Yeah, this is nutty.
The older version of software shows EPC NOT being enabled. I've tried changing the EPC settings and received the same error
"Failed to send EPC command to /dev/sg7". I will power-cycle the server (and clear the read error).
The process that logs the error? Looks like it might be SMART related. The other drives log SMART at about the same time.
The way I figure it - if it happens again, I'll replace the disk controller. I have until Feb 1 to send my replacement back, although since I'm seeing the same exact issue on different drives and different ports (but the same controller) the only thing left is the controller.
Either that, or snag another VN0022..
The only other thing would be to install RC2 or backrev...
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UPDATE::
Yep. Nutty. Need beers nutty.
Seems that my drive letters changed. Low current spinup has changed from Disabled to Ultra Low Enabled (FWIW - same settings as is on my VN0022 drives). EPC does not show as enabled. Guess I need to try setting the Low Current spinup, reboot and see what happens.
It appears that although disabling EPC "didn't work", something did. Guess it is a feature, not a bug.
UPDATE #2:
Was able to disable Low Current Spinup. Rebooted and have verified that Low Current Spinup is disabled and EPC is not enabled. Time to wait and see what breaks.
<EDIT>
Shout-outs for the help. Thanks!