So, I'm getting ready for my 5.1 upgrade, and I need to set the vaules for QFullSampleSize and QFullThreshold for my array (3PAR). According to KB1008113, it looks like that procedure has changed:
In ESXi releases earlier than ESXi 5.1, QFullSampleSize and QFullThreshold are set globally, that is, on all devices seen by the ESXi host. In VMware ESXi 5.1, these parameter are not set globally because different vendors have different optimal values for their arrays. You set QFullSampleSize and QFullThreshold on a per-device level.
Run the following ESXCLI command:.
esxcli storage core device set --device device_name --queue-full-threshold
Q --queue-full-sample-size S
Settings are persistent across reboots.
You can retrieve the values for a device by using the corresponding list command.
esxcli storage core device list
The command supports an optional --device parameter.
esxcli storage core device list --device device
I think this is a great change. Would have helped me a while ago when I was migrating to this 3PAR array in the first place. But I'm looking for a way to make the vaules I set the default values for any disks I provision to my farm. I don't want to have to touch all of my hosts every time I provision a new disk to my system. Anyone have any ideas on how to do this? I can't find anything like the Path Selection Policies, where I can change the defaults. Heck, I would even be happy with being able to set the system to the "old" way and have it set globally per host.
Any advice would be appreciated. Thanks.