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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.cs.su.oz.au!metro!metro!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!howland.erols.net!www.nntp.primenet.com!nntp.primenet.com!nntp.uio.no!nntp.zit.th-darmstadt.de!fu-berlin.de!uniol!uni-erlangen.de!news.tu-chemnitz.de!irz401!orion.sax.de!uriah.heep!news From: j@uriah.heep.sax.de (J Wunsch) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: crash boot disks - I did it - now for some tuning... Date: 25 Oct 1996 08:41:25 GMT Organization: Private BSD site, Dresden Lines: 31 Message-ID: <54pufl$897@uriah.heep.sax.de> References: <540mdt$hsl@snoopy.microtronic.de> <5496at$c8@uriah.heep.sax.de> <54fbd5$2im@snoopy.microtronic.de> <54jkfr$k3o@uriah.heep.sax.de> <54oib0$lq8@snoopy.microtronic.de> Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) NNTP-Posting-Host: localhost.heep.sax.de Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: knews 0.9.6 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E us@microtronic.de (Ulf Schmidt) wrote: > >Try a DDB kernel, this gives you the added feature of a `ps' command > >inside DDB. Perhaps this might get you further. > hate to ask, but: What is a DDB kernel, and how do I create it? ``options DDB'' in your kernel config file. It includes the online kernel debugger. See the handbook section about kernel debugging and the man page ddb(4) for usage instructions. The purpose for you will be that you can hit Ctrl-Alt-ESC (or is it Ctrl-ScrLk in syscons? dunno), and it will yank you to the debugger prompt. From there, you can issue commands like `ps' to see what's happening, or `trace' to see the stack. > I can now create a backup using tar off a running system, and can > restore it complete with 3 disks and the backup-tar somewhere on the > local network. Be careful with tar. It's been causing serious troubles for us in some situation (where the exact details have not been reproducible afterwards), in particular when used with a umask != 0. dump and restore are _way_ better in this respect. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)