Problems with power management, disk spindown does not work

[Paul Donehue]

Im trying to build a power friendly ZFS server and am having some problems getting my system to power down disks. I have edited the power.conf as shown below.

I dont think the problem is with the settings, but with some service or process that keeps pinging the zraid2 pool disks every ten seconds and preventing it from sleeping.

I saw some similar posts suggesting fvm service might be the culprit and I tried disabling it:

svcadm disable fvm

But the pings still happened, but now every 10 seconds it seems instead of 5??

I tried running powertop but nothing looked suspicious.

Im hoping somebody has some suggestions how to move forward and debug this to find out what program is accessing the disk array.

Any pointers appreciated.

Kuma

# power.conf

autopm enable
autoS3 default
cpupm enable
cpu-threshold 1s

device-thresholds /scsi_vhci/***@g5000c5000fe00701 1m
device-thresholds /scsi_vhci/***@g5000c50010ca3dac 1m
device-thresholds /scsi_vhci/***@g5000c50010e68206 1m
device-thresholds /scsi_vhci/***@g5000c50014a3a78f 1m
device-thresholds /***@0,0/pci1458,***@11/***@2,0 1m
#device-thresholds /***@0,0/pci1458,***@11/***@5,0