Kernel crash dumps and swap

[John Dison]

So if I use dumpdev="/path/to/dev" I can have kernel crash dumps without swap enabled?This should be clarified in documentation IMO, right now I have an impression that swap is mandatory for crash dumps to work.

      From: Steven Hartland <killing at multiplay.co.uk>
 To: freebsd-hackers at freebsd.org 
 Sent: Friday, September 4, 2015 1:28 PM
 Subject: Re: Kernel crash dumps and swap
   
That's correct as the default for dumpdev="auto" in rc.conf is for dump 
to use swap devices, so in order for dump to locate a device to dump to 
in this case swap must be enabled.