[tor-relays] Sudend drop in Consensus Weight

Georg Koppen gk at torproject.org
Tue Apr 7 18:40:26 UTC 2020


Clément Février:
> Hello,
> 
> On April 5th, the consensus weight of my tor relay dropped to 0, see
> https://metrics.torproject.org/rs.html#details/33D88F331408141F2A2CC563239E54E48F7A211B
> 
> As far as I know, nothing specific happened, no update nor reboot.
> Nothing in the logs.
> Can anyone explain me what happened?

I think your relay got hit by one of the critical bugs in our sbws
(simple bandwidth scanner). We had some outage of Torflow bandwidth
scanners so that sbws ones got the majority when voting. We saw bugs
like #33775[1] as a result which affected a number of relays.

Looking at the current results for your relay it seems things getting
back to the previous state. That's due to some directory authority
operators either switching away from sbws to Torflow again or getting
Torflow going on their machines (again). (see Roger's mail yesterday[2]
for the different options we had in mind and my mail[3] today for the
state of sbws and our next steps in that area for more context)

Sorry for the inconvenience but things should go back to a normal level
rather soon,

Georg

[1] https://trac.torproject.org/projects/tor/ticket/33775
[2] https://lists.torproject.org/pipermail/tor-relays/2020-April/018337.html
[3] https://lists.torproject.org/pipermail/tor-relays/2020-April/018344.html

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