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From: Steven Hartland <smh@FreeBSD.org>
Date: Wed, 18 Nov 2015 09:42:37 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r291012 - head/sys/boot/common
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Author: smh
Date: Wed Nov 18 09:42:36 2015
New Revision: 291012
URL: https://svnweb.freebsd.org/changeset/base/291012

Log:
  Document loader(8) dumpdev option
  
  Add an entry for dumpdev environment variable to loader(8).
  
  MFC after:	1 week
  Sponsored by:	Multiplay

Modified:
  head/sys/boot/common/loader.8

Modified: head/sys/boot/common/loader.8
==============================================================================
--- head/sys/boot/common/loader.8	Wed Nov 18 06:25:25 2015	(r291011)
+++ head/sys/boot/common/loader.8	Wed Nov 18 09:42:36 2015	(r291012)
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 25, 2015
+.Dd November 18, 2015
 .Dt LOADER 8
 .Os
 .Sh NAME
@@ -471,6 +471,14 @@ userland output (e.g.\& from
 .It Va currdev
 Selects the default device.
 Syntax for devices is odd.
+.It Va dumpdev
+Sets the device for kernel dumps.
+This can be used to ensure that a device is configured before the corresponding
+.Va dumpdev
+directive from
+.Xr rc.conf 5
+has been processed, allowing kernel panics that happen during the early stages
+of boot to be captured.
 .It Va init_chroot
 If set to a valid directory in the root file system, it causes
 .Xr init 8