Date: Fri, 30 Dec 2005 10:34:26 -0800 From: David Kirchner <dpk@dpk.net> To: FreeBSD Questions <questions@freebsd.org> Subject: Developer's Handbook DDB instructions Message-ID: <35c231bf0512301034g4de5a2fevc48721188863c818@mail.gmail.com>
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I'm trying to track down a background fsck deadlock bug. I've found a thread on groups.google.com about another person having a similar problem but with snapshots. The suggestion made there was to compile a kernel with DDB, and the user was referred to the Developer's Handbook. http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kernel= debug-online-ddb.html The Handbook appears to be out of date -- it states that you have to add "options DDB" to the kernel config to enable DDB. When you try that, part way through the make depend process it informs you that you also need KDB. Are there any other steps necessary to get DDB to work on a newer version of FreeBSD (say 6.0-RELEASE)? Since this particular deadlock test will probably take 12+ hours of runtime to trigger, I'd like to get this right, so I can get as much information as possible into a PR.
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