Expand LUN

UNIX AIX
1

Hello all,

I have the following env:

  • DS4300 storage SAN
  • AIX 5.3 Lpar (storage through vio server)
  • AIX 5.3 Server

Some FS are too small do I'm setting up a process to increase the size of the FS.

To expand the size of the FS I plan to do the following for the physical AIX server, because I have no free PPs in the VG.
1) Expand LUN on the DS4300
2) Run chvg -g <vg> on the AIX server
3) Run chfs -a size=+7G on the AIX server
4) Be happy with again a successful change

Can I use the same procedure for my AIX lpar?

The storage for the AIX lpar is assigned through a vios server. The backing devices for the disks in the LPAR are hdisks available in the vio server.

Is running chvg -g <vg> in the LPAR enough to have the new LUN size available in the LPAR? Does the vio server automatically pick up the new LUN size? Do I need to run something in the vio server as well?

--Peter

2

Hi,

that's the way it works, go on with it

to make sure run bootinfo -s on both vio and lpar, and if its not changed try to run cfgmgr, but this should not be necessary, maybe on older 1.x releases

but don't run chvg -g on concurrent vgs, this is not supported (on clusters for example)