OK I tried these steps with a small 20g volume. Unmount the source lun, do final snapmirror update, break mirror, set fs_size_fixed on. Now When I try to connect the new lun via snapdrive on the destination, I get (after the prompt for SFSR) the following error message:
Unable to connect disk
Failure in checking policies
Error: unable to find a snapshot containing a consistent virtual disk to restore
This happens on both snapdrive 4.1 and 3.1.1R1. What am I missing?
Thanks
Suresh
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From: Leeds, Daniel [mailto:dleeds@edmunds.com] Sent: Thursday, April 26, 2007 3:26 PM To: Suresh Rajagopalan; toasters@mathworks.com Subject: RE: Data migration
snapmirror is what you want. you can set it up anytime prior to the migration and let it run on a schedule or manually to build the initial baseline. after that you just do a snapmirror update to keep it in sync.
we have done this so many times it's second nature. quite simply:
1) create target volume and initialize snapmirror relationship to source while lun is live and serving data 2) setup maintenance window and take filesystem/lun offline 3) perform final snapmirror update 4) break snapmirror relationship and bring new lun/volume online 5) mount new lun/filesystem and serve up data
snapmirror is a really handy product :)
-- Daniel Leeds Senior Systems Administrator Edmunds.com
-----Original Message----- From: owner-toasters@mathworks.com on behalf of Suresh Rajagopalan Sent: Thu 4/26/2007 3:02 PM To: toasters@mathworks.com Subject: Data migration
I need to migrate a 1.4Tb lun from one filer to another with minimal downtime (< 30 mins). So clearly some copying of data has to be done prior to the actual move.
Would snapmirror or flexclone be the most appropriate for this? I'm not sure how I would get a consistent copy of the lun over to the other filer. This is not a database, the lun contains flat files on NTFS.
Thanks
Suresh