- configure additional disks (if not yet recognized)
smit -C
Devices - Install/Configure Devices Added After IPL
- add disks to existing VG's
smit -C
System Storage Management - LVM - Volume Groups - Set Characteristics ... - Add a Physical Volume to a Volume Group
- Mirror the volume group,
- Method 1 (traditional), by LV
smit -C
System Storage Management - LVM - Logical Volumes - Set Characteristics ... - Add a Copy to a Logical Volume
selection list via F4 key. (for rootvg the LVs hd6,hd8,hd4,hd2,hd9var,hd3,hd1,... have to be selected, unfortunately one after the other separately. hd5 must not be mirrored this way) Fill the following entries and submit:
NEW TOTAL number of logical partition 2
SYNCHRONIZE the data in the new yes
logical partition copies?
Be patient, this might take some time because data has to be copied to the mirror disk.
For a rootvg (only) the mirror copy must be made bootable
mklv -y hd51 -t boot -a e rootvg 2 hdiskx
bosboot -a -l /dev/hd51 -d /dev/hdiskx
bootlist -m normal hdisky hdiskx
where hdiskx is the additional physical volume holding the mirror and hdisky the original (x,y = 0..n )
- Method 2 (new, faster), by VG
smitty
System Storage Management - LVM - Logical Volumes - Volume Groups - Mirror a Volume Group
PHYSICAL VOLUME names [hdiskx]
Number of COPIES 2
Be patient, this might take some time because data has to be copied to the mirror disk. As suggested, for a rootvg (only) the mirror copy must be made bootable
bosboot -a -l /dev/hd5 -d /dev/hdiskx
bosboot -a -l /dev/hd5 -d /dev/hdisky
bootlist -m normal hdisky hdiskx
- Switch off the disk quorum for the volume group.
smit -C
System Storage Management - Volume Groups - Set Characteristics ... - Change a Volume Group
selection list via F4 key. Fill the following entries (example for tkrvg) and submit.
* VOLUME GROUP name tkrvg
* Activate volume group AUTOMATICALLY yes +
at system restart?
* A QUORUM of disks required to keep the volume no +
group on-line ?
- Ensure synchronization of mirror and original, e.g.:
syncvg -v rootvg
syncvg -v tkrvg
allway2
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