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- Path: sparky!uunet!usc!zaphod.mps.ohio-state.edu!rpi!psinntp!psinntp!airsun!digtype.airage.com!Jeff
- From: Jeff@digtype.airage.com (Jeff Wasilko)
- Newsgroups: comp.protocols.appletalk
- Subject: Re: CAP6.1 and Publish and Subscribe
- Date: Tue, 1 Sep 92 20:01:59 EST
- Organization: Univ of Fnord; Roslyn's Cafe Div.
- Message-ID: <0105002B.civ5n9@digtype.airage.com>
- Reply-To: jeff@digtype.airage.com
- Distribution: world
- X-Mailer: uAccess - Macintosh Release: 1.6v1
- Lines: 33
-
-
- In article <BtpwEx.GE8@mtholyoke.edu> (comp.protocols.appletalk), jbotz@mtholyoke.edu (Jurgen Botz) writes:
- > The failure of CAP to conform to the AFP requirement that dirIDs be
- > constant and unique throughout the lifetime of the volume (filesystem)
- > appears to be breaking several recent features of the Mac OS: definitely
- > aliases, probably publish & subscribe. I would say it is time to rethink
- > this functionality... anybody working on that already? I've browsed the
- > code, and it sure isn't going to be trivial, no matter what scheme is
- > used. I'm tempted actually to go ahead a simply use inodes, thereby
- > complying with the "constant" requirement, but probably breaking the
-
- uShare uses inodes as the dirIDs. It keeps a directory
- called .dirids where it keeps a file for each file or folder. The files
- in .dirids contain the unix path to each file or folder, and are named
- using the inode it references.
-
- This casued a big problem on folder operations (renaming/moving/deleting).
- On one of our volumes with 1 gig or so of files (say 4,000 or so)
- any folder operation takes 60-90 seconds. On a volume with fewer files,
- the speed is quite good.
-
- IPT just sent me a patch to improve performnace, but I haven't installed
- it yet. I'm told they will peventually put some kind of structure in
- the .dirids folder to improve search speed....
-
- Jeff
-
- --
- Jeff's Oasis at Home. Jeff can also be reached at work at:
- jwasilko@airage.com
- "A system admin's life is a sorry one. The only advantage he has over
- Emergency Room doctors is that malpractice suits are rare. On the other
- hand, ER doctors never have to deal with patients installing new versions
- of their own innards!" -Michael O'Brien
-