This document provides steps to remove the primary swap volume on an HP-UX 11iv3 system and configure a new primary swap volume. The steps are: 1. Create a new swap volume in a different volume group and activate it with swapon. 2. Deactivate and remove the original primary swap volume with swapoff and lvrmboot. 3. Add an entry for the new swap volume to /etc/fstab and reboot. 4. Verify the new swap volume is active and functioning as the primary swap volume.

1. How to remove primary swap on HP-UX 11iv3 online
By Dusan Baljevic (dusan.baljevic@ieee.org)
Remove primary swap and move it into another volume group. To remove
the primary swap, we need to ensure that the new swap device has at
least enough space that “reserve” requires. Otherwise, swapoff(1M)
command will fail!
Step 1: Add new primary swap (can be in other VG but that is strongly
not recommended!)
# lvcreate -C y –r n -L 8192 -n lvswap2 /dev/vgswap
# swapon -f
/dev/vgswap/lvswap2
# swapinfo -tm
Mb
TYPE
AVAIL
dev
8192
/dev/vg00/lvol2
dev
8192
/dev/vgswap/lvswap2
reserve
memory
3876
total
20260
MbMbPCT START/
USED
FREE USED
0
8192
0%
Mb
LIMIT RESERVE
0
-
PRI
1
0
8192
0%
0
-
1
1301
963
2264
-1301
2913
17996
25%
11%
-
0
-
START/
Mb
FREE USED
LIMIT RESERVE
8192
0%
0
-
PRI
1
NAME
Step 2: Remove primary swap on-line
# swapoff /dev/vg00/lvol2
# lvrmboot -s vg00
# swapinfo -tm
Mb
MbMbPCT
TYPE
AVAIL
USED
dev
8192
0
/dev/vgswap/lvswap2
reserve
1291
memory
3876
963
total
12068
2254
-1291
2913
9814
25%
19%
-
0
-
NAME

2. Step 3: Add line into /etc/fstab for the new primary swap and reboot
the server
/dev/vg00/lvol3 / vxfs delaylog 0 1
/dev/vg00/lvol1 /stand vxfs tranflush 0 1
/dev/vg00/lvol4 /home vxfs delaylog 0 2
/dev/vg00/lvol5 /tmp vxfs delaylog 0 2
/dev/vg00/lvol6 /usr vxfs delaylog 0 2
/dev/vg00/lvol7 /var vxfs delaylog 0 2
/dev/vg00/lvol8 /var/tmp vxfs delaylog 0 2
#/dev/vg00/lvdump3 / dump defaults 0 0
/dev/vgswap/lvswap2 / swap defaults 0 0
After the reboot, check swap status and confirm that non-root volume
is now the primary swap:
# swapinfo -tm
Mb
MbMbPCT
TYPE
AVAIL
USED
dev
8192
0
/dev/vgswap/lvswap2
reserve
1283
memory
3876
950
total
12068
2233
START/
Mb
FREE USED
LIMIT RESERVE
8192
0%
0
-1283
2926
9835
25%
19%
-
0
PRI
1
NAME
-
However, because we did not initialize the disk in vgswap with “-B”
option, it does not contain the Boot Area, and cannot be added with
“lvlnboot -s /dev/vgswap/lvswap2”. As a result, this is reported:
# lvlnboot -v
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/disk/disk6_p2 -- Boot Disk
Boot: lvol1
on:
/dev/disk/disk6_p2
Root: lvol3
on:
/dev/disk/disk6_p2
No Swap Logical Volume configured
No Dump Logical Volume configured