Renaming VG in hpux.
Here is the procedure for renaming a VG in hpux. Renaming a VG is simple as exporting the the VG as importing with different name. (eg: vgapp to vgdb)
1. Verify the existing configuration
# bdf|grep vgapp
# umount /apps/test1
2. Deactivate Vg.
3. Create a map file which can be used whileimporting back . File name is /tmp/vgapp
4. Export VG
5. Create device files for vgdb
6. Import the VG with new name using the mapfile
# vgimport -s -N -m /tmp/vgapp vgdb
vgimport: Volume group "/dev/vgdb" has been successfully created.
Warning: A backup of this volume group may not exist on this machine.
Please remember to take a backup using the vgcfgbackup command after activating the volume group.
Note: -N is for pvlink to be in new persistant dsf naming
7. Activate the new VG.
8. Verify the VG and mount the volume
# mount /dev/vgdb/test1 /mnt
Here is the procedure for renaming a VG in hpux. Renaming a VG is simple as exporting the the VG as importing with different name. (eg: vgapp to vgdb)
1. Verify the existing configuration
#vgdisplay vgapp
VG Name /dev/vgapp
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 2
Open LV 2
Max PV 16
Cur PV 4
Act PV 4
Max PE per PV 1016
VGDA 8
PE Size (Mbytes) 32
Total PE 508
Alloc PE 336
Free PE 172
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0
VG Version 1.0
VG Max Size 508g
VG Max Extents 16256
1. Umount all the logical volume from vgapp.
# bdf|grep vgapp
/dev/vgapp/test1 10485760 20062 9811599 0% /apps/test1
# umount /apps/test1
2. Deactivate Vg.
# vgchange -a n vgapp
Volume group "vgapp" has been successfully changed.
3. Create a map file which can be used whileimporting back . File name is /tmp/vgapp
# vgexport -v \ # -->
-p \ # Preview the actions to be taken without updating lvmtab
-s \ # Scan option for creating map file
-m /tmp/vgapp vgapp #description of the volume group and its associated logical volume
Beginning the export process on Volume Group "vgapp".
/dev/disk/disk38
/dev/disk/disk39
/dev/disk/disk40
/dev/disk/disk41
vgexport: Preview of vgexport on volume group "vgapp" succeeded.
4. Export VG
# vgexport vgapp
vgexport: Volume group "vgapp" has been successfully removed.
5. Create device files for vgdb
root@rx16-243 [/root]
# ls -l /dev/*/group
crw-r----- 1 root sys 64 0x000000 Feb 18 20:30 /dev/vg00/group
# mknod /dev/vgdb/group c 64 0x010000
# ls -l /dev/*/group
crw-r----- 1 root sys 64 0x000000 Feb 18 20:30 /dev/vg00/group
crw-r--r-- 1 root sys 64 0x010000 Feb 20 04:36 /dev/vgdb/group
6. Import the VG with new name using the mapfile
# vgimport -s -N -m /tmp/vgapp vgdb
vgimport: Volume group "/dev/vgdb" has been successfully created.
Warning: A backup of this volume group may not exist on this machine.
Please remember to take a backup using the vgcfgbackup command after activating the volume group.
Note: -N is for pvlink to be in new persistant dsf naming
7. Activate the new VG.
# vgchange -a y vgdb
Activated volume group.
Volume group "vgdb" has been successfully changed.
8. Verify the VG and mount the volume
# vgdisplay -v vgdb
--- Volume groups ---
VG Name /dev/vgdb
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 2
Open LV 2
Max PV 16
Cur PV 4
Act PV 4
Max PE per PV 1016
VGDA 8
PE Size (Mbytes) 32
Total PE 508
Alloc PE 336
Free PE 172
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0
VG Version 1.0
VG Max Size 508g
VG Max Extents 16256
--- Logical volumes ---
LV Name /dev/vgdb/test
LV Status available/syncd
LV Size (Mbytes) 512
Current LE 16
Allocated PE 16
Used PV 1
LV Name /dev/vgdb/test1
LV Status available/syncd
LV Size (Mbytes) 10240
Current LE 320
Allocated PE 320
Used PV 3
--- Physical volumes ---
PV Name /dev/disk/disk38
PV Status available
Total PE 127
Free PE 0
Autoswitch On
Proactive Polling On
PV Name /dev/disk/disk39
PV Status available
Total PE 127
Free PE 0
Autoswitch On
Proactive Polling On
PV Name /dev/disk/disk40
PV Status available
Total PE 127
Free PE 45
Autoswitch On
Proactive Polling On
PV Name /dev/disk/disk41
PV Status available
Total PE 127
Free PE 127
Autoswitch On
Proactive Polling On
# mount /dev/vgdb/test1 /mnt
# bdf /mnt
Filesystem kbytes used avail %used Mounted on
/dev/vgdb/test1 10485760 20062 9811599 0% /mnt
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