[Bugs] [Bug 1213720] New: [RFE - Snapshot] Snapshot cli operations should not impact scheduled jobs

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1213720

            Bug ID: 1213720
           Summary: [RFE - Snapshot] Snapshot cli operations should not
                    impact scheduled jobs
           Product: GlusterFS
           Version: mainline
         Component: snapshot
          Severity: urgent
          Assignee: bugs at gluster.org
          Reporter: ashah at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com



Description of problem:

when snapshot is scheduled at some point in time, perform any snapshot
operation from cli like snapshot delete, scheduled job is skipped at that point
in time.  

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

[root at localhost core]# rpm -qa | grep glusterfs
glusterfs-api-3.8dev-0.12.gitaa87c31.el6.x86_64
glusterfs-geo-replication-3.8dev-0.12.gitaa87c31.el6.x86_64
samba-glusterfs-3.6.509-169.4.el6rhs.x86_64
glusterfs-cli-3.8dev-0.12.gitaa87c31.el6.x86_64
glusterfs-fuse-3.8dev-0.12.gitaa87c31.el6.x86_64
glusterfs-server-3.8dev-0.12.gitaa87c31.el6.x86_64
glusterfs-rdma-3.8dev-0.12.gitaa87c31.el6.x86_64
glusterfs-debuginfo-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-libs-3.8dev-0.12.gitaa87c31.el6.x86_64
glusterfs-3.8dev-0.12.gitaa87c31.el6.x86_64


How reproducible:

100%

Steps to Reproduce:

1. Create 6*2 distributed replicate volume
2. create shared storage and mount on each storage node on path
/var/run/gluster/shared_storage 
3. initialize scheduler on each storage node e.g run snap_scheduler.py init 
command 
4. Enable scheduler on storage nodes e.g run snap_scheduler.py enable 
5. Add jobs on three different volume, with interval of 1 min. e.g 

JOB_NAME          SCHEDULE          OPERATION         VOLUME NAME       
------------------------------------------------------------------------
job1               */15 * * * *     Snapshot Create   vol0              
job2               */16 * * * *     Snapshot Create   vol1              
job3               */17 * * * *     Snapshot Create   meta              

6. when create snapshot operation is in progress, start deleting existing
snapshots  from cli


Actual results:

One of the scheduled jobs is skipped

Expected results:

Scheduled snaps jobs should not get skip coz of any snapshot cli operation

Additional info:

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