On 24.06.09 17:10, Thomas Maier-Komor wrote:
Ben schrieb:
Thomas,
Could you post an example of what you mean (ie commands in the order to use
them)? I've not played with ZFS that much and I don't want to muck my system
up (I have data backed up, but am more concerned about getting myself in a mess
and having to reinstall, thus losing my configurations).
Many thanks for both of your replies,
Ben
I'm not an expert on this, and I haven't tried it, so beware:
1) If the pool you want to expand is not the root pool:
$ zpool export mypool
# now replace one of the disks with a new disk
$ zpool import mypool
# zpool status will show that mypool is in degraded state because of a
missing disk
$ zpool replace mypool replaceddisk
# now the pool will start resilvering
# Once it is done with resilvering:
$ zpool detach mypool <otherdisk>
# now physically replace <otherdisk>
$ zpool replace mypool <otherdisk>
Last command would fail as there would be no longer <otherdisk> in mypool.
Though you can always play with files first (or with VirtualBox etc):
# preparation
mkdir -p /var/tmp/disks/removed
mkfile -n 64m /var/tmp/disks/disk0
mkfile -n 64m /var/tmp/disks/disk1
mkfile -n 128m /var/tmp/disks/bigdisk0
mkfile -n 128m /var/tmp/disks/bigdisk1
zpool create test mirror /var/tmp/disks/disk0 /var/tmp/disks/disk1
zpool list test
# let's start by making sure there's no latent errors:
zpool scrub test
while zpool status -v test | grep % ; do sleep 1; done
zpool status -v test
zpool export test
mv /var/tmp/disks/disk0 /var/tmp/disks/removed/disk0
# you don't need '-d /path' with real disks
zpool import -d /var/tmp/disks test
zpool status -v test
# insert new disk
mv /var/tmp/disks/bigdisk0 /var/tmp/disks/disk0
zpool replace test /var/tmp/disks/disk0
while zpool status -v test | grep % ; do sleep 1; done
zpool status -v test
# make sure that resilvering is complete
zpool detach test /var/tmp/disks/disk1
mv /var/tmp/disks/disk1 /var/tmp/disks/removed/disk1
# insert new disk
mv /var/tmp/disks/bigdisk1 /var/tmp/disks/disk1
zpool attach test /var/tmp/disks/disk0 /var/tmp/disks/disk1
while zpool status -v test | grep % ; do sleep 1; done
zpool status -v test
zpool list test
hth,
victor
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