mirror not from root disk

[Rob O'Connor]

Hello:
We are getting new machine.
I just need to verify mirroring syntax for non root disk. The disks does not have to be bootable.

pvcreate -f /dev/dsk/cxtxdx
vgextend -f /dev/vg04 /dev/dsk/cxtxdx
lvextend -m 1 /dev/vg04/lvol1 /dev/dsk/cxtxdx

Thanks,
Henry

[Steven E. Protter]

pvdisplay -v /dev/rdsk/cxtxdx | more

for the disk

lvdisplay -v /dev/vg01/lvol1 | more

This will show you the mirrors and what disk they are on.

SEP

[Patrick Wallek · Accepted solution]

Yes, that will work. You will also want to make sure that the LVs are created with the Strict allocation policy. That will prevent you from mirroring to the same disk.

When you create an LV you need to specify the '-s y' switch. Or if the LV is already created you can use lvchange to modify that setting.

[twang]

Your steps are right, but remember to back up LVM configuration information for the volume group you changed, for example
# vgcfgbackup /dev/vg04