Date: Mon, 16 Aug 1999 05:29:23 -0700 From: Stephen Byan <Stephen.Byan@quantum.com> To: "'Terry Lambert'" <tlambert@primenet.com>, zzhang@cs.binghamton.edu Cc: phk@critter.freebsd.dk, roberto@keltia.freenix.fr, freebsd-fs@FreeBSD.ORG Subject: RE: Help with understand file system performance Message-ID: <8133266FE373D11190CD00805FA768BF02EE9D26@SHRCMSG1>
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Terry Lambert wrote: >I am becoming convinced that an intermediate abstraction is really >what is called for, to turn the bottom end into what is, in effect, >nothing more than a flat, numeric namespace on top of a variable >granularity block store. A nice topic for much research... 8-). There's an effort to create such a beast as part of CMU's Network Attached Secure Disk research <http://www.pdl.cs.cmu.edu/NASD/>, <http://www.pdl.cs.cmu.edu/extreme/>, and develop and implement it as a disk drive interface, as part of NSIC's Network Attached Storage Device working group <http://www.nsic.org/nasd/index.html>, then standardize it through ANSI T10 as a SCSI-4 command-set. If the file system development community has something to say to the drive vendors, now is the time to do it. Personally, I'd be vocal about atomicity requirements. FWIW, the next NSIC NASD public meeting is tomorrow, Aug 17, at the Clarion Hotel in Millbrae, CA (i.e. at the San Francisco airport). Regards, -Steve Steve Byan <stephen.byan@quantum.com> Design Engineer Quantum Corporation <http://www.quantum.com>; MS 1-3/E23 333 South Street Shrewsbury, MA 01545 voice: (508) 770-3414 fax: (508) 770-2604 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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