extend LV

[prash_1]

Dear Gurus,
I want to extend LV before that some
questionsin my mind.
1) how to check online JFS is installed or not?
2) If online jfs is installed and I use command
extendfs (after lvectend command) instade of fsadm command what will happen
Thanks.

[Ludovic Derlyn · Accepted solution]

hi,

for fisrst question, do

swlist -l product |grep -i online

if jfs online is installed , use fsadm

fsadm -F vxfs -b sizeM /dev/vgxx/lvolxx

regards

L-DERLYN

[Pete Randall]

# swlist |grep -i online
B3929CA B.11.11 HP OnLineJFS

If you use extendfs, you will need to unmount the file system first, thus negating the advantage of OnlineJFS.


Pete

[Ralph Grothe]

The most obvious check if OnlineJFS is installed would actually be trying to extend the mounted filesystem after you have lvextended.
It would most likely moan that this isn't possible if it weren't installed.

e.g.

# lvextend -l $((no_curr_LEs + no_add_LEs) /dev/vg??/lvol?

# lvdisplay /dev/vg??/lvol? | grep LV\ Size

# fsadm -F vxfs -b lv_sizeM /mount/of/lvol?

[Coolmar]

Hi Prash,

1) $ swlist -l product |grep JFS
The above command will return the product and version if it is installed

2) If it is installed, do the following to extend your filesystem:
1. Extend logical volume,
#lvextend -L 2000 /dev/vgxx/lvolxx

2. Extend filesystem
#fsadm -b 2000m /filesystem

[Indrajit_1]

Hi;

#swlist -l product |grep -i online


check if online JFS in installed.

if not,

u need to unmount the filesystem and run extendfs to increase the LV size.

Cheers;
Indrajit Roy

[Bill Hassell]

extendfs always works. It makes filesystems larger BUT the filesystem cannot be mounted. Online JFS adds the capability to extend the filesystem without un-mounting.

[prash_1]

thanks for your replies yesterday I extend lv