Power Outage kernel message

[marcevan]

My hood lost power yesterday and it came back in an hour or so. I came back to find my freeNAS completely off so I powered it on.

This AM, my local security email showed:

> CPU: AMD A4-6300 APU with Radeon(tm) HD Graphics (3700.06-MHz K8-class CPU)
> Timecounter "TSC-low" frequency 1850030743 Hz quality 1000
> WARNING: /data was not properly dismounted

which I believe is 100% about the power off.

So far I did a scrub and see no issues disk issues and while I contemplate a small UPS, I believe this is all par for the course?

 

[cyberjock]

"par for the course" varies widely. Some people will get your message and nothing else while others will have an unbootable USB stick.

 

[marcevan]

Indeed our mileages do vary.

I would take an unbootable USB over a corrupted disk all day every day, but thankfully no disk issues after a series of tests.

Important point is that freeNAS is not a viable backup solution but since our mileage does vary we need to have means to fix what broke. Luckily for me, nothing (so far).

Emergency kit includes:
1. 2 spare drives
2. Weekly backup of config file
3. Incremental crashplan backups
4. Spare SATA wires

I don't think spare mobos and cpus are viable so the above should work well.

 

[cyberjock]

There's a How-To guide on checking the consistency of your config file every night that I wrote. You could use it's command to determine if the config file is corrupt or not. You know, just to make sure it's still okay. ;)