LVM and VxVM

/dev/vg00/lvol3 (root file sytem) showing bad block

 
AwadheshPandey
Honored Contributor

/dev/vg00/lvol3 (root file sytem) showing bad block

on hp-ux 10.20 box, there r some bad blocks on root file system (/dev/vg00/lvol3),so that sytem is not coming up.
is it is possible to to boot system ?
how can i solve this problem ?

Thanks for help.

Awadhesh
It's kind of fun to do the impossible
8 REPLIES 8
RAC_1
Honored Contributor

Re: /dev/vg00/lvol3 (root file sytem) showing bad block

Can you boot into single user mode?? Doesn't system do fsck and boot?? you can go into single user mode, do fsck with alternate superblock(ususally 16) and try.
There is no substitute to HARDWORK
AwadheshPandey
Honored Contributor

Re: /dev/vg00/lvol3 (root file sytem) showing bad block

thanks RAC for reply, i can boot in single user mod, but fsck is not able to fix the problem, how to boot with another superblock (16)?

Awadhesh
It's kind of fun to do the impossible
Artyom Voronchihin
Respected Contributor

Re: /dev/vg00/lvol3 (root file sytem) showing bad block

Hello!

Try to boot in Recovery Shell and correct the problem using HP-UX Core Recovery Menu or fsck(1m). To get in to Recovery Shell you should boot from HP-UX Install Media and choose it from installation menu.
"Intel inside" is not a label, it's a warning.
Artyom Voronchihin
Respected Contributor

Re: /dev/vg00/lvol3 (root file sytem) showing bad block

For HFS filesystem it is possible to use copy of superblock with fsck (see fsck -b ). List of superblocks for HFS filesystems is contained in /etc/sbtab file.
"Intel inside" is not a label, it's a warning.
RAC_1
Honored Contributor

Re: /dev/vg00/lvol3 (root file sytem) showing bad block

fsck_hfs -F hfs -b 16 /dev/vg00/rlvol1
There is no substitute to HARDWORK
AwadheshPandey
Honored Contributor

Re: /dev/vg00/lvol3 (root file sytem) showing bad block

fsck with alt superblock also not able to resolve the issue.

Awadhesh
It's kind of fun to do the impossible
Hoang Chi Cong_1
Honored Contributor

Re: /dev/vg00/lvol3 (root file sytem) showing bad block

How can you know that the filesystem had bad blocks?
I need exactly error messages!
In normally, if you can boot into single-user mode, of course you can reboot the server. The filesystem will be checked at booting time.
Can solve it?
Do you have Online-JFS?
Looking for a special chance.......
Hoang Chi Cong_1
Honored Contributor

Re: /dev/vg00/lvol3 (root file sytem) showing bad block

Once more:
I recommend you should make a recovery tape (by using make_tape_recovery command) as soon as possible. It is more safe for your system :)

Regard,
Hoang Chi Cong
Looking for a special chance.......