[Bugs] [Bug 1423412] New: Mount of older client fails

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1423412

            Bug ID: 1423412
           Summary: Mount of older client fails
           Product: GlusterFS
           Version: 3.10
         Component: read-ahead
          Assignee: bugs at gluster.org
          Reporter: pgurusid at redhat.com
                CC: bugs at gluster.org
        Depends On: 1423410



+++ This bug was initially created as a clone of Bug #1423410 +++

Description of problem:

Post upgrading brick nodes from 3.8.8 to master, I tried a to mount from a
3.8.8 client (as I had not upgraded the client till then). The mount failed
with the following in the logs (at the end of the mail).

The issue was that I did an rpm -U to get the latest version, so all vol files
were upgraded (from the spec file, glusterd --xlator-option *.upgrade=on -N),
this resulted in client vol files being upgraded as well, and now the client
does not understand the option as below,

0-testvolssd-readdir-ahead: invalid number format "128KB" in option
"rda-request-size"
0-testvolssd-readdir-ahead: validate of rda-request-size returned -1
0-testvolssd-readdir-ahead: validation failed: invalid number format "128KB" in
option "rda-request-size"

- Shyam

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


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:

--- Additional comment from Worker Ant on 2017-02-17 04:31:12 EST ---

REVIEW: https://review.gluster.org/16657 (glusterd, readdir-ahead: Fix backward
incompatibility) posted (#1) for review on master by Poornima G
(pgurusid at redhat.com)


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1423410
[Bug 1423410] Mount of older client fails
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