topic Re: Snaplock Compliance aggregate in ONTAP Discussions

Snaplock Compliance aggregate

netapping — Wed, 04 Jun 2025 15:08:46 GMT

I made snaplock compliance aggregate with ONTAP 9.1 ,and create volume in the compliance aggregate.
Then I halted ONTAP to initialize all disks using boot menu No.4 , but it couldn't be initialized.
All aggrigate including compliance aggregate is still remained.
Root volume is initialized yet.

I'd like to know How the compliance aggregate disks are initialized , and is it possible to reuse them?

Disk 0b.00.10 is part of a SnapLock Compliance volume. It will not be overwritten or formatte
Disk 0a.00.9 is part of a SnapLock Compliance volume. It will not be overwritten or formatted

The document "Technical FAQ SnapLock ONTAP9.0 and 9.1" says

"When all the WORM data has expired in a SnapLock Compliance volume, the volume can be
deleted."
"SnapLock flexible volumes on an aggregate are deleted, the aggregate can also be delete"

Technical FAQ
SnapLock
ONTAP 9.0 and 9.1
Siddharth Agrawal, NetApp
Version 1.1

Some volumes are still remaied on the disks and I can't delete them.

Thanks,

Re: Snaplock Compliance aggregate

Sahana — Wed, 03 May 2017 08:35:35 GMT

Hi,

If you do not set the retention time explicitly before committing a Compliance-mode file to the WORM state, and you do not modify the defaults, the file will be retained for 30 years.

Ref page 12: https://library.netapp.com/ecm/ecm_get_file/ECMLP2507748

Re: Snaplock Compliance aggregate

netapping — Fri, 05 May 2017 09:44:02 GMT

I set the max retention time 1 minute before createting test files. And all files had been expired before hating .

But root volume was initialized, while compliance aggregate was not .

I don't know how to delete volumes and the compliance aggregate without root volume .

If the disks woulb be set to other node, "aggr show" results no entry . volumes are not shown either.

I would like to know how to delte them. Is it possible or not ?

thanks,

Re: Snaplock Compliance aggregate

skneo — Fri, 05 May 2017 11:20:08 GMT

Is the delted compl volume shown under "volume recovery-queue show" ?

Re: Snaplock Compliance aggregate

Sahana — Mon, 08 May 2017 02:38:18 GMT

Hi,

Refer page 28 on the link: https://library.netapp.com/ecm/ecm_get_file/ECMLP2507748

Re: Snaplock Compliance aggregate

netapping — Tue, 09 May 2017 23:15:11 GMT

No, Initialized Volume is SVM's root volume in the normal aggregate.

Because it is impossible to create SVM's root volume in the compliance aggregate,

I made it in the normal aggregate.

Re: Snaplock Compliance aggregate

netapping — Tue, 09 May 2017 23:25:00 GMT

I can't do it in the comand line.

Because SVM was deleted when initializing a normal data aggregate.

I didn't make an enterprise aggregate but a compliance aggregate.

And the priviledged delete is performed only in Enterprise mode according to that reference In the page 26, you know.

Thanks,

Re: Snaplock Compliance aggregate

AlexDawson — Mon, 15 May 2017 03:25:37 GMT

We make it very difficult to remove snaplock data - on purpose.

Assuming the system is not under support or in production, at this point I would suggest pulling the disks containing the aggr out of the system and zeroing them on a linux system (ensuring you use correct block sizes), and you should be able to re-use them after doing a zero spares. Never done it myself, but I know we check for a certain signature on the disks to determine if they are snaplock.

Re: Snaplock Compliance aggregate

netapping — Tue, 16 May 2017 03:02:43 GMT

Pulling the disks containing the aggr out of the system is worth considering .

I’ｍ not certain this method will be successfull ,

I would like to try it after the people interested would agree to this proposal.

thanks,

Re: Snaplock Compliance aggregate

netapping — Thu, 08 Jun 2017 03:29:19 GMT

I tried zeroing disks on the server(IBM system x 3650) using erasing tool ,and it failed.
All process of zeroing were finished with no-fatal errors ,but the following scsi error occured.
---
* fail scsi Disk IBM ServerRAID MF5015 2.12 837GiB(898GB) 001709a72368e8c820d0251F04b
---

But this trouble was solved by other way.
Compliance aggregate was deleted with following ontap command .

::*>volume lost-found show
::*>volume lost-found delete -node "nodename" -dsid "DSID"
::*>run -node "nodename" aggr offline "aggr name"
::*>aggr remove-stale-record -aggregate "aggr name" -nodename "nodename"

off course it is necessary every files in compliance volumes are expired,now all of the drives are able to be reused .

In case some drive is not expired, it's impossible to be reused.

thanks,

Re: Snaplock Compliance aggregate

AlexDawson — Thu, 08 Jun 2017 06:53:02 GMT

Thanks for the update - glad you got it sorted out!