Hi there,
On Mon, 2007-04-02 at 00:37 -0700, homerun wrote:
> Is it possible to convert live 3 disks zpool from raidz to raidz2
Unfortunately not - you'd need to backup your data, destroy the pool,
create the new pool and restore your data.
> And is it possible to add 1 new disk to raidz configuration
> without backups and recreating zpool from cratch.
You can add a disk to a raidz configuration, but then that makes a pool
containing 1 raidz + 1 additional disk in a dynamic stripe configuration
(which ZFS will warn you about, since you have different fault tolerance
then) eg.
# mkfile 64m 1 2 3 4
# zpool create mypool raidz `pwd`/1 `pwd`/2 `pwd`/3
# zpool status -v mypool
pool: mypool
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
mypool ONLINE 0 0 0
raidz1 ONLINE 0 0 0
/tmp/1 ONLINE 0 0 0
/tmp/2 ONLINE 0 0 0
/tmp/3 ONLINE 0 0 0
errors: No known data errors
# zpool add mypool `pwd`/4
invalid vdev specification
use '-f' to override the following errors:
mismatched replication level: pool uses raidz and new vdev is file
# zpool add -f mypool `pwd`/4
# zpool status -v mypool
pool: mypool
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
mypool ONLINE 0 0 0
raidz1 ONLINE 0 0 0
/tmp/1 ONLINE 0 0 0
/tmp/2 ONLINE 0 0 0
/tmp/3 ONLINE 0 0 0
/tmp/4 ONLINE 0 0 0
errors: No known data errors
#
cheers,
tim
--
Tim Foster, Sun Microsystems Inc, Solaris Engineering Ops
http://blogs.sun.com/timf
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