On Tue, Sep 27, 2011 at 08:29:03PM -0400, Edward Ned Harvey wrote: > There is only one way for this to make sense: You did not have mirror-1 in > the first place. You accidentally added 4 & 5 without mirroring.
Not true. 4 & 5 may have been added initially as a mirror, then 5 detached from the mirror and later added as a single drive (rather than reattached to 4 as a mirror again). It can be easy to confuse "add" and "attach" commands. > The only > way to fix it is to (a) add redundancy to both 4 & 5 Yes, attach 2 new disks, one to each of 4 and 5, to turn those vdevs (back) into mirrors. >, or (b) destroy and > recreate the pool, and this time be very careful that you mirror 4&5. Unfortunately, yes, if you can't attach more disks, this is necessary, since it's not currently possible to remove a top-level vdev. -- Dan.
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