Date: Sat, 08 Aug 1998 15:11:31 -0700 From: Mike Smith <mike@smith.net.au> To: zhihuizhang <bf20761@binghamton.edu> Cc: hackers <freebsd-hackers@FreeBSD.ORG> Subject: Re: Questions about MFS_ROOT and MFS_AUTOLOAD Message-ID: <199808082211.PAA02183@antipodes.cdrom.com> In-Reply-To: Your message of "Sat, 08 Aug 1998 16:50:33 EDT." <Pine.SOL.L3.93.980808163645.5265A-100000@bingsun2>
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> > Hi, I have two questions about MFS: > > (1) Does option MFS_ROOT mean that the memory file system will be the root > of the entire file system hierarchy (all other disk-based file systems, if > any, hang off the memory-based file system)? It means that the kernel-internal MFS will be mounted as /. If your startup code in that filesystem mounts others, then they will be hung off the MFS, yes. > (2) How can the MFS image be made separately from the other part of the > kernel? This is required by MFS_AUTOLOAD. Use 'dd' to create a file of the appropriate size, then 'vnconfig' to attach it to a 'vn' device, then newfs it and install stuff as desired. Have a look at the way that the src/release makefile does it as it builds the MFS for the install kernel. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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