[squid-users] Squid 5.2: assertion failed: Controller.cc:930: "!transients || e.hasTransients()"

[Alex Rousskov]

On 11/22/21 12:48 PM, David Touzeau wrote:
> Here our SMP configuration:
> 
> workers 2
> 
> cache_dir rock /home/squid/cache/rock 0 min-size=0 max-size=131072 slot-size=32000
> 
> if ${process_number} = 1
> memory_cache_mode always
> cpu_affinity_map process_numbers=${process_number} cores=1
> cache_dir    aufs    /home/squid/Caches/disk    50024    16    256 min-size=131072 max-size=3221225472
> endif
> 
> if ${process_number} = 2
> memory_cache_mode always
> cpu_affinity_map process_numbers=${process_number} cores=2
> endif
> 
> 
> where is the false settings ?

I am limiting my answer to the problems in this email thread scope: aufs
cache_dirs are UFS-based cache_dirs. UFS-based cache_dirs are not
SMP-aware and are not supported in SMP configurations. Your choices include:

* drop SMP (i.e. remove "workers" and ARA)
* drop aufs (i.e. remove "cache_dir aufs" and ARA)

... where ARA is "adjust the rest of the configuration accordingly".


HTH,

Alex.


> Le 22/11/2021 à 18:18, Alex Rousskov a écrit :
>> On 11/22/21 11:55 AM, David Touzeau wrote:
>>
>>> What does mean this error :
>>>
>>> 2021/11/21 17:23:06 kid1| assertion failed: Controller.cc:930:
>>> "!transients || e.hasTransients()"
>>> We are unable to start the service it always crashes.
>>> How can we can fix it ( purge cache , reboot )... ?
>> This is a Squid bug or misconfiguration. If you are using a UFS-based
>> cache_dir with multiple workers, then it is a misconfiguration. If you
>> want to use SMP disk caching, please use rock store instead.
>>
>> HTH,
>>
>> Alex.
>> P.S. This assertion has been reported several times, including for Squid
>> v4, but it was probably always due to a Squid misconfiguration. We need
>> to find a good way to explicitly reject such configurations instead of
>> asserting (while not rejecting similar unsupported configurations that
>> still "work" from their admins point of view).
>