System Panics and Core Dump help
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Just trying to get a heads up if I'm going about this in the right way, if I've understood what I've read and applied, outlined below. I read an article at Onlamp on how to prepare for system panics and core dumps. Article here: http://www.onlamp.com/pub/a/bsd/2002/03/21/Big_Scary_Daemons.html?page=2 After rebuilding my kernel with the options KDB options DDB makeoptions DEBUG=-g I copied kernel.debug to /var/crash/kernel.debug.date for future use. I added the following below to /etc/rc.conf, leaving the dump directory at its default /var/crash in /etc/defaults/rc.conf: dumpdev=/dev/amrd0s1b (this is my swap partition) savecore_flags=-z (added flag for compression) Now, in /var/log/messages, I get: savecore: unable to open bounds file, using 0 savecore: no dumps found Am I right in assuming that the system's doing exactly what it's supposed to do? That is, checking for a dump when booting, not finding any, reporting as much, and proceeding booting as usual? I assumed that, even though the message is a bit misleading to a relative newbie like myself, after reading the following at another web site: - PROBLEMS AND REMEDIES No Dump Was Saved Cause: The system may have shut down successfully. Remedy: No dump is expected. Core dumps are only created for abnormal shutdowns. - --- Thanks for any help, advice and clarification. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCnWMRy0Ty5RZE55oRAoIdAKDLBzHivK8U0f+sagqNMcmPG3YF4wCdETzG noqTYEnxXHRrfcNtRzA4oYA= =VBh0 -END PGP SIGNATURE- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: System Panics and Core Dump help
On Wednesday, 1 June 2005 at 2:25:56 -0500, Denny White wrote: Just trying to get a heads up if I'm going about this in the right way, if I've understood what I've read and applied, outlined below. I read an article at Onlamp on how to prepare for system panics and core dumps. Article here: ... Now, in /var/log/messages, I get: savecore: unable to open bounds file, using 0 savecore: no dumps found Did you get a dump? Otherwise the second message is normal. The first one is harmless, and should only occur on the first real dump. Am I right in assuming that the system's doing exactly what it's supposed to do? That is, checking for a dump when booting, not finding any, reporting as much, and proceeding booting as usual? Assuming that you didn't write a dump, yes. Greg -- When replying to this message, please copy the original recipients. If you don't, I may ignore the reply or reply to the original recipients. For more information, see http://www.lemis.com/questions.html The virus contained in this message was not detected. Finger [EMAIL PROTECTED] for PGP public key. See complete headers for address and phone numbers. pgpeFVFj2K56D.pgp Description: PGP signature
Re: System Panics and Core Dump help
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Okay, didn't get a dump. Everything's fine on the system. I was just trying to follow how to be prepared for a panic, crash, etc., to be able to do a backtrace and have info to give someone trying to help debug the kernel. First time I rebooted after adding the new settings, I got: unable to open bounds file, using 0 no dumps found And to the best of my knowledge, there was no bounds file in /var/crash. Now there is, size is 2k has an internal value of 5. Also, now when I boot, I get: Checking for core dump on /dev/amrd0s1b no dumps found And, after rebooting again, I see that the internal value of /var/crash/bounds has been incremented by 1, so now it's at 6. I read where it does that each time it checks it. Only reason I bugged anyone on the mailing list about this was I'm still a relative newbie didn't want to trash all the work I'd done with my experimenting before getting it where it could be fixed if I did. :) So, as best as I can see it, it's doing just what it's supposed to do. Thanks for helping me clear that up, Greg. On Wed, 1 Jun 2005, Greg 'groggy' Lehey wrote: On Wednesday, 1 June 2005 at 2:25:56 -0500, Denny White wrote: Just trying to get a heads up if I'm going about this in the right way, if I've understood what I've read and applied, outlined below. I read an article at Onlamp on how to prepare for system panics and core dumps. Article here: ... Now, in /var/log/messages, I get: savecore: unable to open bounds file, using 0 savecore: no dumps found Did you get a dump? Otherwise the second message is normal. The first one is harmless, and should only occur on the first real dump. Am I right in assuming that the system's doing exactly what it's supposed to do? That is, checking for a dump when booting, not finding any, reporting as much, and proceeding booting as usual? Assuming that you didn't write a dump, yes. Greg -- When replying to this message, please copy the original recipients. If you don't, I may ignore the reply or reply to the original recipients. For more information, see http://www.lemis.com/questions.html The virus contained in this message was not detected. Finger [EMAIL PROTECTED] for PGP public key. See complete headers for address and phone numbers. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCnd8Cy0Ty5RZE55oRAsYeAKCncUDXMAlnnT45hWHtn7TLK9/QdACeOVgQ rSSLP5BqgFAxeY5ICufJcrw= =QJke -END PGP SIGNATURE- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
