On Sat, Jun 7, 2008 at 4:13 AM, Mario Goebbels <me@xxxxxxxxxxx> wrote:
>> c1t5d0 was part of a mirror but with c1t4d0 removed it now appears as
>> a single drive. Is there a way to recover from this by recreating the
>> mirror with c1t4d0?
> Detaching a drive from a two-way mirror effectively breaks it up and
> turns it into a single drive. That's normal. Just attach it back to
> c1t5d0 and it'll become a mirror again.
> Retry your experiment by detaching a drive from the RAID-Z array and
> you'll see what you were expecting.
Thank you Tomas and Mario. I was able to recreate the mirror by reattaching.
It seems that once a vdev has been added to a pool it is no longer
possible to remove it. Is that right? For example if I created a pool
that consisted of 3 single drives there would not be a way to remove a
drive and reduce the number of devices in a pool from 3 to 2. Even if
there is enough space in those 2 remaining drives to hold all the
zfs-discuss mailing list