[Bugs] [Bug 1200254] New: NFS-Ganesha : Locking of global option file used by NFS-Ganesha.

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1200254

            Bug ID: 1200254
           Summary: NFS-Ganesha : Locking of global option file used by
                    NFS-Ganesha.
           Product: GlusterFS
           Version: mainline
         Component: nfs
          Severity: high
          Assignee: bugs at gluster.org
          Reporter: mmadhusu at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com



Description of problem:

The global option gluster features.ganesha enable will
write into the global 'option' file. Currently, only the snapshot
feature writes into this file. But with CLI changes getting merged,
NFS-Ganesha also writes into the same file.
http://review.gluster.org/#/c/9538/

To handle concurrent multiple transactions correctly, a new lock has to
be introduced on this file. Every operation using this file needs to contest
for the new lock type. This bug is opened to track that change.

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