We have 2 volumes which are limited to keep a maximum of 2 snapshots, however these go up to 8 or 9 snapshots. We can see the 2 scheduled snapshots but also the other snapshots taken at various times throughout the day. The snapshot times do not match with the scheduled times in ASM on the hosts.
The snapshot policy is not set to 'Borrow snapshot space as needed' and set to 'Delete oldest snapshot'.
We have upgraded ASM on the hosts to Version 184.108.40.20628, and the storage array firmware to version 8.1.10 (R436828) hoping this would resolve the issue but it hasn't.
Any help would be appreciated?
The scheduler will only trim snapshots taken by that schedule. So for example if that's a once / day schedule and you have another running somewhere doing every 2 hours, the 1/day schedule won't trim any of the 2 hr snapshots. Only if you run out of snapshot reserve would one schedule prune the oldest snapshots to free up space.
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That makes sense, the scheduled snapshots never increase more than 2. The volume is used as a cluster shared volume with multiple Hyper-v VM's. Is there anyway to find out where these other snapshots come from? They don't have a schedule name next to them.
I would first check the Group Schedules to see if someone created a a local schedule. If it com,es externally I would expect a login event at the snapshot creation time. It will show you what IP address is came from.