psshyju wrote:
1) create new cpg
2) Tune existing VV to new cpg
3) Once moved then delete the Old CPG
Thats the procedure I am using today on Inserv 2.31, however if you do upgrade to 3.x you can use the tunesys command instead.
Regarding VMware, VMFS and zeroing... There are some options on the VMwares forums. One is to zero out the freespace from the console exactly as one would do in linux/unix. Instead of sdelete they use a dd command to create files loaded with zeros, then delete the files.
http://communities.vmware.com/message/1596020#1596020Code:
dd if=/dev/zero of=xxx.zero bs=X count=Y ; rm xxx.zero
Note: X has to be replaced with (1M,2M,4M or 8M) and Y with a multiple of X, e.g. dd if=/dev/zero of=xxx.zero bs=1M count=254, will create a 254 MB file with zeros
Remember to set the vv policy to zero_detect on the 3PAR luns first =)
To get space back from the CPG (LDs), you can run a compact CPG task from right clicking the CPG.
I have a question for you... since you do thin provisioning at the storage level, why type of VMDKs do you use? Do you use thin provisioning at the VM level as well?
Thanks, and I hope this helps.