On Mon, Jul 19, 2010 at 05:04:18PM +0100, David Mayo wrote: > > When trying to diagnose the issue, on any attempt to run ps, prstat or > to HUP the syslogd process (to set the log level for imapd to "debug") > the command hangs and cannot be exited with Ctrl+C. Similarly, attempts > to kill the master process or shut down the system (even bypassing the > shutdown scripts by using "reboot") do not have any effect other than > hanging the shell in which the commands were issued. New shells can be > opened and certain commands run, but we aren't much closer to knowing > precisely what is wrong. The only way to bring the system back is to > reset it via the on board console. This happened to me about a year ago with Cyrus on a Solaris 10 server. The cause was a deadlock in one of the kernel ZFS modules. The problem is fixed in the current Solaris patches. -- -Gary Mills- -Unix Group- -Computer and Network Services- ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
