AIX : VG ODM Fix
Method 1.
reducevg -df rootvg 0042d01a6d3bc785
Method 2.
1. find pvid on new hdisk1
#dd if=/dev/hdisk1 count=1 | od -x | grep 0000200 # check this
you should get something like: 0000200 xxxx yyyy zzzz aaa bbbb – that’s your pvid
2. get info about old hdisk1 from ODM
#odmget -q “name=hdisk1” CuDv > /tmp/hdisk1_dv.add
#odmget -q “name=hdisk1” CuAt > /tmp/hdisk1_at.add
3. edit created files by replacing old hdisk1’s pvid to new one
# vi /tmp/hdisk1_dv.add
# vi /tmp/hdisk1_at.add
4. add this new information to ODM
# odmadd /tmp/hdisk1_dv.add
# odmadd /tmp/hdisk1_at.add
5. remove disk from system
# reducevg vgname hdisk1
# rmdev hdisk1
6. Add new disk to system
# extendvg -f vgname hdisk1
Method 3.
PV=hdisk1 # check this
VG=rootvg
cp /etc/objrepos/CuAt /etc/objrepos/CuAt.$$
cp /etc/objrepos/CuDep /etc/objrepos/CuDep.$$
cp /etc/objrepos/CuDv /etc/objrepos/CuDv.$$
cp /etc/objrepos/CuDvDr /etc/objrepos/CuDvDr.$$
lqueryvg -Lp $PV | awk ‘{print $2}’ | while read LVname;
do
odmdelete -q “name=$LVname” -o CuAt
odmdelete -q “name=$LVname” -o CuDv
odmdelete -q “value3=$LVname” -o CuDvDr
done
odmdelete -q “name=$VG” -o CuAt
odmdelete -q “parent=$VG” -o CuDv
odmdelete -q “name=$VG” -o CuDv
odmdelete -q “name=$VG” -o CuDep
odmdelete -q “dependency=$VG” -o CuDep
odmdelete -q “value1=10” -o CuDvDr
odmdelete -q “value3=$VG” -o CuDvDr
importvg -y $VG $PV # ignore lvaryoffvg errors
varyonvg $VG
Addendum : If you find, as you may with provisioing VIOS storage, that *new* PV’s have old VG details, when cfgmgr is run, then exportvg is a good way to remove the VG prior to re-defining it.
