this is obsolete doc -- see http://doc.nethence.com/ instead

Configuring system's storage on HP/UX 11i (part 4) 

Introduction 

Note. The lvextend command is available on 11i v1 but not lvmerge. 

Note. The fsadm command is also there but the only possible options are -F <FStype> and -o <specific_options>. So I guess it's mandatory to unmount the file system before you extend it on 11iv1. 

Looking for logical volumes, volume groups and disks 

Basic usage 

See what disks are available (-k for kernel I/O system data structures), 

ioscan -fnkC disk

diskinfo /dev/rdsk/c0t0d0

diskinfo /dev/rdsk/c3t6d0

Note. "diskinfo -v" for more details 

Note. Here's a little script if you are tired of counting kbytes yourself (http://pbraun.nethence.com/scripts/sysutils/hpux/diskspace.ksh). 

Have a quick look on the available volume groups and used disks, 

strings /etc/lvmtab

See the LVM physical volume details on the used disks, 

pvdisplay /dev/dsk/c3t6d0

See all the volume groups, their child logical volumes and the corresponding physical volumes, 

vgdisplay -v | grep Name

See how much space you got left on vg00, 

vgdisplay vg00

Note. Here's a little script if you are tired of calculating the free PE's yourself (http://pbraun.nethence.com/scripts/sysutils/hpux/vgspace.ksh) 

See how much space is available on the mounted file systems, 

bdf

Increase the size of a filesystem (draft in progress) 

I am assuming you've got enought space left in vg00 to extend lvol6 (/opt/). 

Reboot into single user mode, 

shutdown -r -y now

Main Menu: Enter command > boot

Interact with IPL (Y, N, Q)?> y

ISL> hpux -is /stand/vmunix

get to your environment and set TERM, 

mount -a

umount /opt/

su -

extend the logical volume and filesystem you need to extend, 

lvdisplay /dev/vg00/lvol6 | grep 'LV Size'

vgdisplay vg00 | grep Free

lvextend -L 2048 /dev/vg00/lvol6

extendfs /dev/vg00/lvol6

^D

sync

reboot

Adding a new disk 

Assuming there is a second disk you want to place some data on, 

ioscan -funC disk

pvcreate /dev/rdsk/c3t5d0

cd /dev/

mkdir -p vgdata/

cd vgdata/

mknod group c 64 0x010000

vgcreate vgdata /dev/dsk/c3t5d0

vgdisplay vgdata | grep 'PE'

lvcreate -l 2169 -n lvdata vgdata

newfs -F vxfs /dev/vgdata/rlvdata

add this to fstab, 

/dev/vgdata/lvdata /data vxfs delaylog 0 2

and mount the volume, 

mkdir -p /data/

mount /data/

Additional notes 

Eventually backup your configuration, 

vgcfgbackup vg00

mkdir -p ~/backup/

cp /etc/lvmconf/vg00.conf ~/backup/