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From: Terry Lambert <terry@lambert.org>
Newsgroups: comp.unix.bsd.freebsd.misc,comp.os.linux.development.system
Subject: Re: async or sync metadata [was: FreeBSD v. Linux]
Date: 13 Feb 1996 01:33:56 GMT
Organization: Utah Valley State College, Orem, Utah
Lines: 25
Message-ID: <4fopq4$ahl@park.uvsc.edu>
References: <4er9hp$5ng@orb.direct.ca> <4f9skh$2og@dyson.iquest.net> <DMI5Mt.768@pe1chl.ampr.org> <4fi6gq$3tr@dyson.iquest.net> <4fjodc$o8j@venger.snds.com>
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Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:13672 comp.os.linux.development.system:17213
grif@hill.ucr.edu (Michael Griffith) wrote:
] Very hard indeed. Here it is one more time:
]
] sync metadata with async data is not just slower,
] it is LESS SAFE. This behavour should not be the default
] on any reasonable system. If you want real safety,
] then both data and meta need to be synchronous (i.e. no
] buffer cache for writes). This real safety comes with
] an huge performance hit (as in MSDOS).
You don't know what you are talking about. I have referenced
both papers and mathematical models for file system recovery
to refute this specious claim. The only thing I have seen from
the opposition is bind assertion. Blind assertion is not proof.
Can you please reference Usenix, Bell Technical Journal, or other
academic publications/sources for your claims?
Thank you,
Terry Lambert
terry@cs.weber.edu
---
Any opinions in this posting are my own and not those of my present
or previous employers.