On May 25, 2010, at 7:46 AM, thomas wrote:

> Is there a best practice on keeping a backup of the zpool.cache file?

Same as anything else, but a little bit easier because you can
snapshot the root pool.  Thus far, the only real use for the backups
is for a manual recovery of missing top-level vdevs -- a rare event.

> Is it possible?

Yes

> Does it change with changes to vdevs?

Yes
 -- richard

-- 
ZFS and NexentaStor training, Rotterdam, July 13-15, 2010
http://nexenta-rotterdam.eventbrite.com/






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