[squid-users] With Squid 6.5 -- ERROR: Failed to unpack Store entry metadata: swap meta MD5 mismatch?

[Francesco Chemolli]

Hi Carl,
  a quick search led me to
https://wiki.squid-cache.org/SquidFaq/InnerWorkings#what-does-swapin-md5-mismatch-mean


Quoting: "You do not need to worry about this warning. It means that Squid
is double-checking that the disk file matches what Squid thinks should be
there, and the check failed. Squid recovers and generates a cache miss in
this case."

If the issue persists after extended usage, it might indicate a bug in
Squid's cache handling.

On Fri, Dec 8, 2023 at 11:05 PM Carl Vuosalo <cvuosalo at cern.ch> wrote:

> We updated from Squid 5.9 to Squid 6.5, and then immediately started
> seeing many of these new errors in the cache.log:
>
> 2023/12/08 23:26:52 kid1| ERROR: Failed to unpack Store entry metadata:
> swap meta MD5 mismatch
>      exception location: SwapMetaIn.cc(89) CheckSwapMetaKey
>      current master transaction: master3394333
>
> Can anyone suggest what these errors might mean? I looked at the source
> code line indicated, but I couldn't understand what the issue might be.
>
> Thanks.
>
>
> ---Carl
>
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-- 
    Francesco
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