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Re: [tor-bugs] #21969 [Core Tor/Tor]: We're missing descriptors for some of our primary entry guards
#21969: We're missing descriptors for some of our primary entry guards
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Reporter: asn | Owner: asn
Type: defect | Status: assigned
Priority: High | Milestone: Tor: 0.3.1.x-final
Component: Core Tor/Tor | Version:
Severity: Normal | Resolution:
Keywords: tor-guard, tor-bridge | Actual Points:
Parent ID: | Points: 1.5
Reviewer: | Sponsor: SponsorU
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Comment (by s7r):
OK getting close.
So I have manually edited my state file and added a guard I control as
first primary guard with `confirmed_idx=0`. It was running just fine with
no complaints. At some point, I have configured in torrc of the guard
'''PublishServerDescriptor 0''' so that it will stop publishing
descriptors. The client instance running the debug branch did not complain
instantly because it had a descriptor that was still valid, and the first
primary guard while not wanting to publish descriptors any longer was
still running and accepting connections.
You can see in the log file that after the descriptor expired, it started
to panic and never recovered even after ~ 3 consensuses. Also, the cutoff
did happen, many many complains about not being able to do first hop in a
rendezvous circuit (bad).
Here is what the state file says about the primary guard we are talking
about at the time of the cutoff:
{{{
Guard in=default rsa_id=0C2E555864546F1B3DDC4BE71573B8CC5DD898EE
nickname=AmnesicProsecutor sampled_on=2017-05-13T20:25:19
sampled_by=0.3.1.0-alpha-dev listed=1 confirmed_on=2017-05-16T01:45:08
confirmed_idx=0 pb_use_attempts=69.854044 pb_use_successes=69.854044
pb_circ_attempts=234.410156 pb_circ_successes=231.287109
pb_successful_circuits_closed=229.161133 pb_collapsed_circuits=2.125977
pb_timeouts=8.331055
}}}
I have also discovered some other things while testing this, not directly
related, but I'll do a separate ticket so this one won't get to messy to
follow up.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21969#comment:27>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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