====== AIX: Increase disk space in a VG online ======

  * Identify the LUN to extend on DS8000, and update the size: chfbvol -cap <new_size_GB> <LUN_ID>
<code>
dscli> chfbvol -cap 100 -quiet 5125
</code>

  * On the target host, check if the LUN size has increased, else wait 30s, and try again:
<code>
# bootinfo -s hdisk0
Or
# getconf DISK_SIZE /dev/hdisk0
</code>

  * Update the VG size, also possible on rootvg, but not on LUN containing an active paging space (you can do it by moving paging on another disk during this operation):
<code>
# chvg -g datavg
</code>