[zfs-discuss] root pool mirror problems

Cindy Swearingen
2010-05-20T14:31:52Z

Hi Roi,

You need equivalent sized disks for a mirrored pool. When you attempt to
attach a disk that is too small, you will see a message similar to the
following:

cannot attach c1t3d0 to c1t2d0: device is too small

In general, an "I/O error" message means that the partition slice is
not
available or ZFS is having trouble accessing the disk so you might have
multiple issues to resolve.

Review the ZFS troubleshooting wiki for info on resolving the I/O error,
here:

http://www.solarisinternals.com/wiki/index.php/ZFS_Troubleshooting_Guide

Thanks,

Cindy

On 05/20/10 02:39, roi shidlovsky wrote:
> hi.
> i am trying to attach a mirror disk to my root pool. if the two disk are
the same size.. it all works fine, but if the two disks are with different size
(8GB and 7.5GB) i get a "I/O error" on the attach command.