Date: Sun, 22 Nov 1998 10:43:52 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Robert Watson <robert@cyrus.watson.org> Cc: Thierry Besancon <Thierry.Besancon@lps.ens.fr>, besancon@lps.ens.fr, hackers@FreeBSD.ORG Subject: Re: Mounting MFS without a swap partition Message-ID: <199811221843.KAA29870@apollo.backplane.com> References: <Pine.BSF.3.96.981122124212.8311A-100000@fledge.watson.org>
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You can run mount_mfs using a file for backing store. The 'device' specification is virtually irrelevant, it is simply used by mfs_mount to get default filesystem parameters I believe. It need not be swap. While it is possible to mount MFS with unbacked storage (i.e. when the system has no swap), I wouldn't recommend it. The memory space is still used up even if you rm files out of the MFS partition. If you *do* do this, make the MFS volume as small as possible. -Matt Matthew Dillon Engineering, HiWay Technologies, Inc. & BEST Internet Communications & God knows what else. <dillon@backplane.com> (Please include original email in any response) :On Sun, 22 Nov 1998, Thierry Besancon wrote: : :> About 2 months ago, you asked in questions@FreeBSD.ORG how to mount a MFS :> partition without any swap. :> I'm in the same configuration. :> :> Did you get any answer ? The thread in empty how your question... :> :> Thanks for any piece of information. : :Thierry, : :Unfortunately I never did receive a response about that. I'm CC'ing this :message to -hackers in the hopes of a suggestion. : :Essentially, the problem is as follows -- mount_mfs appears to require a :device that it can associate itself with; this is normally the name of the :swap device used. However, if you use vnconfig and a swap file, you do :not have a swap file exactly; or at least, you do, but apparently :mount_mfs does not like vn0b. Does anyone have any suggestions as to how :to go about doing this when using only swap files on a machine? : : Robert N Watson To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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