2019-02-26 16:24:25.126963] E [shard.c:556:shard_modify_size_and_block_count]
(-->/usr/lib64/glusterfs/5.3/xlator/cluster/distribute.so(+0x82a45)
[0x7ff71d05ea45] -->/usr/lib64/glusterfs/5.3/xlator/features/shard.so(+0x5c77)
[0x7ff71cdb4c77] -->/usr/lib64/glusterfs/5.3/xlator/features/shard.so(+0x592e)
[0x7ff71cdb492e] ) 0-engine-shard: Failed to get
trusted.glusterfs.shard.file-size for 3ad3f0c6-a4e6-4b17-bd29-97c32ecc54d7


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


How reproducible:
1/1

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:
shard.file.size xattr should always be accessible.

Additional info:

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