Re: [Mimedefang] mimedfang processes not dying
[EMAIL PROTECTED]
> Hi all,
>
> I'm seeing a strange behavior in mimedefang, I can kill
> mimedefan-multiplexor but cannot kill mimedefang itself, other then
> sending it a kill -9, running linux kernel 2.4.26 with procps 3.2.1,
> mimedefang compiled using gcc 3.3.3 with glibc 2.3.3, here are the
> details:
>
[snipped for brevity ]
Sorry... for replying to my own post, but I spent a few hours looking for
more clues, heres what I've found, when mimedefang starts it spawns 2
child processes:
# pstree -p | grep mime
|-mimedefang(5268)---mimedefang(5269)---mimedefang(5270)
The parent is constantly doing 'select', the 1st child is doing 'poll' and
the 2nd child is in 'rt_sig' state.
# ps -Alw -y -H | grep mime
S UID PID PPID C PRI NI RSSSZ WCHAN TTYTIME CMD
S 125 5268 10 69 0 760 1009 select ?
00:00:00 mimedefang
S 125 5269 5268 0 69 0 760 1009 poll?
00:00:00 mimedefang
S 125 5270 5269 0 69 0 760 1009 rt_sig ?
00:00:00 mimedefang
Doing an strace on each process shows the same thing, except for the last
child, 5270 which doesnt seem to be doing anything at all:
# strace -p 5268
process 5268 attached - interrupt to quit
select(7, [6], NULL, [6], {1, 27}) = 0 (Timeout)
select(7, [6], NULL, [6], {5, 0} ) = 0 (Timeout)
select(7, [6], NULL, [6], {5, 0} ) = 0 (Timeout)
etc...
#strace -p 5269
process 5269 attached - interrupt to quit
getppid()=0
poll{[{fd=4, events=POLLIN}], 1, 2000) =0
getppid()=0
poll{[{fd=4, events=POLLIN}], 1, 2000) =0
etc..
# strace -p 5270
process 5270 attached - interrupt to quit
and nothing is shown...
Now if I send a kill signal to the parent (5268) nothing occurs, but if I
kill the 2nd child, (5270), mimedefang shutsdown and goes away.
What does 'rt_sig' mean?
Has anyone seen this behavior before?
Can anyone help me with this please, I've tryed upgrading to kernel 2.4.28
rebuilding mimedefang v2.49, downgrading to 2.48...
I'm really at a loss here and I'm willing to try anything.
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[Mimedefang] mimedfang processes not dying
Hi all,
I'm seeing a strange behavior in mimedefang, I can kill
mimedefan-multiplexor but cannot kill mimedefang itself, other then
sending it a kill -9, running linux kernel 2.4.26 with procps 3.2.1,
mimedefang compiled using gcc 3.3.3 with glibc 2.3.3, here are the
details:
Using the init script from the EXAMPLES directory I started mimedefang, it
launced mimedefang-multiplexor along with 3 mimedefangs:
# /etc/rc.d/init.d/mimedefang start
Starting mimedefang-multiplexor:
[ OK ]
Starting mimedefang:
[ OK ]
# ps -ef | grep mime
defang1943 1 0 11:40 ?00:00:00
/usr/bin/mimedefang-multiplexor -p
/var/spool/MIMEDefang/mimedefang-multiplexor.pid -m 2 -x 10 -U defang -b
600 -l -s /var/spool/MIMEDefang/mimedefang-multiplexor.sock
defang1956 1 0 11:40 ?00:00:00 /usr/bin/mimedefang -P
/var/spool/MIMEDefang/mimedefang.pid -m
/var/spool/MIMEDefang/mimedefang-multiplexor.sock -U defang -p
/var/spool/MIMEDefang/mimedefang.sock
defang1957 1956 0 11:40 ?00:00:00 /usr/bin/mimedefang -P
/var/spool/MIMEDefang/mimedefang.pid -m
/var/spool/MIMEDefang/mimedefang-multiplexor.sock -U defang -p
/var/spool/MIMEDefang/mimedefang.sock
defang1958 1957 0 11:40 ?00:00:00 /usr/bin/mimedefang -P
/var/spool/MIMEDefang/mimedefang.pid -m
/var/spool/MIMEDefang/mimedefang-multiplexor.sock -U defang -p
/var/spool/MIMEDefang/mimedefang.sock
So there is the mimedefang-multiplexor and 3 mimedefang processes running,
the multiplexor has process id 1943, and the 3 mimedfangs have 1956, 1957,
1958 as their process ids, looking into /var/spool/MIMEDefang/ for the
.pid files I see:
# cat mimedefang-multiplexor.pid
1943
# cat mimedfang.pid
1956
Process ids 1957 and 1958 are missing from mimedefang.pid file - so when I
try to stop mimedefang I get:
# /etc/rc.d/init.d/mimedefang stop
Shutting down mimedefang:
[ OK ]
Shutting down mimedefang-multiplexor:
[ OK ]
The mimedefang-multiplexor is gone, but the 3 mimedefang processes are
still there, and the .pid files are gone.
# ps -ef |grep mime
defang1956 1 0 11:40 ?00:00:00 /usr/bin/mimedefang -P
/var/spool/MIMEDefang/mimedefang.pid -m
/var/spool/MIMEDefang/mimedefang-multiplexor.sock -U defang -p
/var/spool/MIMEDefang/mimedefang.sock
defang1957 1956 0 11:40 ?00:00:00 /usr/bin/mimedefang -P
/var/spool/MIMEDefang/mimedefang.pid -m
/var/spool/MIMEDefang/mimedefang-multiplexor.sock -U defang -p
/var/spool/MIMEDefang/mimedefang.sock
defang1958 1957 0 11:40 ?00:00:00 /usr/bin/mimedefang -P
/var/spool/MIMEDefang/mimedefang.pid -m
/var/spool/MIMEDefang/mimedefang-multiplexor.sock -U defang -p
/var/spool/MIMEDefang/mimedefang.sock
When doing a kill the process does not die. Only a kill -9 kills mimedefang.
I'm running linux kernel 2.4.26 with procps 3.2.1, I compiled mimedefang
using gcc 3.3.3 with glibc 2.3.3, the configure line is simply:
./configure --prefix=/usr
make
make install
Running strace on its I just see the following:
select(7, [6], NULL, [6], {5, 5}= 0 (Timeout)
select(7, [6], NULL, [6], {5, 0} = 0 (Timeout)
select(7, [6], NULL, [6], {5, 0} = 0 (Timeout)
select(7, [6], NULL, [6], {5, 0} = 0 (Timeout)
Nothing gets reported when I try to kill the process, it just continues to
print select.
What could be wrong?
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