On Apr 28, 2010, at 8:39 AM, Wolfraider wrote: >> Mirrors are made with vdevs (LUs or disks), not >> pools. However, the >> vdev attached to a mirror must be the same size (or >> nearly so) as the >> original. If the original vdevs are 4TB, then a >> migration to a pool made >> with 1TB vdevs cannot be done by replacing vdevs >> (mirror method). >> -- richard > > Both luns that we are sharing out with comstar are vdevs. It sounds like we > can create the new temporary pool, create a couple new luns the same size as > the old ones and then create mirrors between the two. Wait until it is synced > and break the mirror. This is what we were thinking we could do, just wanted > to make sure.
This can work, and you create make the temporary iSCSI targets as compressed, sparse volumes. If your 100TB of data will squeeze into 40TB, then it is just a matter of time to copy. -- richard ZFS storage and performance consulting at http://www.RichardElling.com ZFS training on deduplication, NexentaStor, and NAS performance Las Vegas, April 29-30, 2010 http://nexenta-vegas.eventbrite.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
