HP-UX HB v13.00 Ch-13 - LVM

HP-UX Handbook – Rev 13.00 Page 80 (of 110)
Chapter 13 LVM
October 29, 2013
 For reference, make a note of the volume group configuration. Save the
outputs from LVM commands: vgdisplay, lvdisplay, pvdisplay in verbose
mode.
 Ensure all physical volumes configured in the volume group are online
using ioscan –P health.
 Run /usr/contrib.bin.vgdsf –c <vg_name> to migrate each volume group.
Ensure that no failures are reported.
 Verify the resaulting volume group configuration using LVM display
commands. Use ioscan –m dsf to validate DSF mappings.
Below the vgdsf migration script:
#!/usr/bin/ksh
DEV=$1
LAST=""
if [[ -s /etc/lvmpvg ]]; then
if /usr/bin/grep -q "$DEV" /etc/lvmpvg; then
TOKS=`/usr/bin/grep -e PVG -e "$DEV" /etc/lvmpvg|sed "s/PVG *//"| \
/usr/bin/awk '{ print $1 }'`
for TOK in $TOKS
do
if [[ $TOK = $DEV ]]; then
if [[ -n $LAST ]]; then
PVG="-g $LAST"
fi
return
fi
LAST=$TOK
done
fi
fi
}
Common Issues
There are different common issues, that appear during execution of LVM commands.
Some of them are fixed with patches, Lab requests or in later versions of HP-UX.
Nevertheless a description of some of these is not useless in problem situations: