Subject: Re: README: changes to config, to support dump device configuration
To: Jason Thorpe <>
From: Jonathan Stone <jonathan@DSG.Stanford.EDU>
List: current-users
Date: 06/14/1997 17:16:52
On: Sat, 14 Jun 1997 16:53:55 -0700, Jason Thorpe <>

>It follows the same rules as the old "wildcarded swap" device used to...
>        If root device is a disk, dumps go on partition 'b' of that
>        disk.  Else, disable dumps.
>Swap is now totally unrelated to dumps.


Does the kernel _really_ do a coredump dump on a b partition,
regardless of the partition type in the disklabel?

Since swap is now optional, reserving b partitions for swap is
presumably optional. Therefore reserving B partitions for _dumps_
(which is, historically, just a side-effect of them being swap
devices) should be optional too.

I think it'd be safer and more correct to only do wildcarded dumps
onto B partitions that are labelled as type `swap'.


> config netbsd root on ? type ? dumps on ?
>         - wildcarded root, fstype, and dump device

might dump on a B partition that's in use as a filesystem, and that
would be a bug.