cannot mount /usr from rebuilding mirror drive

[Rob O'Connor]

Our hp root drive just failed.
Replace the drive and trying to rebuild it.
boot to alternate drive.
Went into single user hpux -is lq
vgcfgrestore -n /dev/vg00 /dev/dsk/c2t2d0
vgchange -a y /dev/vg00
vgsync /dev/vg00
mount /usr
I cannot mount /usr. The system just freezes. Any suggestions?

[A. Clay Stephenson · Accepted solution]

If these were hot-plug drives, you should have never shutdown but I suppose the next task would be an fsck. (It would almost certainly be required anyway).

Check for the correct device but and filesystem type but something close to this:

fsck -F vxfs /dev/vg00/rvol7

[Sridhar Bhaskarla]

Hi,

Does your /sbin/lvdisplay -v /dev/vg00/lvolx
display both the mirrors as current and there are no stale entries still?. If you find anything stale on the original mirror, then you don't have a good /usr.

I would try 'fsck' on the logical volume of usr. But that would be my last option as you may get your data wiped if there is any inconsistency.



-Sri

[A. Clay Stephenson]

Actually, fsck will do not harm UNLESS you answer "y" (or use the -y option). If you really want to be safe set the "-n" option to answer "no" to everything.

[Tim Adamson_1]

Check that /usr is mirrored and there are no stale extents.

fsck the lvol.

Can you see if there is any activity on the physical disks (either the primary or alternate or both) to determine if something is actually happening? You would obviously need to eyeball the disks.


Tim.

[Rob O'Connor]

Well, fsck ran with inode errors.
Guess what I spend last night doing.
Rebuilding server.
Forunately, I had Ignite.
I always took Ignite for granted. Not anymore.
Need sleep.
Thanks everyone.