/ mounted on /dev/root

[Woo Kim Chye]

I have a A500 workstation running HP-UX 11.0. There was a power trip and the workstation was power off. However, after I power up the workstation, I found that the filesystem / was mounted on the /dev/root instead on /dev/vg00/lvol3. Following is the output of the bdf command:
Filesystem kbytes used avail %used Mounted on
/dev/root 147456 32095 108736 23% /
/dev/vg00/lvol1 87701 50825 28105 64% /stand
/dev/vg00/lvol8 1163264 559577 566338 50% /var
/dev/vg00/lvol7 1286144 547970 692084 44% /usr
/dev/vg00/lvol4 262144 45467 203171 18% /tmp
/dev/vg00/lvol6 1572864 560091 949496 37% /opt
/dev/vg00/lvol9 4096000 1343198 2581763 34% /home

The /etc/fstab still says that / is supposed to mount on /dev/vg00/lvol3 as shown below:
/dev/vg00/lvol3 / vxfs delaylog 0 1

lvdisplay says that the lvol is OK. fsck also says that the lvol is mounted.

The problem persist even I reboot the workstation.
Wonder anyone has faced this problem before.
Thanks.

[Tim D Fulford]

edit /etc/mnttab
/dev/vg00/lvol3 / ....etc....

I believe this happens after you boot in/from single user mode.

Tim

[Krzysztof Kielak]

Hi,

try running lvlnboot -v and check if you have correct definition of root, boot, swap and dump. If not you can use lvlnboot with apropriate option to modify wrong setting

rgds
Chris

[Bernie Vande Griend · Accepted solution]

All you need to do is:

rm /etc/mnttab
mount -a

bdf should now show root mounted in the right location.
If you want to be safe first do a, cp /etc/mnttab /etc/mnttab.keep

This is very common when the system boots into maintenance mode or similar situations.

[James R. Ferguson]

Hi:

To repair this, do:

# rm /etc/mnttab
# mount -a

Regards!

...JRF...

[Woo Kim Chye]

Thanks guys. It works.