FC5 system hanging, is cyrus the culprit?

[Mike]

On Thu, 28 Dec 2006, Mike might have said:

> Morning,
> 
> I have an up to date FC5 box that runs openldap, samba, cyrus,
> mysql, and bacula. This box recently started hanging in general,
> not responding to ssh nor telnet logins, any active session when
> the hanging started would also hang if I issued any command that
> talked to the filesystem. I could do tails on files (/var/log/messages)
> that I knew exist, and I could do a 'df -k', but the session would
> hang if I did a 'ls -ltr' (to see the most recently changed file).
> 
> I thought I had a filling file system. I use and monitor syslog
> quite heavily and thought /var was filling and causing problems
> with ldap (/var/lib/ldap) or named (/var/lib/named). I moved these
> files to their own file systems and mount points to prevent problems.
> 
> The last time the box froze (last night) I could see that none of
> the file systems were full. Last night I stopped bacula, saslauthd,
> and cyrus-imapd. The box stayed up last night.
> 
> Could cyrus be a problem. I have nothing in any logs when the
> system hangs. What can I look for?
> 
> Mike
> 
> [mikee at host ~]$ rpm -qa | grep cyrus
> cyrus-imapd-2.3.1-2.7.fc5
> cyrus-sasl-lib-2.1.21-10
> cyrus-sasl-2.1.21-10
> cyrus-sasl-ldap-2.1.21-10
> cyrus-sasl-devel-2.1.21-10
> cyrus-imapd-devel-2.3.1-2.7.fc5
> cyrus-imapd-utils-2.3.1-2.7.fc5

The problem is not cyrus, but rather as mentioned before on the list
it was my backup system getting caught into a recursive hell of
symlinks (FC5 /var/named/chroot/proc is my guess).

Mike