Just had a power outage which took out all the street ( and possibly more ).
All the servers and network stuffs came back up OK, and the various PCs too.
But the phones were not happy.
Sad bootloader faces on them, unable to contact the Asterisk box.
It's not responding to pings, and I can't ssh into it.
Bah.
It's a headless box tucked away in a dark corner.
Rummage, rummage try to hook up a monitor and keyboard.
Hmm, root filesystem corruption, fsck failed to automatically fix it.
Cue 30 minutes of manual fsck-ing the filesystems.
Reboot, and crossed fingers.
Yay! Them inodes is all fixed up.
Initiate a global phone re-boot ( by power-cycling the PoE injector ), and all is well.
Telephony goodness is restored.