It looks like Matt has a solution that should work. Additionally, if this is a unix system, on a high level, you can parse the output and use 'tail' to establish the eligible snapshot for deletion.
On another note, make sure that you are 100% sure that the switch to 'hot-backup' mode was successful and completed before starting the snapshot process. Also be 100% sure that the snapshot has completed before coming out of 'hot-backup' mode. Yes, I've seen situations before where these checks and balances would have been helpful. Also make sure that these checks are written out to a log file in case you ever need to go back to troubleshoot.
Good luck
Stetson M. Webster Managed Services Engineering NetApp Global Services - Southeast District
919.250.0052 Mobile Stetson.Webster@netapp.com www.netapp.com http://www.netapp.com/
________________________________
From: Leeds, Daniel [mailto:dleeds@edmunds.com] Sent: Tuesday, August 05, 2008 12:51 PM To: Daniel Keisling; Stephen C. Losen Cc: toasters@mathworks.com Subject: RE: Automatically delete snapshots based on number and not space availability
snapvault.
snapvault snap sched myvol sv_daily 5@-
say its oracle on the host:
backup script puts instance in hotbackup mode snapvault snap create myvol sv_daily backup script takes instance out of hotbackup mode
(cold backup shutdown/startup same way)
it will automatically keep 5 snapshots rotate the oldest and the - allows you to take the snap anytime via the script
-- Daniel Leeds Manager, Storage Operations Edmunds, Inc. 1620 26th Street, Suite 400 South Santa Monica, CA 90404
310-309-4999 desk 310-430-0536 cell
-----Original Message----- From: owner-toasters@mathworks.com on behalf of Daniel Keisling Sent: Tue 8/5/2008 9:38 AM To: Stephen C. Losen Cc: toasters@mathworks.com Subject: RE: Automatically delete snapshots based on number and not space availability
Everyone is assuming that the NetApp will be taking the snapshots, which is incorrect. I must do the snapshots from the host side in order to quiesce the filesystem (actually, the database). My databases run on LUNs over FCP. I do not want to try and coordinate the databases on the host being quiesced at the same time the filer will automatically take the snapshot.
Daniel
-----Original Message----- From: Stephen C. Losen [mailto:scl@sasha.acc.Virginia.EDU] Sent: Tuesday, August 05, 2008 11:01 AM To: Daniel Keisling Cc: toasters@mathworks.com Subject: Re: Automatically delete snapshots based on number and not space availability
Greetings,
I take a daily snapshots (named ss-YYYYMMDDHHmm) of several volumes on my filers. I would like to automatically delete the oldest snapshot (assuming it's not busy) when a certain number of snapshots are
present
in the volume (ie, only keep the latest 3 snapshots). Is this
possible?
If not, does anyone have any scripts where it can be done from a host?
TIA,
Daniel
Any reason you can't use the "snap sched" command for this?
snap sched volname 0 3 0
This takes a snapshot at midnight and keeps at most 3.
If midnight isn't suitable you can configure the hourly option to take one hourly per day and keep 3. Suppose you want 18:00
snap sched volname 0 0 3@18
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
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