On Wed, Jan 26, 2011 at 8:58 PM, Dan Nelson <dnel...@allantgroup.com> wrote: > In the last episode (Jan 26), Christer Solskogen said: >> On Wed, Jan 26, 2011 at 9:42 AM, O. Hartmann wrote: >> > My question is: is it possible to migrate the two-disk pool without data >> > loss into a mirrored pool by adding the one 2TB-disk? >> >> No, you cant create a two-way mirror of three disks with ZFS. The only way >> of doing what you want by creating a gmirror (or by hardware raid) of the >> two 1TB disks. > > You can, if you partition the 2tb disk into two smaller volumes, each the > same size as one of the 1tb disks, then add one of those as a mirror of each > original disk. You'll end up with two mirrored vdevs in the pool. > Performance probably won't be as good as a real mirror, though, since zfs > doesn't know that two of its physical disks share a spindle. >
Rememer that he also asked to do this without data loss. As far as I know you cant remove devices from a vdev. If he is willing to accept data loss there are a lots of ways of doing it. -- chs, _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
