Many thanks for your response and apologies for my delay in getting back to you.

How was the schedule created - is this using the Remote Data Sync Setup under Storage domain?

Ovirt is configured in ‘Gluster’ mode, no VM support. When snapshotting we are taking a snapshot of the full Gluster volume.

To configure the snapshot schedule I did the following;

From left hand menu select ‘Storage’ and ‘Volumes'

I then selected the volume I wanted to snapshot by clicking on the link within the ‘Name’ column

From here I selected the ‘Snapshots’ tab

From the top menu options I selected the drop down ‘Snapshot’

From the drop down options I selected ‘New’

A new window appeared titled ‘Create/Schedule Snapshot’

I entered a snapshot prefix and description into the available fields and selected the ‘Schedule’ page

On the schedule page I selected ‘Minute’ from the ‘Recurrence’ drop down

Set ‘Interval’ to every ’30’ minutes

Changed timezone to ‘Europe/London=(GMT+00:00) London Standard Time’

Left value in ‘Start Schedule by’ at default value

Set schedule to ‘No End Date’

Interestingly I get the following message on the ‘Create/Schedule Snapshot’ page before clicking on OK;

Frequent creation of snapshots would overload the cluster

Gluster CLI based snapshot scheduling is enabled. It would be disabled once volume snapshots scheduled from UI.

What is interesting is that I have not enabled 'Gluster CLI based snapshot scheduling’.

After clicking OK I am returned to the Volume Snapshots tab.

From this point I get no snapshots created according to the schedule set.

At the time of clicking OK in the WebUI to enable the schedule I get the following in the engine log;

2018-05-14 09:24:11,068Z WARN [org.ovirt.engine.core.dal.job.ExecutionMessageDirector] (default task-128) [85d0b16f-2c0c-464f-bbf1-682c062a4871] The message key 'ScheduleGlusterVolumeSnapshot' is missing from 'bundles/ExecutionMessages'

2018-05-14 09:24:11,090Z INFO [org.ovirt.engine.core.bll.gluster.ScheduleGlusterVolumeSnapshotCommand] (default task-128) [85d0b16f-2c0c-464f-bbf1-682c062a4871] Before acquiring and wait lock 'EngineLock:{exclusiveLocks='[712da1df-4c11-405a-8fb6-f99aebc185c1=GLUSTER_SNAPSHOT]', sharedLocks=''}'

2018-05-14 09:24:11,090Z INFO [org.ovirt.engine.core.bll.gluster.ScheduleGlusterVolumeSnapshotCommand] (default task-128) [85d0b16f-2c0c-464f-bbf1-682c062a4871] Lock-wait acquired to object 'EngineLock:{exclusiveLocks='[712da1df-4c11-405a-8fb6-f99aebc185c1=GLUSTER_SNAPSHOT]', sharedLocks=''}'

2018-05-14 09:24:11,111Z INFO [org.ovirt.engine.core.bll.gluster.ScheduleGlusterVolumeSnapshotCommand] (default task-128) [85d0b16f-2c0c-464f-bbf1-682c062a4871] Running command: ScheduleGlusterVolumeSnapshotCommand internal: false. Entities affected : ID: 712da1df-4c11-405a-8fb6-f99aebc185c1 Type: GlusterVolumeAction group MANIPULATE_GLUSTER_VOLUME with role type ADMIN

2018-05-14 09:24:11,148Z INFO [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-128) [85d0b16f-2c0c-464f-bbf1-682c062a4871] EVENT_ID: GLUSTER_VOLUME_SNAPSHOT_SCHEDULED(4,134), Snapshots scheduled on volume glustervol0 of cluster NOSS-LD5.

2018-05-14 09:24:11,156Z INFO [org.ovirt.engine.core.bll.gluster.ScheduleGlusterVolumeSnapshotCommand] (default task-128) [85d0b16f-2c0c-464f-bbf1-682c062a4871] Lock freed to object 'EngineLock:{exclusiveLocks='[712da1df-4c11-405a-8fb6-f99aebc185c1=GLUSTER_SNAPSHOT]', sharedLocks=''}'

Could you please provide the engine.log from the time the schedule was setup and including the time the schedule was supposed to run?

The original log file is no longer present, so I removed the old schedule and created a new schedule, as per the instructions above, earlier today. I have therefor attached the engine log from today. The new schedule, which was set to run every 30 minutes, has not produced any snapshots after around 2 hours.

Please let me know if you require any further information.