[Bugs] [Bug 1274485] New: Unable to mount volume after conversion from distributed to replicated.

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1274485

            Bug ID: 1274485
           Summary: Unable to mount volume after conversion from
                    distributed to replicated.
           Product: GlusterFS
           Version: 3.7.5
         Component: fuse
          Severity: urgent
          Assignee: bugs at gluster.org
          Reporter: redhat.bugs at pointb.co.uk
                CC: bugs at gluster.org, gluster-bugs at redhat.com



Description of problem:

I have setup a distributed volume with a single node/brick. When adding a new
brick to the volume and converting it into a 2 brick replicated volume you
can't mount the volume after reboot. 

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

This is happening on all releases after v3.4.7 as that is the last one where it
works. 

Steps to Reproduce:

1. create new server and setup a single brick distributed volume.
2. build a 2nd server and add this to the distributed volume as such:

gluster volume add-brick myvol replica 2

This will convert the volume from distributed to replicated.

3. mount the volume and all is ok.
4. power off both servers
5. boot 1st server only
5. check glusterd is started
6. try and mount volume on any server and it won't work.

Actual results: volume is not mountable unless all bricks in the replicate have
glusterd running.

Expected results: replicated volume should be mountable on one node only.

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