[Bugs] [Bug 1266357] New: Distributed Disperse volume random file list error in client after adding new bricks

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1266357

            Bug ID: 1266357
           Summary: Distributed Disperse volume random file list error in
                    client after adding new bricks
           Product: GlusterFS
           Version: 3.7.5
         Component: disperse
          Severity: high
          Assignee: bugs at gluster.org
          Reporter: amudhan83 at gmail.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com



Created attachment 1076872
  --> https://bugzilla.redhat.com/attachment.cgi?id=1076872&action=edit
log from client point

Description of problem:
when new bricks added to a existing running cluster, client1 (fuse) not able to
list file and log throws error but same file able to list after remount  and
now again some other file is not listing. 

but able to list files in another client2 (fuse) when client1 is not bale to
list file.

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


How reproducible:
random

Steps to Reproduce:
1.20 node with each 36 bricks
2.create disperse vol with 8 + 2 adding node{1..10}:/brick1 node{1..10}:/brick2
likewise
3.create folder hierarchy like this.

/root1/subroot1/aaaa/{a..z}/par{1..500}/chil{1..3}
/root1/subroot1/bbbb/{a..z}/par{1..500}/chil{1..3}
/root1/subroot2/aaaa/{a..z}/par{1..500}/chil{1..3}
/root1/subroot2/bbbb/{a..z}/par{1..500}/chil{1..3}
/root2/aaaa/{a..z}/par{1..500}/chil{1..3}
/root3/aaaa/{a..z}/par{1..500}/chil{1..3}
/root3/bbbb/{a..z}/par{1..500}/chil{1..3}
/root3/bbbb/{a..z}/par{1..500}/chil{1..3}

in child folder create 10 files

in existing cluster add new bricks.

add brick node{21..30}:/brick1 node{21..30}:/brick2 likewise

but don't start rebalance or fix-layout now.

also ensure in existing brick usage in cluster are above 80% so data will start
to move to new bricks.

start a transfering data to volume, now files will be written to newly added
bricks.
now read files from any of the chil folders it would be missing.

Actual results:

randomly files are not listing

Expected results:

show list files without any issue

Additional info:

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