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107Administering disks
Rootability
Adding swap volumes to a VxVM rootable system
To add a swap volume to an HP-UX system with a VxVM root disk
1 Initialize the disk that is to be used to hold the swap volume (for example,
c2t5d0), and add it to the boot disk group with the disk media name
“swapdisk”:
# /etc/vx/bin/vxdisksetup -i c2t5d0
# vxdg -g bootdg adddisk swapdisk=c2t5d0
2 Create a VxVM volume on swapdisk (with a size of 4 gigabytes in this
example):
# vxassist -g bootdg -U swap make swapvol1 4g dm:swapdisk
In this example, the size of the volume is 4 gigabytes.
3 Add the volume to the /etc/fstab file, and enable the volume as a swap
device.
# echo "/dev/vx/dsk/bootdg/swapvol1 - swap defaults 0 0" \
>> /etc/fstab
# swapon -a
4 View the changed swap configuration:
# swapinfo
Adding persistent dump volumes to a VxVM rootable system
A persistent dump volume is used when creating crash dumps, which are
eventually saved in the /var/adm/crash directory. A maximum of ten VxVM
volumes can be configured as persistent dump volumes.
To add a persistent dump volume to an HP-UX system with a VxVM root disk
1 Create the VxVM volume that is to be used as the dump volume in the boot
disk group:
# vxassist -g bootdg make dumpvol 5g
In this example, the size of the volume is 5 gigabytes.
2 Display the configuration of the volume:
# vxprint -g bootdg
3 Display the initial crash dump configuration:
# crashconf -v
4 Add the volume as a persistent dump device to the crash dump
configuration:
# crashconf -s /dev/vx/dsk/bootdg/dumpvol
5 Display the new crash dump configuration:
# crashconf -v