topic Re: panic: Data page fault in Operating System - HP-UX

panic: Data page fault

dblinov — Mon, 11 Oct 2004 03:05:38 GMT

Hi everybody.

I have a vg00 volume group consist of 2 disks mirrored by Mirror/UX. Yesterday I need to extend /tmp (/dev/vg00/lvol4).
I've rebooted with hpux -lm, after that:
vgchange -a y /dev/vg00
lvextend -L 400 /dev/vg00/lvol4
extendfs /dev/vg00/lvol4

I've checked tried to mount /tmp, everything was ok, /tmp has a new size. But after reboot I'm getting system panic on console.
Is any way to fix it? I still can boot in hpux -lm mode.

Thanks in advance.

Re: panic: Data page fault

bhavin asokan — Mon, 11 Oct 2004 04:08:52 GMT

hi,

i think you have done some mistakes.

extendfs should be done with rlvol option.

extendfs /dev/vg00/rlvol4

regds,

Re: panic: Data page fault

dblinov — Mon, 11 Oct 2004 04:14:38 GMT

Is it safe to execute extendfs /dev/vg00/rlvol4
now?

Re: panic: Data page fault

bhavin asokan — Mon, 11 Oct 2004 07:53:17 GMT

hi,
pls check that /tmp is having which filesystem entry in /etc/fstab.

check in /etc/default/fs is the same filesystem as /tmp. extendfs /dev/vg00/rlvol4 used when /etc/default/fs and filesystem entry in /etc/fstab shows same.otherwise you should use
extendfs -F vxfs /dev/vg00/rlvol4 (for vxfs filesystem)

extendfs -F hfs /dev/vg00/rlvol4 (for hfs filesystem)

once you have extended the filesystem .so it will not allow you to extend it once more.
assuming you are having vxfs in /etc/fstab .

if you are able to mount /tmp

then create a new lv with a bigger size.
(as you are having mirror-ux create mirror by
lvextend -m 1 /dev/vg00/lvolxx /dev/dsk/cxtxdx

where is lvolxx is the newlv and /dev/dsk/cxtxdx is the second disk).

create file system by newfs.mount it on /tmp1
newfs -F vxfs /dev/vg00/rlvolxx .

copy all the files in /tmp in to that lv.
unmount /dev/vg00/lvol4 from /tmp
unmount new lvol from /tmp1
mount newlvol in /tmp

make necessary change in fstab for /tmp.

reboot the system.

regds,

Re: panic: Data page fault

Albert Smith_1 — Tue, 23 Nov 2004 11:06:51 GMT

I recently had the same problem with a data page fault on VG00. It wasn't a size issue but a disk that belonged in the volume group and was on the SAN was not available. Make sure all your physical disks are there.