On Tue, 6 Feb 2007, Craig Green wrote:
Charles Sprickman wrote:
Hi all,
I've been having this problem for quite some time and thought it might go
away after upgrading all our spamd/clamd boxes to FreeBSD 6.2 from 4.11.
It hasn't though... We use a maildrop recipe that uses the
clamd-stream-client to send messages over to a cluster of spam/virus
filtering boxes and we find that clamd sometimes hangs and stops taking any
new connections.
We've been running 6.x our scanner boxes for a while now, but it's only been
with the more recent security/clamav-devel port installs that we noticed a
problem much like this. Most connections to the daemon (made through
clamav-milter in our case) timed out, and the only way to bring down the
daemon was with a kill -9.
For us, the 20061029 devel snapshot was fine, but the current one (20061217)
has problems.
We never noticed a problem on 4.x, but it's been rather a while since we ran
clamd on that.
From the gdb trace you provided, it looks like clam is having issues with
the new libpthread threading library. This is what we figured our boxes were
having trouble with as well.
We've had success changing back to the older libthr library. Try dropping
this into /etc/libmap.conf:
That does it!
Is this something to work with the clamav people on or the FreeBSD folks?
Thanks,
Charles
------------
[clamd]
libc_r.so.5 libthr.so.2
libc_r.so.6 libthr.so.2
libthr.so.2 libthr.so.2
libpthread.so.1 libthr.so.2
libpthread.so.2 libthr.so.2
------------
If it works, great. If not, there's nothing more I can suggest. I don't
know why this works for us -- it was mostly a shot in the dark since the
issue appeared to be threading related and we knew FreeBSD 6 has seen a lot
of work done on the new threading library and there may still have been bugs
to work out or something. I know Perl, not C, so figuring out if the bug is
in clamd or in libpthread will take someone other than me.
I sort of meant to open up a bug about this; if switching to libthr works for
you, I guess I should.
Cheers,
Craig.
------
_______________________________________________
Help us build a comprehensive ClamAV guide: visit http://wiki.clamav.net
http://lurker.clamav.net/list/clamav-users.html
_______________________________________________
Help us build a comprehensive ClamAV guide: visit http://wiki.clamav.net
http://lurker.clamav.net/list/clamav-users.html
