[notice] The Tor Directory Consensus has changed how many circuits we must track to detect network failures from 0 to 20.
Running Tor 0.2.8.9 under Yawning's sandboxed-tor-browser, I got this strange log message:
2016/12/13 15:48:04 tor: Dec 13 20:48:04.000 [notice] The Tor Directory Consensus has changed how many circuits we must track to detect network failures from 0 to 20.
I haven't seen it before. Also, my system ran out of disk space for a while before this notice came up.
A) I don't think the consensus changed its parameter here, so it's weird that my Tor thinks it did. 20 is the default:
or.h:#define CBT_DEFAULT_RECENT_CIRCUITS 20
So where did 0 come from?
B) If "A" remains a mystery, we should make sure there isn't some underlying bug where for example Tor starts ignoring things in the consensus after an event like
2016/12/13 13:48:04 tor: Dec 13 18:48:04.000 [warn] Error writing to "/home/amnesia/tor/data/cached-microdesc-consensus": No space left on device