On 11/10/10 04:11 PM, Peter Taps wrote:
Folks,
I am trying to understand if there is a way to increase the capacity of a
root-vdev. After reading zpool man pages, the following is what I understand:
1. If you add a new disk by using "zpool add," this disk gets added as a new
root-vdev. The existing root-vdevs are not changed.
The root device can only be a single drive or a mirror.
2. You can also add a new disk by using "zpool attach" on any existing disk of
the pool. However, the existing disk cannot be part of a raidz vdev. Also, if the
existing disk is part of a mirror, all we are doing is increasing redundancy but not
growing the capacity of the vdev.
The only option to grow a root-vdev seems to be to use "zpool replace" and
replace an existing disk with a bigger disk.\
The easiest way to grow the root pool is to mirror to a bigger drive and
then detach the original. Don't forget to install grub on the new drive.
--
Ian.
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