topic Re: dstroyed lun with vm in it in ONTAP Discussions

dstroyed lun with vm in it

TDUBB1234 — Thu, 05 Jun 2025 06:18:10 GMT

is it possible to restore a lun with a vm in it. I dont have a backup. could it be stored in a snapshot or something? any chance?

Re: dstroyed lun with vm in it

sharmas — Thu, 27 Sep 2012 20:56:55 GMT

Only if you had snapshot copies configured for the Volume which contained the LUN and those have not been deleted. Which tool did you use to delete the LUN?

Re: dstroyed lun with vm in it

TDUBB1234 — Thu, 27 Sep 2012 21:12:59 GMT

it as via command line.

vol offline

vol destroy

Re: dstroyed lun with vm in it

sharmas — Thu, 27 Sep 2012 21:18:20 GMT

Unfortunately there is no way to recover from that except an external backup. I assume you don;t have aggregate snapshot copies and even if you do, you don't want to restore the complete aggregate.

Re: dstroyed lun with vm in it

scottgelb — Thu, 27 Sep 2012 21:33:24 GMT

Good point that there can be an aggr snapshot that could get the data back. In a similar case we had an aggr snap at a customer and were lucky to have enough disk to create a new aggr... then ran "aggr copy -s" to copy the snapshot version of the aggregate to the new aggregate... then after were able to snapmirror the volume back from the temporary aggregate used for restore. If only "snap restore -A" had a "-t file" option... a flexvol in an aggr is like a file in a flexvol so would be really nice to have but no option...but aggr copy can be useful to recover if there is an aggr snap.

Run "snap list -A aggrname" and see if any aggr snaps...if there is a snapshot before the volume delete, I would turn off the aggr snap scheduler and increase the aggr snap reserve just to preserve it long enough to copy so it doesn't autodelete.

Re: dstroyed lun with vm in it

CCOLEMAN_ — Tue, 02 Oct 2012 19:29:21 GMT

Scott might be saving another life here, I rarely see anyone turn off aggr snapshots, so there is a good chance you have one.

Re: dstroyed lun with vm in it

martin_fisher — Tue, 02 Oct 2012 19:59:05 GMT

There may be aggr snap that you could use as previously stated, however I would urgently check the snap list of the aggr and quickly turn off or change the aggr snap schedule, as these generally are deleted after 1-2 days max.

Amend the schedule if possible, so the snap is not auto deleted. HTH. Good Luck.

Re: dstroyed lun with vm in it

CCOLEMAN_ — Tue, 02 Oct 2012 20:01:21 GMT

Another excellent point...hope he reads this in time.

Re: dstroyed lun with vm in it

TDUBB1234 — Tue, 02 Oct 2012 20:02:46 GMT

snap reserve -A shows

so I dont have anything?

Re: dstroyed lun with vm in it

martin_fisher — Tue, 02 Oct 2012 20:07:58 GMT

What does the snap list for the affected aggr show, if you are able to post the info.

Re: dstroyed lun with vm in it

scottgelb — Tue, 02 Oct 2012 20:11:11 GMT

Not likely. If scheduled they would autodelete with no reserve

Sent from my iPhone 5

Re: dstroyed lun with vm in it

TDUBB1234 — Tue, 02 Oct 2012 20:11:11 GMT

it says no snapshot exists

Re: dstroyed lun with vm in it

martin_fisher — Tue, 02 Oct 2012 20:24:42 GMT

The snaps, if they existed, are gone. You wont be able to restore the LUN from the aggr.