Move data to new volume group in Cluster Env.

[stelecom]

Dear All,

We have a 2 node cluster. We want to extend old volume group but Max_PE_per_PV parameters is so small, so We need to replace old volume group by a new volume group and move all data from old vg to a new volume group.

Am i correct in my procedure??


Node1:

pvcreate /dev/rdsk/c3t2d5
mkdir /dev/vg10
mknod /dev/vg10/group c 64 0x060001
pvcreate /dev/rdsk/c3t2d5
vgcreate –e 9472 /dev/vg10 /dev/dsk/c3t2d5
lvcreate -L 25600 /dev/vg10
umount /dev/vg10/lvol1
extendfs -F vxfs /dev/vg10/rlvol1
mkdir MYAPPDB/oraindex2
mount /dev/vg10/lvol1 /MYAPPDB/oraindex2
cp /MYAPPDB/oraindex1 /MYAPPDB/oraindex2

--Remove old volume group

umount /dev/vg06/lvol1 /MYAPPDB/oraindex1
lvremove -f /dev/vg06/lvol1
vgremove /dev/vg06

umount /dev/vg10/lvol1 /MYAPPDB/oraindex2
mount /dev/vg10/lvol1 /MYAPPDB/oraindex1
rv /MYAPPDB/oraindex2

vgexport –s –p –v –m /tmp/vg10.map /dev/vg10
rcp –p /tmp/vg10.map node2:/tmp/

Node2:

vgremove vg06
mkdir /dev/vg10
mknod group c 64 0x060001
vgimport –p –s –m /tmp/vg10.map –v /dev/vg10
vgchange –a r /dev/vg10
vgcfgbackup /dev/vg10
vgchange –a –n /dev/vg10


Many Thanks,
Vu.

[RAC_1]

The procedure looks OK. For copying data, you have many options.

cpio
vxdump
fbackup

[Mark Nieuwboer · Accepted solution]

I don't thing this is the correct way.
First make a backup of the filesystem or a tar file.
tar cvf oraindex.tar /MYAPPDB/oraindex1
pvcreate /dev/rdsk/c3t2d5
mkdir /dev/vg10
mknod /dev/vg10/group c 64 0x070000
vgcreate -e 30000 -s 16 /dev/vg10 /dev/dsk/c3t2d5 This because you can put bigger disk in the futher in the volumegroup.
lvcreate -L 25600 /dev/vg10/lvol1
newfs -F vxfs /dev/vg10/rvol1
umount /MYAPPDB/oraindex1
mount /dev/vg10/lvol1 /MYAPPDB/oraindex1
tar xvf oraindex.tar
vgexport -s -p -v mm /tmp/vg10.map /dev/vg10
rcp -p /tmp/vg10.map node2:/tmp/
change the cluster.configuration and packageconfiguration.
vgchange -a n /dev/vg10
vgchange -c y /dev/vg10
and cmcheckconf -c cluster.ascii
cmapplyconf -c cluster.ascii
cmcheckconf -p package.conf
cmapplyconf -p package.conf

on node 2

mkdir /dev/vg10
mknod group c 64 0x060001
vgimport -p -s -m /tmp/vg10.map -v /dev/vg10
vgcfgbackup /dev/vg10

change the cluster.configuration and packageconfiguration.
and cmcheckconf -c cluster.ascii
cmapplyconf -c cluster.ascii
cmcheckconf -p package.conf
cmapplyconf -p package.conf
start the package.

After this remove the old volumegroup.
with vgexport.

grtz. Mark

[stelecom]

Dear all,

How can i get minor number (64 0x070000 ??)

Thks,
Vu

[Devender Khatana]

Hi,

Minor number should be unique for the system on which you create the VG. Confirm allready used minor numbers by

#ll /dev/vg*/group

And use the next available number in Hex.

HTH,
Devender