Janos Dohanics <we...@3dresearch.com>, 2012-02-08 19:42 (+0100):
4. Also, with GPT, one has to be in single user mode to synchronize
disks - correct?
I think the guide you linked to:
http://blather.michaelwlucas.com/archives/1071
meant that you have to be in single user mode until you have edited
/etc/fstab to point to the mirror, otherwise you wouldn't boot with root
on the mirror. The synchronization between the disks works fine in
multi-user mode as well.
I have two 2 TiB disks in gmirror set up just like that. Synchronization
was done running in multi-user.