add 2 disks to vg00 and extend /var /usr /opt

[Basheer_2]

Hello ITRC,

vg00 has 2 disks mirrored, each 18GB.

Can I add 2 more disks, each 18GB to vg00 on-line.

Thanks
Basheer

[RAC_1]

If disks are hot-swappable, you can add them on line, else not.

Once added and claimed in ioscan -fnCdisk, just do a pvcreate and then vgextend.

Anil

[Simon Hargrave]

Yes, once you have inserted your disks (assuming they are hot-swappable):

ioscan to see the disks
insf to get the files
pvcreate on each new disk
vgextend to add them to the volume group

[Stf]

What is the model of the server???

Stf ;-)

[A. Clay Stephenson]

Yes. If you have OnlineJFS you can even extend the filesystems online as well.

[Basheer_2]

Thanks All of you
I have physically put in 2 disks to L-2000 server on-line without any problems.

I did pvcreate
ioscan sees these 2 disks
entries are in /dev/dsk and /dev/rdsk

My Q is:
can i extend vg00 on-line using these 2 new disks without affecting anything

Thanks
Basheer

[Basheer_2]

Oops

I do not have Advanced JFS

[Rick Garland]

Using the vgextend command - yes.

You will need to run pvcreate before vgextend.

This is assuming that the disks are already part of the hardward and can be seen via ioscan

[Rick Garland]

You would not need Advanced JFS to run vgextend.

vgextend /dev/vg00 /dev/dsk/cXtYdZ

Add disk cXtYdZ to volume group vg00

[Mel Burslan]

you can do the vgextend without needing Online JFS but the added disks will be of no use until you can extend the 3 filesystems you mentioned.

And unfortunately, /usr and /var can not be extended while the system is operational. /opt may be extended if there are no applications are running off of it at that time but the other two will always have files open for system operations. So, your only chance without advanced JFS is to take the system down to single user, run the extendfs command then bring the system back up tot the default init level.

Good luck