On 2008-07-14, clifford bailey <[EMAIL PROTECTED]> wrote: > First question: We have the machine left in its failed state at the > moment. Is there a signal I can send it over the serial port to get the > machine to panic before rebooting it (to give us as much information as > possible)?
Depends whether you A) have it set to use serial console and B) have already set ddb.console=1 in sysctl.conf. If both those things are true, send it a break over the serial port to enter DDB. N.B. whether ddb.console with serial console is useful depends on what you have on the serial port; some devices send a break when they reboot, which is not quite what you want, unless you want to find out your terminal server rebooted by noticing all the attached devices need you to "continue"... (as an aside, this seemed like knowledge worth passing on: if you've got a serial port, maybe a USB-RS232 adapter, that doesn't let you send break, apparently sending a single NULL at 50baud emulates it for some devices).
