Adding a disk to a ZFS pool

I needed to expand a ZFS pool from a single disk to a pair of disks today. To expand my pool named “striped,” I ran zpool with the “add” option, the pool name to add the disk to, and the device to add to the pool:

$ zpool add striped c1d1

Once the disk was added to the pool, it was immediately available for use:

$ zpool status -v

pool: striped
state: ONLINE
scrub: none requested

striped ONLINE 0 0 0
c1d0 ONLINE 0 0 0
c1d1 ONLINE 0 0 0

errors: No known data errors

I used to think Veritas had the easiest method to expand file systems, but I don’t think that is the case anymore. Now if we can just get Sun to allow us remove devices from a pool, and expand the number of columns in a RAIDZ or RAIDZ2 vdev!

This article was posted by Matty on 2006-12-26 20:59:00 -0400 -0400