Date: Tue, 6 Jun 1995 15:56:15 -0500 (CDT) From: Joe Greco <jgreco@brasil.moneng.mei.com> To: rgrimes@gndrsh.aac.dev.com (Rodney W. Grimes) Cc: freebsd-hackers@FreeBSD.org Subject: Re: large filesystems/multiple disks [RAID] Message-ID: <199506062056.PAA09582@brasil.moneng.mei.com> In-Reply-To: <199504221758.KAA02014@gndrsh.aac.dev.com> from "Rodney W. Grimes" at Apr 22, 95 10:58:16 am
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Hi Rod, > > > I have read the code in stripe.tar, it should be a day or twos work > > > to get it up and running under FreeBSD. > > > > Did you ever make any progress on this? If not, I will (try to) look at > > it, but I'd prefer that somebody that knows what the heck they're doing down > > within the device driver code putz with it.. :-) > > Yes, I played with that code (infact I have a kernel with /dev/ilv in > it). I never made it work completly. Then I remeber the sys/dev/cd.c > driver that came with 4.4 Lite and went and looked at it. I also have > that working (renamed to concat.c to elimanate the conflict) partially, > enough to say that I took 2 4MB/sec drives and interleaved them and > got a 5.2MB/sec transfer rate for reads (I can't write due to bugs) > *with out* spindle sync. > [...] > > Having recently seen Solaris' Online: DiskSuite, which suffers from fairly > > significant performance degradations, I'm curious to see what a real > > operating system can do. ;-) > > It will be at least another week, but you'll now I have made serious > progress when you see a cvs commit message for the import of > sys/dev/concat. Any progress on this? I have not seen anything recently, or any signs of ilv or concat that I can determine in 2.0.5A...? Or am I just blind? :-) ... Joe ------------------------------------------------------------------------------- Joe Greco - Systems Software Engineer, UNIX/Network Hacker, Etc. 414/362-3617 Marquette Electronics, Inc. - R&D - Milwaukee, WI jgreco@mei.com
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