Date: Mon, 18 Oct 2004 13:00:45 +0200 From: "Daniel Gustafsson" <daniel.gustafsson@space.se> To: "'Daniel Ellard'" <ellard@eecs.harvard.edu> Cc: freebsd-fs@freebsd.org Subject: RE: Extracting FFS from FreeBSD Message-ID: <200410181055.i9IAtK70006738@space.se> In-Reply-To: <20041018064004.U32814@bowser.eecs.harvard.edu>
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=20 It=B4s true that it may be overkill to extract FFS for my needs. The functionallity that I am after is: 1. Read/Write etc. 2. 1 GB Partitions. 3. Few reads and writes to disk. 4. RAM footprint between 200-800K 5. Blockbased (blocksize 4-8K). 6. Configurable. 7. Free. 8. Multi-user (I will integrate the FS with a RTOS) 9. Provides a RAM disk than can be modified to fit "any" secondary = storage used. NOTE: The above configuration is for the optimal FS. Does someone have any tips on file systems that fit this puropse. I have made some research but hasn't yet found anything adeuquate. //Daniel >-----Original Message----- >From: Daniel Ellard [mailto:ellard@eecs.harvard.edu]=20 >Sent: Monday, October 18, 2004 12:48 PM >To: Daniel Gustafsson >Cc: freebsd-fs@freebsd.org >Subject: Re: Extracting FFS from FreeBSD > >On Mon, 18 Oct 2004, Daniel Gustafsson wrote: > >> I am working in a project which is in need of a stand-alone=20 >file system and >> I am interested in extracting FFS from BSD and modyfi it to=20 >a stand-alone >> module. I have some questions before I begin: > >I also have some questions before you begin :-) They all follow from >your last question. > >Do you really need FFS or will something simpler do the job? What >functionality do you need to support? (Has anyone done this before?) > >My suspicion is that if all you need is a simple user-level file >system, then you can find something already written that will do most >or all of what you want -- unless you need something special. If you >can't find anything, it's probably faster to write a simplistic file >system on your own than to dis-tangle FFS from the rest of the kernel. > >-Dan > >
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