How to extend lvol using space from unused lvol

[Robert Peregrin]

Hi,

I want to extend /dev/vg00/lvol5 using space from /dev/vg00/lvol4 which is unused. vg00 is using only one physical volume which is /dev/dsk/c2t0d0. How should I do it?


Regards,

Robert Peregrin

[sujit kumar singh · Accepted solution]

HI Robert,

what is the FS mounted on /dev/vg00/lvol4.
have you online JFS?

if you have free space in VG this straight forward adnd have online JFS
a) lvextend -L

b) fsadm -b



there are various way to do the same.
take a backup of /dev/vg00/lvol4.

if so you have
1)do a defrag on the FS:
fsadm -dD -eE /dev/vg00/lvol4

Reduce the FS:
2) fsadm -b M

if that is successful,

3) lvreduce -L /dev/vg00/lvol4

regards
sujit

[sujit kumar singh]

HI Robert,

what is the FS mounted on /dev/vg00/lvol5.
have you online JFS?

if you have free space in VG this straight forward adnd have online JFS
a) lvextend -L

b) fsadm -b



there are various way to do the same.
take a backup of /dev/vg00/lvol4.

if so you have
1)do a defrag on the FS:
fsadm -dD -eE /dev/vg00/lvol4

Reduce the FS:
2) fsadm -b M

if that is successful,

3) lvreduce -L /dev/vg00/lvol4

follow this by:

a) lvextend -L

b) fsadm -b



regards
sujit

[Robert Peregrin]

Hi,

lvol5 is used for /opt and lvol4 is used for /home.

Do I have to reboot the machine after the changes you suggested?


Regards,

Robert

[HP-UX_Ali]

Hello Robet,

No reboot is not required, this is all online activity.


Regards,
Ali

[Robert Peregrin]

Hi,

One more question. I have VxFS in the 2 logical volumes that I will work with. JFS is equivalent to VxFS in HPUXX right? If yes, then the procedure you provided should apply to the file system I have on the server.


Regards,

Robert

[Amit Shrivastava_1]

yes jfs is equivalent to vxfs ,
if you have online jfs then use the folowing

fsadm -b
lvreduce -L

if not then,

umount the FS

use extendfs , go through the man page
lvreduce -L

mount the FS

[Robert Peregrin]

Thanks guys. Unfortunately we don't have a license for fsadm. But we found a way to do it using sam.

[Robert Peregrin]

We don't have a license for fsadm but we found another way to do it using sam.