This was odd, because nothing was using the UI and it seemed to be happening every ten mins or so. Then I found this in crontab:
Code: Select all
0-59/10 * * * * /etc/init.d/storage_usage.sh
Looking at the code, it repeatedly calls setcfg to (as far as I can tell) update storage usage (volumes, pools and iscsi). Isn't this a pretty fatal flaw in the OS design? From what I can tell, hard drives are never going to spin down unless you set a time of less than 10 mins and then they'll just spin up again in a few mins...