On 27/10/2013 5:51 a.m., Ahmad wrote:
well , actually i dont use squid -k restart
but i do
1-
/usr/sbin/squid -k shutdown
/usr/sbin/squid -k shutdown
/usr/sbin/squid -k shutdown
to make sure it
This schedules 3x signals for shutdown in the kernel. It does take some
time for Squid to shutdown (shutdown_timeout config setting plus a few
seconds).
- The first signal begins squid graceful shutdown process. Equivalent to
SIGHUP
- The second arriving while that is hapening causes an immediate halt,
equivalent to SIGABRT (with all the same side effects as a crash.)
It is quite likely that this is where several of your cache problems are
coming from as process abort causes corruption of any incompletely
written objects.
- third signal goes nowhere because the kernel has no squid process running.
2-
then i start it by
/usr/sbin/squid
it equals to squid -k restart !
Not quite. With -k restart the coordinator explicitly schedules only one
signal to each worker then restarts itself.
The code is not quite there yet, but with -k restart the workers may
continue running existing transactions in a more graceful exit than they
can with a hard shutdown.
but after that when i type ps aux | grep squid ,
i find squid working !!!!
Yes you started it in step #2.
thats was the problem "in my analysis"
the solutino was ,
when dealing with smp options in squid , and i want to restart it ,
i must do
*killall -9 squid*
after that no squid running in the background
then its safe to run squid by
/usr/sbin/squid
OR, you must have more patience. How long did you wait for the shutdown
to complete? if it was more than 60 seconds there may be a problem which
needs to be sorted out differently (kill -9 is not the right long term
solution) but since you were getting the "Exiting normally" messages I
think it is working properly but slow.
thats what happed with me and it longed 2 days searching about no thing !!!!
now in the logs i dont see
*2013/10/26 18:36:58 kid2| Squid Cache (Version 3.3.9): Exiting normally.
2013/10/26 18:36:58 kid3| Squid Cache (Version 3.3.9): Exiting normally.*
You will only see that in the logs if the workers finished their
graceful -k shutdown or -k restart process.
Amos
