On 2024-10-03 11:10, Andrea Venturoli wrote:
> Out of 10 installations, ... on one it's very frequent.
> Any idea on what to check or try? ... Any way to get better logs?
Since the problem is frequent on that one host, I recommend privately
sharing[1] a pointer to compressed debugging cache.log collected while
the problem was happening. Either set debug_options to ALL,9 or use a
pair of "squid -k debug" commands to start/stop debugging. More hints at
https://wiki.squid-cache.org/SquidFaq/BugReporting#debugging-a-single-transaction
It is enough to record one or two problematic cases.
Please make sure to patch your Squid with 6567eac.patch you reference
below before collecting those logs -- we do not want to analyze a
known/fixed bug.
HTH,
Alex.
[1]: You can share that sample with me or anybody you trust (who can
analyze Squid debugging logs and is willing to help you).
I've got several machines with the following software:
FreeBSD 13.3, 13.4 or 14.1
Squid 6.10
c-icap 0.5.12
SquidClamav 7.3
ClamA: 1.3.2
This combination usually works pretty well, but it occasionally chokes,
with the client seeing:
ICAP protocol error
The system returned: [No Error]
Out of 10 installations, 7 works perfecly (at least that I know), a
couple very seldom have shown this error, but on one it's very frequent.
I checked the logs:
_ i think Squid's access log shows a NONE_NONE/500 code at the time of
the error: I personally can't get anything useful from this, but maybe
someone with better insight can tell?
_ cache.log does not seem to show anything related;
_ neither c-icap's, nor ClamAV's logs show anything useful.
I already applied the following patch:
https://github.com/measurement-factory/squid/commit/6567eac.patch
On one host that had always worked perfeclty, but suddenly had started
giving this trouble several time per hours, it almost solved (i.e. I
think the error was seen once in the latest few months).
However, it didn't help on the most problematic host.
Any idea on what to check or try? Any other known bug? Any way to get
better logs?
bye & Thanks
av.
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