On Tue, April 27, 2010 10:38, Bob Friesenhahn wrote: > On Tue, 27 Apr 2010, David Dyer-Bennet wrote: >> >> Hey, you know what might be helpful? Being able to add redundancy to a >> raid vdev. Being able to go from RAIDZ2 to RAIDZ3 by adding another >> drive >> of suitable size. Also being able to go the other way. This lets you >> do >> the trick of temporarily adding redundancy to a vdev while swapping out >> devices one at a time to eventually upgrade the size (since you're >> deliberately creating a fault situation, increasing redundancy before >> you >> do it makes loads of sense!). > > You can already replace one drive with another (zpool replace) so as > long as there is space for the new drive, it is not necessary to > degrade the array and lose redundancy while replacing a device. As > long as you can physically add a drive to the system (even > temporarily) it is not necessary to deliberately create a fault > situation.
I don't think I understand your scenario here. The docs online at <http://docs.sun.com/app/docs/doc/819-5461/gazgd?a=view> describe uses of zpool replace that DO run the array degraded for a while, and don't seem to mention any other. Could you be more detailed? -- David Dyer-Bennet, d...@dd-b.net; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
