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To: "Greg 'groggy' Lehey" <grog@FreeBSD.org>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Sat, 16 Aug 2003 10:39:42 +0930."
             <20030816010942.GC8274@wantadilla.lemis.com> 
Date: Sat, 16 Aug 2003 09:10:01 +0200
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Subject: Re: cvs commit: src/sys/nfsclient bootp_subr.c nfs_diskless.c
	nfs_vfsops.c nfsdiskless.h 
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In message <20030816010942.GC8274@wantadilla.lemis.com>, "Greg 'groggy' Lehey" 
writes:
>>   Suggested replacement command sequence on the client:
>>
>>           dd if=/dev/zero of=/swapfile bs=1k count=1 oseek=100000
>>           swapon /swapfile
>>           rm -f /swapfile
>>
>>   For whatever value of 100000 you want.
>
>I'm confused.  Why was this necessary?  Which is the "magic" way?  Is
>the rm -f /swapfile really necessary, or just a foot guard?

The stuff removed made (yet) a magic mountpoint in the kernel and
didn't have any beneficial properties the above three commands
doesn't have too.

Removing the swapfile is means that the file dies on the server and
that nobody can write trash in it.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.