[Bugs] [Bug 1501238] New: [SNAPSHOT] Unable to mount a snapshot on client

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1501238

            Bug ID: 1501238
           Summary: [SNAPSHOT] Unable to mount a snapshot on client
           Product: GlusterFS
           Version: 3.12
         Component: snapshot
          Keywords: Regression, ZStream
          Severity: urgent
          Priority: urgent
          Assignee: bugs at gluster.org
          Reporter: rkavunga at redhat.com
                CC: amukherj at redhat.com, bugs at gluster.org,
                    rhs-bugs at redhat.com, rkavunga at redhat.com,
                    storage-qa-internal at redhat.com, vpapnoi at redhat.com
        Depends On: 1500816, 1501235



+++ This bug was initially created as a clone of Bug #1501235 +++

+++ This bug was initially created as a clone of Bug #1500816 +++

Description of problem:

Mounting an activated snapshot to a client by giving the command "mount -t
glusterfs 10.70.42.243:/snaps/test0/bravo /mnt/test0/" fails.
Here, test0 is the snapshot name and bravo is the volume name



Info of the volume:
[root at dhcp42-243 ~]# gluster v info

Volume Name: bravo
Type: Distributed-Replicate
Volume ID: 575514e1-fd58-4205-a418-d551a3463280
Status: Started
Snapshot Count: 254
Number of Bricks: 2 x 3 = 6
Transport-type: tcp
Bricks:
Brick1: 10.70.42.243:/bricks/brick0/bravo
Brick2: 10.70.42.206:/bricks/brick0/bravo
Brick3: 10.70.43.53:/bricks/brick0/bravo
Brick4: 10.70.43.152:/bricks/brick0/bravo
Brick5: 10.70.43.141:/bricks/brick0/bravo
Brick6: 10.70.42.9:/bricks/brick0/bravo
Options Reconfigured:
nfs.disable: on
transport.address-family: inet
features.barrier: disable
features.uss: enable
changelog.changelog: on
cluster.enable-shared-storage: enable
auto-delete: enable



Output of the mount command:

[root at dhcp43-240 ~]# mount -t glusterfs 10.70.42.243:/snaps/test0/bravo
/mnt/test0/
Mount failed. Please check the log file for more details.



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

master



How reproducible: 2/2



Steps to Reproduce:

1. Create and start a volume.
2. Mount the volume on a client and do some I/O's at the mount point.
3. Create a snapshot and activate it.
4. Mount the snapshot on client using the command "mount -t glusterfs <node
ip>:/snaps/<snapname>/<volname> /mnt/<mountname>"



Actual results:

Mount fails with output : Mount failed. Please check the log file for more
details.



Expected results:

Should be mounted successfully.



Additional info:

Output of the log file from the failed mount is attached.
Looking at the log file it seems that the issue is related to the subdir mount.

--- Additional comment from Worker Ant on 2017-10-12 05:08:52 EDT ---

REVIEW: https://review.gluster.org/18506 (mount/fuse : Fix parsing of vol_id
for snapshot volume) posted (#1) for review on master by mohammed rafi  kc
(rkavunga at redhat.com)


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1500816
[Bug 1500816] [SNAPSHOT] Unable to mount a snapshot on client
https://bugzilla.redhat.com/show_bug.cgi?id=1501235
[Bug 1501235] [SNAPSHOT] Unable to mount a snapshot on client
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