AIX altinst_rootvg Post: 303035544

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Operating Systems AIX AIX altinst_rootvg Post 303035544 by Phat on Tuesday 28th of May 2019 04:22:42 AM

05-28-2019

Registered User

AIX altinst_rootvg

Hello,

Our NIM system becomes unresponsive while working. Look like first time that the root disk was missing. I cannot use many commands like lspv, lspath, ... ssh and other services are not operating.

I have rebooted the machine, and I can boot it to AIX, but it's an older AIX version 6.1 and not the current one 7.1

I also see that the OS is booted from hdisk0, while the current OS is booted from hdisk9. But now hdisk9 belongs to altinst_rootvg and varied off.

Look like the boot volume on hdisk9 was corrupted and system turns to the old one on hdisk0 to boot from it.

How can we re-create the boot volume on hdisk9? I tried to boot the system to single user mode on hdisk0 (old OS version), and try the bosboot command on hdisk9, but not success. It says the hd5 is already available in use.

I tried to use synclvodm and it changed my LVs on altinst_rootvg to new ones. Not sure that it just only renames the LV name, I hope it not overwrite the data on the altinst_rootvg.

Code:

# synclvodm -v altinst_rootvg
synclvodm: Physical volume data updated.
0516-530 synclvodm: Logical volume name hd6 changed to pagelv00.
synclvodm: Logical volume pagelv00 updated.
0516-530 synclvodm: Logical volume name hd8 changed to loglv02.
0516-712 synclvodm: The chlv succeeded, however chfs must now be
        run on every filesystem which references the old log name hd8.
synclvodm: Logical volume loglv02 updated.
0516-530 synclvodm: Logical volume name hd4 changed to fslv01.
synclvodm: Logical volume fslv01 updated.
0516-530 synclvodm: Logical volume name hd2 changed to fslv02.
synclvodm: Logical volume fslv02 updated.
0516-530 synclvodm: Logical volume name hd9var changed to fslv03.
synclvodm: Logical volume fslv03 updated.
0516-530 synclvodm: Logical volume name hd3 changed to fslv04.
synclvodm: Logical volume fslv04 updated.
0516-530 synclvodm: Logical volume name hd1 changed to fslv05.
synclvodm: Logical volume fslv05 updated.
0516-530 synclvodm: Logical volume name hd10opt changed to fslv06.
synclvodm: Logical volume fslv06 updated.
0516-530 synclvodm: Logical volume name hd11admin changed to fslv07.
synclvodm: Logical volume fslv07 updated.
0516-530 synclvodm: Logical volume name loglv00 changed to loglv03.
0516-712 synclvodm: The chlv succeeded, however chfs must now be
        run on every filesystem which references the old log name loglv00.
synclvodm: Logical volume loglv03 updated.
0516-530 synclvodm: Logical volume name livedump changed to fslv08.
synclvodm: Logical volume fslv08 updated.
0516-530 synclvodm: Logical volume name sec_dumplv changed to lv00.
synclvodm: Logical volume lv00 updated.
0516-530 synclvodm: Logical volume name pri_dumpdev changed to lv01.
synclvodm: Logical volume lv01 updated.

Now I'm downloading the ISO file and can boot into maintenance mode. Can we do the followings:

rename all the LVs to its original name
recreate the hd5 volume
rewrite the boot volume info with bosboot and reboot the system to boot from it.

The thing I'm not very clear is, what is altinst_rootvg? If I can create the boot volume and rename the LV successfully as above, I can boot from it?

With my research about altinst_rootvg, it's a technique to replicate the current OS, this is done by backup purpose. Still reading it for more info ...

Last edited by rbatte1; 06-03-2019 at 09:07 AM..

Phat

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