[OpenIndiana-discuss] When adding a mirror disk to rpool

[thorsten.heit at vkb.de]

> On 22/11/10 02:18 PM, Harry Putnam wrote:
> > I'm about to create a mirror to rpool that currently is a single
> > disk.  I remember it being somewhat more involved than any other pool
> > for adding a mirror.
> >
> > Involving the boot bits and running grub... maybe other stuff as well.
> >
> > I wondered if anyone has a URL where I might read about the procedure,
> > or failing that can anyone provide a general outline of steps that
> > need to be taken.

http://wikis.sun.com/display/OpenSolarisInfo/How+to+Create+a+Mirrored+ZFS+Root+Pool


> # /usr/sbin/zpool attach rpool (currentdev) (newdev)
> # /usr/sbin/installgrub /boot/grub/stage1 \
>    /boot/grub/stage2 /dev/rdsk/(newdev)
> 
> 
> Note that (newdev) must be a slice.
> 
> You might get an error message from zpool about slice 2 (s2)
> overlapping newdev - assuming that you have setup your newdev
> slicing correctly, you can re-issue the zpool command thusly:
> 
> # /usr/sbin/zpool attach -f rpool (currentdev) (newdev)

Additional note:
A mirrored root pool doesn't work with EFI labeled disks.


Regards

Thorsten