(Posted LinkedIn April 2013)
From the InForm 3.1.2 GUI I wanted to tune many volumes that we had initially provisioned as Thick to Thin. I did not want to take the volumes offline. There is no option for this in the GUI that I can see, it needs to be done from the CLi.
The command is:
tunevv -usr_cpg “destination CPG” -tpvv “volume name to tune”
The switch -tpvv converts the volume to Thin Provisioned Virtual Volume”
The offline way would be to take a Physical Copy of the source volume and select TPVV, then unexport the old and export the new TPVV volume..which would involve downtime.
Musings from a past life 