MCSG increase lvol size

[Chi Yi Lee]

Hello~

We have two nodes.
we have vg00 and vg01.
vg01 is package.
We would like to increase lvol size
on one of the lvol in vg01.

I tried:
#lvextend -L 512 /dev/vg01/lvol_log
but nothing happen. It says the change has been saved, but I don't see any changes.

the lvol is mirrored.

can someone help me?
steps of command will be great help
thanks~

[Ermin Borovac · Accepted solution]

You have extended lvol, so now you have to extend filesystem that resides on that lvol.

If you don't have OnlineJFS you have to umount fs first.

# umount /dev/vg01/lvol_log
# extendfs /dev/vg01/rlvol_log
# mount /dev/vg01/lvol_log

With OnlineJFS you don't need to umount.

# fsadm -b

[Chi Yi Lee]

Do I need to unmirror it first?

[Shaikh Imran]

Hi,
I will advise you to take a complete backup first before doing this excercise.

& Yes you have to unmirror first--extend the origininal F.S. then mirror it again.
To mirror is very simple :

FYI:
unmirror:
lvreduce -m 0 /dev/vg01/lvol_log

since you already created the lvol,now extend the required filesystem. with

# extendfs /dev/vg01/rlvol_log

Now do the mirroring again as per this:

Mirroring on non-root logical volumes:
Reference the above steps to determine if MirrorDisk/UX
is installed before continuing. For this example, /dev/vg01 will be the volume group and /dev/dsk/c0t5d0 will be the mirror disk.

1) pvcreate /dev/rdsk/c0t5d0

2) vgextend /dev/vg01 /dev/rdsk/c0t5d0

3) lvextend -m 1 /dev/vg01/lvol1 /dev/dsk/c0t5d0

4) lvextend -m 1 /dev/vg01/lvol2 /dev/dsk/c0t5d0

Continue for the remaining logical volumes...


Regards,