[Bugs] [Bug 1210712] New: nfs-ganesha: ganesha-ha.sh teardown leaves the /var/lib/nfs symlink as it is.

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1210712

            Bug ID: 1210712
           Summary: nfs-ganesha: ganesha-ha.sh teardown leaves the
                    /var/lib/nfs symlink as it is.
           Product: GlusterFS
           Version: 3.7.0
         Component: nfs
          Severity: medium
          Assignee: bugs at gluster.org
          Reporter: saujain at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com



Description of problem:
ganesha-ha.sh teardown leaves the /var/lib/nfs symlink as it is.
The problem happens is that if you trying to bring up the glusterfs-nfs up,
then it won't come up.

Version-Release number of selected component (if applicable):
glusterfs-3.7dev-0.910.git17827de.el6.x86_64
nfs-ganesha-2.2-0.rc7.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1. have a 6x2 volume and pre-requisites done for nfs-ganesha HA
2. now try to bring the nfs-ganesha HA
3. bring the HA down using the ganesha-ha.sh --teardown command
4. gluster volume set <volname> nfs.disable off

Actual results:
glusterfs-nfs won't come up
because of this cause,
[root at nfs2 ~]# ls -ltr /var/lib/nfs
nfs         nfs.backup/ 
[root at nfs2 ~]# ls -ltr /var/lib/nfs
lrwxrwxrwx 1 root root 13 Apr  9 12:48 /var/lib/nfs -> /mnt/nfs2/nfs

logs from /var/log/messages
Apr 10 14:27:52 nfs2 rpcbind: rpcbind terminating on signal. Restart with
"rpcbind -w"
Apr 10 14:28:23 nfs2 rpc.statd[21463]: Version 1.2.3 starting
Apr 10 14:28:23 nfs2 sm-notify[21465]: Version 1.2.3 starting
Apr 10 14:28:23 nfs2 sm-notify[21465]: Failed to open sm: Transport endpoint is
not connected
Apr 10 14:28:23 nfs2 sm-notify[21465]: Failed to open directory sm.bak: No such
file or directory
Apr 10 14:28:23 nfs2 rpc.statd[21463]: Failed to open directory sm: No such
file or directory
Apr 10 14:28:23 nfs2 rpc.statd[21463]: Initializing NSM state
Apr 10 14:28:23 nfs2 rpc.statd[21463]: Failed to create
/var/lib/nfs/statd/state.new: No such file or directory
Apr 10 14:28:32 nfs2 rpc.statd[21550]: Version 1.2.3 starting
Apr 10 14:28:32 nfs2 sm-notify[21551]: Version 1.2.3 starting
Apr 10 14:28:32 nfs2 sm-notify[21551]: Failed to open sm: No such file or
directory
Apr 10 14:28:32 nfs2 sm-notify[21551]: Failed to open directory sm.bak: No such
file or directory
Apr 10 14:28:32 nfs2 rpc.statd[21550]: Failed to open directory sm: No such
file or directory
Apr 10 14:28:32 nfs2 rpc.statd[21550]: Initializing NSM state
Apr 10 14:28:32 nfs2 rpc.statd[21550]: Failed to create
/var/lib/nfs/statd/state.new: No such file or directory

logs from /var/log/glusterfs/nfs.log
[2015-04-10 08:58:38.107753] I [MSGID: 100030] [glusterfsd.c:2288:main]
0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version 3.7dev
(args: /usr/sbin/glusterfs -s localhost --volfile-id gluster/nfs -p
/var/lib/glusterd/nfs/run/nfs.pid -l /var/log/glusterfs/nfs.log -S
/var/run/gluster/251116e567a53584109c49a8edd8b861.socket)
[2015-04-10 08:58:38.122393] I [event-epoll.c:629:event_dispatch_epoll_worker]
0-epoll: Started thread with index 1
[2015-04-10 08:58:39.135380] I [rpcsvc.c:2200:rpcsvc_set_outstanding_rpc_limit]
0-rpc-service: Configured rpc.outstanding-rpc-limit with value 16
[2015-04-10 08:58:39.143857] W [mount3.c:3818:mnt3svc_init] 0-nfs-mount:
Exports auth has been disabled!
[2015-04-10 08:58:39.146860] W [nlm4.c:2463:nlm4svc_init] 0-nfs-NLM: unable to
get pid of rpc.statd from /var/run/rpc.statd.pid 
[2015-04-10 08:58:39.173551] E [nlm4.c:2487:nlm4svc_init] 0-nfs-NLM: unable to
start /sbin/rpc.statd
[2015-04-10 08:58:39.173589] E [nfs.c:1409:init] 0-nfs: Failed to initialize
protocols
[2015-04-10 08:58:39.173599] E [xlator.c:426:xlator_init] 0-nfs-server:
Initialization of volume 'nfs-server' failed, review your volfile again
[2015-04-10 08:58:39.173610] E [graph.c:322:glusterfs_graph_init] 0-nfs-server:
initializing translator failed
[2015-04-10 08:58:39.173620] E [graph.c:661:glusterfs_graph_activate] 0-graph:
init failed
[2015-04-10 08:58:39.174164] W [glusterfsd.c:1212:cleanup_and_exit] (--> 0-:
received signum (0), shutting down


Expected results:
symlink should be removed, only after that the rpc.statd can come up. Only
after that the glusterfs-nfs will come up.

Additional info:

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