Recommended Action - HP -UX 11i Administrator's Manual

1. The disk was missing when the volume group was activated, but was later restored. This
typically occurs when a system is rebooted or the volume group is activated with a disk missing,
uncabled, or powered down.
2. The disk LVM header was overwritten with the wrong volume group information. If the disk is
shared between two systems, one system might not be aware that the disk was already in a
volume group. To confirm, check the volume group information using the dump_lvmtab
command (available from your HP support representative) and look for inconsistencies. For
example:
# dump_lvmtab -s | more
SYSTEM : 0x35c8cf58
TIME
FILE
HEADER : version:0x03e8
VG[00]
(00)
(01)
VG[01]
(00) !VGID:35c8cf58 3f8df316 PVID:065f303f 3e63effa /dev/dsk/c40t0d0
(01) !VGID:35c8cf58 3f8df316 PVID:065f303f 3e63effe /dev/dsk/c40t0d4
(02) !VGID:35c8cf58 3f8df316 PVID:065f303f 3e63f003 /dev/dsk/c40t1d0
...
In this example, the VGIDs for the disks in /dev/vg01 are not consistent; inconsistencies are
marked !VGID.

Recommended Action

1. Use ioscan and diskinfo to confirm that the disk is functioning properly. Reactivate the
volume group using the following command:
# vgchange
2. There are several methods of recovery from this error. If you are not familiar with the commands
outlined in the following procedures, contact your HP support representative for assistance.
a. Restore a known good configuration to the disks using vgcfgrestore. Be sure to use
a valid copy dated before the first occurrence of the problem. For example:
# vgcfgrestore
b. Recreate the volume group and its logical volumes, restoring the data from the most current
backup. See
(page
c. Export and reimport the volume group, as described in
(page 57)
# vgexport -m vgname.map -v -f vgname.file /dev/vgname
# vgimport -m vgname.map -v -f vgname.file /dev/vgname
Message Text
vgchange: Couldn't set the unique id for volume group "/dev/vgname"
Cause
There are multiple LVM group files with the same minor number.
Recommended Action
List the LVM group files. If there are any duplicate minor numbers, export one of the affected volume
groups, optionally create a new group file with a unique minor number, and reimport the volume
group. If you are not familiar with this procedure, contact your HP support representative for
assistance.
# ll /dev/*/group
# vgexport -m vgname.map -v -f vgname.file /dev/vgname
168 Warning and Error Messages
: 0x3f9acc69 : Sat Oct 25 15:18:01 2003
: /etc/lvmtab
VGID:35c8cf58 3dd13164 (@0x00040c) pvnum:2 state:0 /dev/vg00
VGID:35c8cf58 3dd13164 PVID:35c8cf58 3dd13164 /dev/dsk/c0t6d0
VGID:35c8cf58 3dd13164 PVID:35c8cf58 3dda4694 /dev/dsk/c4t6d0
VGID:065f303f 3e63f01a (@0x001032) pvnum:92 state:0 /dev/vg01
a y vgname
n vgname pvname
"Creating a Volume Group" (page 44)
52).
and "Importing a Volume Group" (page
vgnum:7
and "Creating a Logical Volume"
"Exporting a Volume Group"
58). For example: