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# IRC, unknown channel, unknown date
<tschwinge> scolobb: In wiki edit 60accafa79f645ae61b578403f7fc0c11914b725
I see that you intend(ed) to use syslog for logging debug messages. I
thought I'd point you to
http://lists.gnu.org/archive/html/bug-hurd/2007-02/msg00042.html -- no
idea if that's still an issue or what went wrong at that time. Perhaps
you can have a look?
<scolobb> tschwinge: Thanks for information! Currently I'm logging some
debug messages to a simple file, but I'll now check whether the issue
you've pointed out is still present.
<scolobb> tschwinge: I am getting absolutely abnormal results: when I call
syslog() from a simple C program for the first time, the message goes to
the system log. However, any further calls to syslog() do just
nothing... I am able to send something to syslog only after reboot (it
doesn't help if I restart syslogd).
# IRC, freenode, #hurd, 2011-08-08
< pinotree> wow, `logger` + a simple C udp server can cause havoc
< pinotree> youpi: ever seen something like
http://paste.debian.net/hidden/72cf4b77/ ?
< pinotree> and then also other servers (like pflocal, pfinet, few more)
start becoming crazy (using 100% cpu)
< youpi> nope
< pinotree> iirc in one of the few tries i got the message "Resource lost."
from the closed ssh connection
< pinotree> i was trying to see why syslog doesn't work, but this basically
surprised me...
< pinotree> oh, i found an apparently working syslog daemon
< pinotree> dsyslog
< gg0> have you tried syslog-ng? IIRC it writes in /var/log/messages by
default.
< pinotree> yeah, it seems to stop receiving messages are few
< pinotree> gg0: are you using syslog-ng?
< gg0> pinotree: I should fire hurd vm up. I seem I kept dirty-patched
busybox syslog, I don't even know if it works, at least it starts
http://bugs.debian.org/636162
< pinotree> maintainer said "not really"
< gg0> well, if all other syslogs use shm and sems, they won't work too,
right?
< youpi> shm should work with the latest libc
< youpi> what won't is sysv sem
< youpi> (i.e. semget)
IRC, OFTC, #debian-hurd, 2011-11-02:
* pinotree sighs at #645790 :/
<tschwinge> pinotree: W.r.t. 645790 -- yeah, ``someone'' should finally
figure out what's going on with syslog.
http://lists.gnu.org/archive/html/bug-hurd/2008-07/msg00152.html
<tschwinge> pinotree: And this...
http://lists.gnu.org/archive/html/bug-hurd/2007-02/msg00042.html
<pinotree> tschwinge: i did that 20 invocations tests recently, and
basically none of them has been logged
<pinotree> tschwinge: when i started playing with logger more, as result i
had some server that started taking all the cpu, followed by other
servers and in the end my ssh connection were dropped and i had nothing
to do (not even login from console)
<tschwinge> pinotree: Sounds like ``fun''. Hopefully we can manage to
understand (and fix the underlying issue) why a simple syslog()
invocation can make the whole system instable.
<pinotree> tschwinge: to be honest, i got havoc in the system when i told
syslog to manually look for /dev/log (-u /dev/log), possibly alao when
telling to use a datagram socket (-d)
<pinotree> but even if a normal syslog() invocation does not cause havoc,
there's still the "lost messages" issue
<tschwinge> Yep. What I've been doing ever since, is deinstall all
*syslog* packages.
<tschwinge> This ``fixed'' all syslog() hangs.
# IRC, freenode, #hurd, 2012-03-28
<braunr> i can see lots of CRON processes hanging around
<braunr> pinotree: crontab -l was hanging too when trying to quickly see
what went wrong
<braunr> so it may be an unreleased lock of some kind
<antrik> braunr: do you have syslog installed by any chance?...
<antrik> IIRC that bug has never been fixed :-(
<braunr> yes syslogd is running
<antrik> that's probably the culprit then
<braunr> ok
<braunr> i'll just disable it for now then
<antrik> the error has existed for years
<antrik> was similar for me though: for a long time I have been hearing
about this issue, and only suddenly I started experiencing it myself...
<antrik> it depends on how many things are actually logged. IIRC the hang
happens when some client sends 128 messages to syslog or something like
that
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