svn commit: r210561 - projects/sv/sys/net

[Sean Bruno]

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