topic problem with vgdisplay in Operating System - HP-UX

problem with vgdisplay

Kourla — Tue, 25 Mar 2003 15:08:36 GMT

When I tried to vgdisplay /dev/vg02 I got the following error
--------------------------------------------
vgdisplay: Volume group not activated.
vgdisplay: Cannot display volume group "/dev/vg02".
--------------------------------------------
Then I tried to activate the volume group using
vgchange -a y /dev/vg02 then I got the following error
-----------------------------------------------
vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c1t4d0":
Device busy
vgchange: Warning: couldn't query physical volume "/dev/dsk/c1t4d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Couldn't query the list of physical volumes.
vgchange: Couldn't activate volume group "/dev/vg02":
Quorum not present, or some physical volume(s) are missing.
-----------------------------------------------

Can you please somebody explain the reason and solution to the problem

Re: problem with vgdisplay

Gene Kornacki_3 — Tue, 25 Mar 2003 15:10:36 GMT

Have you run a vgscan?

Re: problem with vgdisplay

James R. Ferguson — Tue, 25 Mar 2003 15:12:02 GMT

Hi:

Check to insure that you do not have any duplicate minor numbers for you volume groups:

# ls -l /dev/vg*/group

Regards!

...JRF...

Re: problem with vgdisplay

Kourla — Tue, 25 Mar 2003 15:18:16 GMT

Gene, the vgscan out put file is attached (See the attached file).

Also ls -l /dev/vg*/group out put is given below.
ls -l /dev/vg*/group
crw-r----- 1 root sys 64 0x000000 Apr 23 2002 /dev/vg00/group
crw-rw-rw- 1 root sys 64 0x010000 Apr 23 2002 /dev/vg01/group
crw-rw-rw- 1 root sys 64 0x020000 Apr 23 2002 /dev/vg02/group
crw-rw-rw- 1 root sys 64 0x030000 Oct 26 14:29 /dev/vg03/group

Re: problem with vgdisplay

Jeff Schussele — Tue, 25 Mar 2003 15:21:45 GMT

Hi,

What does

diskinfo /dev/rdsk/c1t4d0

return?

Could be a bad disk.

Rgds,
Jeff

Re: problem with vgdisplay

James R. Ferguson — Tue, 25 Mar 2003 15:22:12 GMT

Hi (again):

Do:

# diskinfo /dev/rdsk/c1t4d0

Make sure that you can not only see the disk, but that the size returned is non-zero.

Regards!

...JRF...

Re: problem with vgdisplay

Pete Randall — Tue, 25 Mar 2003 15:22:36 GMT

Looks like you have a problem with the disk at /dev/dsk/c1t4d0. Try a diskinfo on it. If you get no errors from that, try "dd if=/dev/rdsk/c1t4d0 of=/dev/null bs=1024k" and see if you get any errors from that.

Pete

Re: problem with vgdisplay

CCIL — Tue, 25 Mar 2003 15:27:27 GMT

Hi
Check the output of ioscan -kfnC disk & check whether the you get /dev/dsk/c1t4d0
if yes then check diskinfo /dev/rdsk/c1t4d0
check the /etc/lvmtab entry for the above disk as well.

Re: problem with vgdisplay

Gene Kornacki_3 — Tue, 25 Mar 2003 15:58:03 GMT

Did this just happen all of a sudden? Has there been HW changes?

mv /etc/lvmtab /etc/lvmtab.old

and run vgscan again. This will rebuild the lvmtab. I've done this in the past and HPUX comes back with a message stating you have to use vgimport to import the PV's into the VG. Or soemthing to that effect....

Re: problem with vgdisplay

James Clay_2 — Wed, 26 Mar 2003 08:18:56 GMT

I had what sounds like the same problem the other day.

Are you using PV links, and the device referred to as missing i.e. c1t4d0 has been re-assigned another controller number?

I re-added the pvlink to the new controller number i.e. c1t4d0 had become c4t4d0 and then removed the lvmtab and ran a vgscan. This solved my problem.

Running a vgscan before this wouldn't work as the PVRA information was corrupt and the system wouldn't detect any VG's with this problem.

Good luck.

Re: problem with vgdisplay

Kourla — Thu, 27 Mar 2003 07:31:56 GMT

sorry for the late response..

diskinfo output is
# diskinfo /dev/rdsk/c1t4d0

SCSI describe of /dev/rdsk/c1t4d0:
vendor: SEAGATE
product id: ST39173WC
type: direct access
size: 0 Kbytes
bytes per sector: 0

the size is 0 bytes

Re: problem with vgdisplay

T G Manikandan — Thu, 27 Mar 2003 08:01:28 GMT

The disk has gone bad.

check the size,it shows '0' bytes.

Replace the disk.

Thanks

Re: problem with vgdisplay

Jeff Schussele — Thu, 27 Mar 2003 13:27:50 GMT

Yep, that disk is history.
Call the RC & log a HW case.

Rgds,
Jeff