Primary boot disk replacement

[Nikee Reddy]

Hello,

We have replaced the corrupted primary boot disk with a good one and booted the system using the alternative disk.

Please let me know whether the following commands work to resync the data and the configuration back on the PRI boot disk:

$ vgcfgrestore â l -n /dev/vg00
$ vgcfgrestore - /dev/vg00 /dev/rdsk/c0t6d0
$ vgchange -a y /dev/vg00
$ vgsync
$ lvsync

Thanks,
Nik

[Pete Randall]

Nikee,

Looks good, though I don't think you need to do both the vgsync and the lvsync - just one or the other.


Pete

[Geoff Wild]

See this post:

http://forums1.itrc.hp.com/service/forums/bizsupport/questionanswer.do?threadId=383446


Rgds...Geoff

[Mel Burslan]

to update your replaced disk and make it bootable again, you will additionally need these commands as well, replace # signs with the designators of your particular, replaced disk.

mkboot /dev/rdsk/c#t#d#
mkboot -a "hpux -lq (;0) /stand/vmunix" /dev/rdsk/c#t#d#
lvlnboot -r /dev/vg00/lvol1
lvlnboot -s /dev/vg00/lvol2

[Sundar_7 · Accepted solution]

Hi Nik,

Nope, you are missing couple of very important commands, mkboot.

With LVM mirroring, the LIF volumes of the disks are not mirrored.

So you have to include mkboot commands as well

# vgcfgrestore -n /dev/vg00 /dev/rdsk/c0t6d0
# mkboot /dev/rdsk/c0t6d0
# mkboot -a "hpux -lq" /dev/rdsk/c0t6d0
# vgchange -a y /dev/vg00
# vgsync /dev/vg00
# lvlnboot -R

if I have enough time, I would reboot the system with the primary boot disk that just got replaced.

Also note these commands can only be executed by root and not by "$" user :-)

[Victor BERRIDGE]

And Assuming you have onlinediags installed I would also :
#mkboot -b updatediaglif -p ISL -p HPUX -p LABEL -p AUTO /dev/rdsk/c0t6d0

Dont forget to setboot...

All the best
Victor

[Pete Randall]

Nikee,

I missed the mkboot part - sorry! But I will point out that the lvlnboot steps are un-necessary as shown in this quote from the Software Recovery Cookbook:

"4. Write content of LABEL file, i.e set root, boot, swap and dump device: NOTE:This step can be omitted if you replace a failed mirror disk. Then this information has already been restored by vgcfgrestore. To be sure to have the latest information on the disk just do the following steps."


Pete