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Solved
System volume 'root' usage is 100 % and system is now inactive
My RN102 started to become unresponsive. I went to the logs and found the dreaded 'System volume 'root' usage is 100%' message and noticed that it had been occurring with increasing frequency. At t...
OK: looks Iike I was able to fix it.
Further research showed that the btmp records failed attempts to login to the system. I ran the command
last -f /var/log/btmp
and got a stream of messages like this:
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00)
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00)
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00)
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00)
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00)
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00)
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00)
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00)
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00)
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00)
root ssh:notty 43.229.53.59 Tue Oct 20 00:34 - 00:34 (00:00So it looks like someone was trying to brute force connect to my system.
I ran the command:
sudo > /var/log/btmp
and that cleared it out. I have access to my system now.
Now the challenge will be to figure out how to better protect my system. Maybe I'll just turn off remote access.
Thanks for the security tips, guys. It may be moot at this point.
After I got my system back, after doing a couple of things to check that data was OK, I did the upgrade from 6.2.4 to 6.4.0. That resulted in my volumes becoming inactive. I can't get to any volumes or any shares.
I've got a ticket open with support; first tier couldn't help - it's been escalated. It will be a while before I know the outcome.
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