[nagar_yash]

Hi
I have two VGs say vg1 and vg2. vg1 is RAID10, having 4PVs, and has many LVs with Oracle data, and we left no free PPs in that VG to grow any more.
All the LVs in vg1 are mirrored across.

vg2 which is RAID5 and we want to move the mirrored LVs which are on vg1 to vg2.

how to go about? any help!

Regards
Yash

[cdelgadop]

Hi

I use the following procedure:

Moving a JFS FIle to a New Volume Group

1. backup data you intend to migrate
2. unmount fs where lv resides
3. copy the source logical volume to the desired volume group with the cplv
command.
For example, where myvg is the NEW volume group and mylv is the name of
the user's
logical volume, enter:

cplv -v myvg mylv

4. All JFS require a log device. If JFS log does not already exists on the
new volume group,

mklv -t jfslog myvg 1

This will return a new jfslog such as loglv00. This will need to be
reformatted with the
logform command to function as a JFS log.

logform /dev/loglv00

5. Change the filesystem to reference a log device that exists in the new vg
and the new
logical volume with the chfs command.

For example where myfilesystem is the name of the user's filesystem,
enter:

chfs -a dev=/dev/lv00 -a log=/dev/loglv00 /myfilesystem

6. RUn fsck to ensure filesystem integrity,

fsck -p /dev/lv00

7. Mount the file system. For example, where myfilesystem is the name of the
user's
file system, enter:

mount /myfilesystem

At this point the migration is complete and any applications or users can
now access the
data in this filesystem. To change the logical volume name, proceed to
step 8. Note: If
you receive errors from the preceding step do not continue, contact AIX
support center.

8. Remove the source logical volume with the rmlv command:

rmlv mylv

9. Rename and reset any needed attributes on the new logical volume with the
chlv or chmod commands.

For example, where mylv is the name of the user's logical volume, enter:

chlv -n mylv lv00
-------------------------------------------------------------

Hope this helps

[nagar_yash]

Hi there,

The LVs in VG1 are mirrored, so we created a another LV copy on another disks, and then removed it from it from the source copy. By doing this we are able to free the disks in VG1.

But we are still facing issue while adding these disks into the VG2. As the system is under HACMP, this node has disk reserves.. called IBM and lets see...

anyway thanks for you help

Rgds
Yash