Date: Sun, 01 Aug 2010 12:45:30 -0700 From: Sean Bruno <seanbru@yahoo-inc.com> To: Ed Maste <emaste@freebsd.org> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: svn commit: r210561 - projects/sv/sys/net Message-ID: <1280691930.6985.2.camel@localhost.localdomain> In-Reply-To: <20100729210622.GA84094@sandvine.com> References: <201007281510.o6SFAV5J052045@svn.freebsd.org> <20100729210622.GA84094@sandvine.com>
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On Thu, 2010-07-29 at 14:06 -0700, Ed Maste wrote: > On Wed, Jul 28, 2010 at 03:10:31PM +0000, Attilio Rao wrote: > > > Log: > > Initial import of the netdump files. > > They still need a lot of polishing and cleanup so they might not be > > considered definitive at all. > > This code is a port to recent FreeBSD of Darrell Anderson's network > crashdump support, which was done in the 4.x days. I can't find a > current website with the original versions but archive.org has a cache > of course: > > http://web.archive.org/web/20041204223729/http://www.cs.duke.edu/~anderson/freebsd/netdump/ > > Quoting from the old readme: > > Netdump provides FreeBSD kernel crash dumping over the network. > Netdump is a FreeBSD kernel module client and user-level server. > > A normal kernel crash writes a raw dump of memory to a dedicated > partition (usually the swap partition) using a low-level disk routine, > and then copies that raw dump into a file (via savecore) during the > following boot process. > > Netdump replaces the standard dump routine. During a crash, a netdump > client broadcasts to locate a netdump server, then sends the dump as > UDP/IP packets (with retransmission after loss). The netdump server > creates a dump file suitable for gdb. If netdump fails (for example, > no netdump server is located), a normal disk dump is performed. > > There is cleanup work to be done still, but we plan to have this in > shape for 9.0. > > -Ed > _______________________________________________ Excellent. I'll start tracking this over here at Yahoo. Sean
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