Date: Sun, 05 Dec 1999 09:44:32 +1000 From: George Michaelson <ggm@dstc.edu.au> To: Kirk McKusick <mckusick@flamingo.McKusick.COM> Cc: Mike Smith <msmith@FreeBSD.ORG>, match@elen.utah.edu, current@FreeBSD.ORG Subject: Re: Mounting one FS on more than one system Message-ID: <1082.944351072@dstc.edu.au> In-Reply-To: Your message of "Sat, 04 Dec 1999 12:44:43 PST." <199912042044.MAA05073@flamingo.McKusick.COM>
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Allowing for cache writeback delays, is the speed of direct-to-shared-disk fast enough that using NFS as an "abstraction" layer would be faster than any network extant? Would it be as fast? would the effort to make this work exceed the cost of making real networks exist? It would seem that there might be opportunities to do 'cut through' in the coding for known-private files after open (ok, inode allocation/extension has problems) to optimize them to at-worst 'disk+bits' instead of NFS costs. If one party mounts -r the FS (eg news spool) then does this reduce the complexity? eg /usr mounted read-mostly for a bunch of tightly coupled boxes. If some other protocol is used for interlock, does this make mmap shares across clusters faster? -George -- George Michaelson | DSTC Pty Ltd Email: ggm@dstc.edu.au | University of Qld 4072 Phone: +61 7 3365 4310 | Australia Fax: +61 7 3365 4311 | http://www.dstc.edu.au To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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