Anyone know how to resize a LUN (if SAN disk array has increased the LUN size) and have AIX LVM know about it? Or is it automatic?
Equivalent vxvm command is something like: vxdisk resize [LUN] size=[new size]
on rootvg: not possible
other vg: chvg -g vgname
Awesome, thanks for that.
Manpage for chvg -g option confirms it:
-g
Will examine all the disks in the volume group to see if they have grown in size. If any disks have grown in size attempt to add additional PPs
to PV. If necessary will determine proper 1016 multiplier and conversion to big vg. Notes:
1 The user might be required to execute varyoffvg and then varyonvg on the volume group for LVM to see the size change on the disks.
2 There is no support for re-sizing while the volume group is activated in classic or enhanced concurrent mode.
3 There is no support for re-sizing for the rootvg.
Cheers.
is not 100% true
there is a possibility for dynamically resizing a mirrored rootvg over vio, without adding a third lun, if that's interesting for you, I can search the link to the howto and post it here