From: Romain Francoise <romain@orebokech.com>
Cc: emacs-devel@gnu.org
Subject: Re: Making fsync() optional
Date: Thu, 15 Sep 2005 10:45:26 +0200 [thread overview]
Message-ID: <87wtli4t3t.fsf@pacem.orebokech.com> (raw)
In-Reply-To: <E1EFXuX-0004t1-0B@fencepost.gnu.org> (Richard M. Stallman's message of "Wed, 14 Sep 2005 10:06:53 -0400")
"Richard M. Stallman" <rms@gnu.org> writes:
> Will the drive finish writing the blocks even if the computer crashes?
If it's a software crash, probably. The write caching feature is very
manufacturer dependent so it's hard to tell, there isn't much
documentation about it.
> It has been many years since I had a desktop machine; are IDE disks
> commonly used on them?
Yes, almost all desktop machines use IDE/SATA disks nowadays.
> It seems really dumb if there is no way for the CPU to tell the disk,
> "Write these blocks now, and tell me when you're done."
There is a way, but when the drive reports that it has written the
blocks it may just have stored them in its write cache.
--
Romain Francoise <romain@orebokech.com> | The world is a fine place,
it's a miracle -- http://orebokech.com/ | and worth fighting for.
| --Ernest Hemingway
next prev parent reply other threads:[~2005-09-15 8:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-12 19:27 Making fsync() optional Romain Francoise
2005-09-13 15:55 ` Richard M. Stallman
2005-09-13 18:19 ` Romain Francoise
2005-09-14 14:06 ` Richard M. Stallman
2005-09-15 8:45 ` Romain Francoise [this message]
2005-09-16 1:01 ` Richard M. Stallman
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