How to Add a New Hard Disk to an existing vol Group vg01

[Basheer Azeemuddin]

I have a vol grp vg01 (4GB Hard Disk). 1 Gb is assigned to /u and 3GB assigned to /image.
I want to increase the size of /image, becuase it is almost full (95%).

How Can add a new disk so that I can increase size of /image
Thanks in advance

[Craig Rants]

Basheer,
This is from a the HP white paper about LVM work.

III) How to add a disk to a Volume Group
Note The following examples is using the disk c1t6d0 and the volume
group vg01

1) Prepare the disk
pvcreate /dev/rdsk/c1t6d0

Note if the disk was previously used in another VG use the
following command instead:

pvcreate -f /dev/rdsk/c1t6d0

Note: Use caution when using pvcreate -f as this will
overwrite the existing volume group information on the disk.

2) Add the disk to the Volume Group
vgextend /dev/vg01 /dev/dsk/c1t6d0

Good Luck,
C

[A. Clay Stephenson]

Hi:

This is fairly easy.

1) Use pvcreate to prepare a new physical disk.
2) Use vgextend to add the disk to the volume group.
3) Use lvextend to extend the logical volume.

4) Unless you have OnlneJFS, you must umount the filesystem.
5) Use extendfs to extend the filesystem.
6) Remount the filesystem (unless you have OnlineJFS).

If you are unfamiliar with these operations, you can simply use SAM->Disks and Filesystems.

[Roger Baptiste]

hi,

Make sure you have a new disk(or lun) visible and unused from the system.
ioscan -nfCdisk should give you the disks
seen by the system.
If you have selected say /dev/dsk/cxtydz,
make sure it not used by doing
pvdisplay /dev/dsk/cxtydz -> it should not return anything.

then do pvcreate /dev/dsk/cxtydz

vgextend /dev/vg01 /dev/dsk/cxtydz

Now you should be free to extend /image as follows
bdf /image -> note the lv to which it is mounted.

then,
lvextend -L /dev/vg01/lvname

if you have online JFS , try
fsadm -F /dev/vg01/rlvname

if you don't have online JFS
umount /image
extendfs -F /dev/vg01/rlvname

HTH
raj

[Frederic Sevestre]

Hi,

Add the disk to your system
pvcreate /dev/rdsk/cxtydz

Then add he disk to the volume group
vgextend vgxx /dev/dsk/cxtydz

Extend the logical volume
lvextend -L /dev/vgxx/lvolxx
to find the LV name : bdf /image

Extend the file system
If you have OnLine JFS :
fsadm -F vxfs -b /image
If you don't have it
umount /image
extendfs /dev/vgxx/rlovxx
mount /image

Fr??d??ric