Suppose the requirements for storage shrink ( it can happen ) is it
possible to remove a mirror set from a zpool?
Given this :
# zpool status array03
pool: array03
state: ONLINE
status: The pool is formatted using an older on-disk format. The pool can
still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'. Once this is done, the
pool will no longer be accessible on older software versions.
scrub: resilver completed after 0h41m with 0 errors on Sat Jan 9
22:54:11 2010
config:
NAME STATE READ WRITE CKSUM
array03 ONLINE 0 0 0
mirror ONLINE 0 0 0
c2t16d0 ONLINE 0 0 0
c5t0d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c5t1d0 ONLINE 0 0 0
c2t17d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c5t2d0 ONLINE 0 0 0
c2t18d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c2t20d0 ONLINE 0 0 0
c5t4d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c2t21d0 ONLINE 0 0 0
c5t6d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c2t19d0 ONLINE 0 0 0
c5t5d0 ONLINE 0 0 0
spares
c2t22d0 AVAIL
errors: No known data errors
Suppose I want to power down the disks c2t19d0 and c5t5d0 because they are
not needed. One can easily picture a thumper with many disks unused and
see reasons why one would want to power off disks.
--
Dennis
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