Replacing boot disk of VPars

[Yashwant]

Hi Guys


kindly guide us whethere following steps for replacing boot disk are correct.



1.Detach the PV from LVM usage
# pvchange -a n /dev/dsk/c0t0d0
2.Inform FE to replace the disk
3.Check the status of the disk
# ioscan -fnC disk
4.Restore VG configuration in to the new disk
# vgcfgrestore -n /dev/vg00 /dev/rdsk/c0t0d0
5.update the boot configuration
# mkboot -l /dev/rdsk/c0t0d0
# mkboot -a "hpux -lq" /dev/rdsk/c0t0d0
6.Resync the mirror
# vgchange -a y vg00
7. Update BDRA
# lvlnboot -R vg00
8. Check the boot configuration
# lvlnboot –v
9. Check all the mirrors in vg are sync.
# vgdisplay -v vg00 |egrep -i "lv name|lv status"


My only querry whether after running 4th step do we need to run 5th step or 4th step will take care of all things

[Johnson Punniyalingam]

Refer to HP official document (replacing Boot disks)


http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad_WP.pdf

[Kapil Jha · Accepted solution]

1)pvchange -a N /dev/dsk/c0t0d0

Step 4 and 5
vgcfgrestore would only restore VG configuration and not boot configuration, you would have to do it.

Rest everything seems to be fine.

BR,
Kapil+

[Yashwant]

Thanks kapil..


small query again.. do we need to run

#vgsync vg00 command after

# vgchange -a y vg00 ??

[Kapil Jha]

No need,

When a volume group is activated, LVM performs the necessary mirror consistency recovery for each logical volume in the volume group based on the state of the Mirror Write Cache and Mirror Consistency Recovery.

Se man page.

BR,
Kapil+