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On Solaris 10 If I install using ZFS root on only one drive is there a way to add another drive as a mirror later? Sorry if this was discussed already. I searched the archives and couldn''t find the answer. Thank you.

Hi list, My zfs write performance is poor and need your help. I create zpool with 2 raidz1. When the space is to be used up, I add 2 another raidz1 to extend the zpool. After some days, the zpool is almost full, I remove some old data. But now, as show below, the first 2 raidz1 vdev usage is about 78% and the last 2 raidz1 vdev usage is about 93%. I have line in /etc/system set

I seem to have managed to end up with a pool that is confused abut its children disks. The pool is faulted with corrupt metadata: pool: d state: FAULTED status: The pool metadata is corrupted and the pool cannot be opened. action: Destroy and re-create the pool from a backup source. see: http://illumos.org/msg/ZFS-8000-72 scan: none requested config: NAME STATE

Well this is a new one.... Illumos/Openindiana let me add a device as a hot spare that evidently has a different sector alignment than all of the other drives in the array. So now I''m at the point that I /need/ a hot spare and it doesn''t look like I have it. And, worse, the other spares I have are all the same model as said hot spare. Is there anything I can do with this or