topic Re: ONTAP 8.3 Aggregate and volumes destroyed. Need to recover data. in Network and Storage Protocols

ONTAP 8.3 Aggregate and volumes destroyed. Need to recover data.

xsalvia — Tue, 01 Oct 2024 10:50:59 GMT

As per decommission process, data aggregate was offline and destroyed issuing the offline and destroy commands.

After a while, due some data retrieval needed, is requested to try to recover,

While issuing the undestroy command:

CLU-CRS::*> aggr undestroy aggr1
"storage aggregate undestroy" is not supported.

As per seen in kb, this is a 7-mode command not matching with anyone in Cluster Mode.

Question is simple: Is there anyway to recover the data?

The disks are unzeroed:

CLU-CRS::*> storage aggregate show-spare-disks

Original Owner: CLU-CRS-01
Pool0
Partitioned Spares
Local Local
Data Root Physical
Disk Type RPM Checksum Usable Usable Size Status
--------------------------- ----- ------ -------------- -------- -------- -------- --------
1.0.0 SAS 10000 block 971.9GB 0B 1.09TB not zeroed
1.0.1 SAS 10000 block 971.9GB 0B 1.09TB not zeroed
1.0.2 SAS 10000 block 971.9GB 0B 1.09TB not zeroed
1.0.3 SAS 10000 block 971.9GB 0B 1.09TB not zeroed
1.0.4 SAS 10000 block 971.9GB 0B 1.09TB zeroed
1.0.5 SAS 10000 block 971.9GB 0B 1.09TB not zeroed
1.0.6 SAS 10000 block 971.9GB 0B 1.09TB not zeroed
1.0.7 SAS 10000 block 971.9GB 143.7GB 1.09TB not zeroed
1.0.8 SAS 10000 block 971.9GB 0B 1.09TB not zeroed
1.0.9 SAS 10000 block 971.9GB 0B 1.09TB not zeroed
1.0.10 SAS 10000 block 971.9GB 0B 1.09TB not zeroed
1.0.11 SAS 10000 block 971.9GB 0B 1.09TB not zeroed

If trying to create new aggregate , the system is warning about if done, the disks will be zeroed before to be added

Any hint?

Re: ONTAP 8.3 Aggregate and volumes destroyed. Need to recover data.

Gmox — Wed, 02 Oct 2024 06:31:37 GMT

Hello,

Have you try to do it in maintenance mode?

I should have a 8.3 in my lab, I will check if i found something.

Re: ONTAP 8.3 Aggregate and volumes destroyed. Need to recover data.

xsalvia — Wed, 02 Oct 2024 06:51:27 GMT

Thanks for your reply, GMox.

I didn't tried yet. I have a chance to try it in short time (this Fri), and let you know what happen

Re: ONTAP 8.3 Aggregate and volumes destroyed. Need to recover data.

darr613 — Thu, 03 Oct 2024 05:57:25 GMT

Hello Xsalvia,

Protection against accidental volume deletion
Starting with Data ONTAP 8.3, new default functionality is available to aid in the recovery of
accidentally deleted FlexVol volumes.
After all nodes in the cluster are running clustered Data ONTAP 8.3 or later, a volume delete
request against a volume that has type RW or DP (as seen in volume show command output) causes
that volume to be moved to a partially deleted state. By default, it is retained in a recovery queue for
at least 12 hours before being fully deleted.

I know is a long shot but use the diag mode and check in the recovery queue

vol recovery-queue show

https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/How_to_use_the_Volume_Recovery_Queue

Re: ONTAP 8.3 Aggregate and volumes destroyed. Need to recover data.

xsalvia — Thu, 03 Oct 2024 08:55:10 GMT

Thanks for your reply. I'll check on lab and see results.

With kind regards

Re: ONTAP 8.3 Aggregate and volumes destroyed. Need to recover data.

xsalvia — Tue, 15 Oct 2024 15:33:11 GMT

Just for closing this question, could undestroy de Aggr but actually is just showing under nodeshell.

Netapp support team involvement is required to make it visible under clustershell and see after if any reqovery queue is available for the deleted volumes.

Thanks all