On Thu, Feb 02, 2017 at 03:41:19PM +0100, Filip Sneppe wrote:
Hi Jeffrey and others,
for (NFS) VMware datastores with some live VMs sitting on them: the cutover estimation from "vol move show" was reduced by 24 hours almost immediately
- I am quite sure those VMs will have been impacted as CPU and disk load
was pegged at 90+%).
You know about the -bypass-throttling true flag on the volume move command right? Again a super secret option oply available in diag mode. Without this, we find volume move takes forever.
This is our canned volume move command
set -privilege diag -confirmations off ';' volume move start -vserver "$svm" -volume "$volume" -destination-aggregate "$new_aggregate" \ -bypass-throttling true
Volume split also takes about a thousand years and I have not found a way to speed that up.
However, you can cheat by moving the new volume to another aggregate (as long as you disable the throttle). That effectively splits the volume but about 100 times quicker than waiting for the split to finish.
There seems to be a widespread issue with the builtin ONTAP throttles.
Regards, pdg