* Patrick Ben Koetter <postfix-users@postfix.org>: > * Will Yardley <post...@veggiechinese.net>: > > On Mon, Sep 15, 2014 at 04:54:11AM +0000, Viktor Dukhovni wrote: > > > * Your DNS resolution is not functioning, which could also > > > explain slow login, but in this case, you'd generally max > > > out the smtpd(8) process limit. > > > > Yes, this one occurred to me too, but I did test that specifically, and > > it doesn't seem to be the issue. The systems have local unbound and > > rbldnsd instances running, and name resolution appears to be functioning > > quickly on the system. > > Are you using unbound on a RedHat system? > > If that's the case you might notice syslog messages claiming syslog can't use > /dev/log because the device is busy. That's because unbound's init-skript > bind-mounts /dev/log to /var/cache/unbound/dev/log (?) but fails to unmount it > correctly. > > In that case stop unbound, unmount the bind mount several times (!) until you > get an ummount error message and then restart rsyslog and unbound. Things > should be back to normal then.
A good way to check if this bug applies to your case is to "cat /proc/mounts | grep unbound". As you can see there are several mounts in place in my example: devtmpfs /var/unbound/dev/log devtmpfs rw,seclabel,relatime,size=12288184k,nr_inodes=3072046,mode=755 0 0 devtmpfs /var/unbound/dev/random devtmpfs rw,seclabel,relatime,size=12288184k,nr_inodes=3072046,mode=755 0 0 devtmpfs /var/unbound/dev/log devtmpfs rw,seclabel,relatime,size=12288184k,nr_inodes=3072046,mode=755 0 0 devtmpfs /var/unbound/dev/random devtmpfs rw,seclabel,relatime,size=12288184k,nr_inodes=3072046,mode=755 0 0 devtmpfs /var/unbound/dev/log devtmpfs rw,seclabel,relatime,size=12288184k,nr_inodes=3072046,mode=755 0 0 devtmpfs /var/unbound/dev/random devtmpfs rw,seclabel,relatime,size=12288184k,nr_inodes=3072046,mode=755 0 0 devtmpfs /var/unbound/dev/log devtmpfs rw,seclabel,relatime,size=12288184k,nr_inodes=3072046,mode=755 0 0 devtmpfs /var/unbound/dev/random devtmpfs rw,seclabel,relatime,size=12288184k,nr_inodes=3072046,mode=755 0 0 -- [*] sys4 AG https://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein
