Re: NFS sucks (was Re: Pentium-90 box for Linux?)

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#112

From: H. Peter Anvin
Date: Thu, 16 Feb 1995 12:00

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Followup to:  <PREP.95Feb16015835@yarrow.wt.uwa.edu.au>
By author:    prep@yarrow.wt.uwa.edu.au (Paul Repacholi)
In newsgroup: aus.computers.linux
> 
> Most systems define deletion to be a deletion request, that happens
> when the last user closes (de-accesses ) the file. Many, but not all,
> systems will not allow opens after a delete operation. A few systems
> treat a delete as a 'de-reference' operation, and only destroy(sic)
> the file when its reference count is 0.
> 
> Any of them is fine...
> 

Actually, the unlink() system call on POSIX systems have very specific
semantics: it removes the directory name (link) of a file.  A
file can only be opened by referencing though a link, so once the
final link is removed, the file cannot be opened again except by a
process which can clone a file descriptor.  After all links are
removed and all file descriptors referring to the file are closed, the
file becomes inaccessible and its storage space is reclaimed by the
file system.

	/hpa

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Message-ID: <hpa.2f433d11.Linux.is.free@asgard.yggdrasil.com>

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References:

<1995Feb6.094005.40@nntp.brisnet.org.au> <3hngrg$s86@inferno.mpx.com.au> <3hqcv9$qho@bunyip.cc.uq.oz.au> <PREP.95Feb16015835@yarrow.wt.uwa.edu.au>

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From: hpa@asgard.yggdrasil.com (H. Peter Anvin)
Newsgroups: comp.os.linux.help,comp.os.linux.misc,aus.computers.linux
Subject: Re: NFS sucks (was Re: Pentium-90 box for Linux?)
Date: 16 Feb 1995 12:00:11 GMT
Organization: Yggdrasil Computing, Inc.
Lines: 24
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References: <1995Feb6.094005.40@nntp.brisnet.org.au> <3hngrg$s86@inferno.mpx.com.au> <3hqcv9$qho@bunyip.cc.uq.oz.au> <PREP.95Feb16015835@yarrow.wt.uwa.edu.au>
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