No common snaps that I know of, but its a good idea.

John Thanks, John stoffel

----- Original Message ----- From: "Page, Jeremy" [jeremy.page@gilbarco.com] Sent: 12/07/2009 03:04 PM PST To: John Stoffel; toasters@mathworks.com Subject: RE: Redoing snapmirror to a destination

I think you can resynch if there are any common snapshots, did you call Netapp?

-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of John Stoffel Sent: Monday, December 07, 2009 5:50 PM To: toasters@mathworks.com Subject: Redoing snapmirror to a destination

Guys,

Do to stupidity on my part, I managed to accidently delete a snapshot on the source side of a snapmirror pair, so that snapmirror can't continue. It's not critical, it's just our tools area, which isn't updated frequently.

So now I want to re-snapmirror, but I want to limit the downtime of the clients on the destination side as much as possible when I switch them to the new re-snapmirrored volume.

Currently, my clients mount east:/vol/tools, so what I'd like to do is:

west> snapmirror store tools rst0a,rst1a

east> vol create tools .... east> vol restrict tools east> snapmirror retrieve tools_new rst0a,rst1a

Now for the tricky part:

east> nfs off east> vol rename tools tools_old east> vol rename tools_new tools east> nfs on east> exportfs -a -v

so that all my clients see (on a read-only volume) is a quick outage or pause in NFS traffic, then they just continue on using tools and such as usual.

Or will I be forced to reboot all of my client machines one by one? Which will be truly truly truly painful...

The general snapmirror update and cleanup of the old volume is trivial. It's limiting the outage to my clients that I worry about.

Thanks, John John Stoffel - Senior Staff Systems Administrator - System LSI Group Toshiba America Electronic Components, Inc. - http://www.toshiba.com/taec john.stoffel@taec.toshiba.com - 508-486-1087

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