Replace Disk (PV/VG/LV)

[Laurent Paumier]

Hello,
I must replace a disk on a HP-UX Name B.11.00 U 9000/800.
The disk is the c7t1d0.
It's a member of the PVGroup PVG1B. This PVG1B is member of the unique VG VG01.
Some logical volumes are stale. (Volumes integrating c7t1d0). LVOL stale have a mirror copie.

After having replaced the disk, which are the operations to be made ? pvXXX, vgXXX, lvXXX ?

Thank you very much.

# vgdisplay -v
--- Volume groups ---
VG Name /dev/vg01
...
Total PVG 4
Total Spare PVs 0
Total Spare PVs in use 0

--- Logical volumes ---
LV Name /dev/vg01/lvol1
LV Status available/syncd
...
Used PV 2

LV Name /dev/vg01/lvol2
LV Status available/stale
...
Used PV 20

LV Name /dev/vg01/lvol3
LV Status available/stale
...
Used PV 20

--- Physical volume groups ---
PVG Name PVG1
...
PVG Name PVG1b
PV Name /dev/dsk/c7t0d0
PV Name /dev/dsk/c7t1d0
PV Name /dev/dsk/c7t2d0
PV Name /dev/dsk/c7t3d0
PV Name /dev/dsk/c7t4d0
PV Name /dev/dsk/c7t5d0
PV Name /dev/dsk/c7t6d0
PV Name /dev/dsk/c7t7d0
PV Name /dev/dsk/c7t8d0
PV Name /dev/dsk/c7t9d0

# lvdisplay /dev/vg01/lvol2
--- Logical volumes ---
LV Name /dev/vg01/lvol2
VG Name /dev/vg01
.
LV Status available/stale
Mirror copies 1
Consistency Recovery MWC
Schedule parallel
...
Stripes 0
Stripe Size (Kbytes) 0
Bad block on
Allocation PVG-strict/distributed

[Devender Khatana · Accepted solution]

Hi,

Replace the disk and add another disk at the same ID/controller so that the device file is same and obviously the disk size also should be same only.

#vgcfgrestore -n /dev/vg01 /dev/rdsk/c7t1d0
#vgsync vg01

This should be able to do this.

Also have a lokk at this disk-replacement guide
http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

HTH,
Devender

[Arunvijai_4]

Hello,

Check these threads for more information..

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=763059
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=124025

-Arun

[Laurent Paumier]

Thanks for the answer and the pdf. ;)

[Senthil Kumar .A_1]

Hi,

Devender reply is spot on.

Just a point adder, in case you have added the disk to different scsi controller or its target ID was different, and the system recognizes it as a differnt device file(say c8t2d0), just do the following

vgcfgrestore -n /dev/vg01 -o /dev/rdsk/c7t1d0 /dev/rdsk/c8t2d0

Then syncronize the mirror,

vgsync vg01

The document which devender linked in the previous response, is indeed best, that could help you in such situations.

Regards,
Senthil Kumar .A

[Ajitkumar Rane]

Laurent,

As already suggested in the previous reply to do a vgcfgrestore, just an addon to it.

Preferably, the volume group should be made unavailable before executing vgcfgrestore by executing the command

vgchange -a n vg01

OR


Force to restore the LVM configuration data when volume group is still active
vgcfgrestore -R -n /dev/vg01 /dev/rdsk/c7t1d0


Rgds,

Ajit