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Subject: Re: dumpdev in loader.conf vs rc.d/dumpon
To: "Andrey V. Elsukov" <bu7cher@yandex.ru>,
 Slawa Olhovchenkov <slw@zxy.spb.ru>
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Cc: cem@FreeBSD.org, FreeBSD Current <freebsd-current@FreeBSD.org>,
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From: Andriy Gapon <avg@FreeBSD.org>
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Date: Thu, 24 Sep 2015 15:24:52 +0300
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On 24/09/2015 14:56, Andrey V. Elsukov wrote:
> 1. If you did set dumpdev from loader prompt or from /boot/loader.conf,
> and you didn't configured it in rc.conf, then this choice will be
> applied by geom_dev. Then it will be applied again by rc.d/dumpon.
> 
> 2. If you did set dumpdev from loader prompt or from /boot/loader.conf,
> and you did configured it in rc.conf, then first of will be selected
> dumpdev from loader, then will be selected one from rc.conf.
> 
> 3. If you didn't set dumpdev from loader prompt or from
> /boot/loader.conf, and you didn't configured it in rc.conf, then one of
> swap partition will be selected.
> 
> In the end we can see, if we apply the following patch, then nothing
> will be affected.

I like this.

> Index: dumpon
> ===================================================================
> --- dumpon	(revision 288047)
> +++ dumpon	(working copy)
> @@ -34,11 +34,6 @@ dumpon_start()
>  	[Nn][Oo] | '')
>  		;;
>  	[Aa][Uu][Tt][Oo])
> -		dev=$(/bin/kenv -q dumpdev)
> -		if [ -n "${dev}" ] ; then
> -			dumpon_try "${dev}"
> -			return $?
> -		fi
>  		while read dev mp type more ; do
>  			[ "${type}" = "swap" ] || continue
>  			[ -c "${dev}" ] || continue
> 
> 
> PS. loader(8) has many variables where device name is used, and none of
> them uses /dev/ prefix.
> 


-- 
Andriy Gapon