Date: Sat, 9 May 1998 04:43:02 -0400 (EDT) From: Dennis Tenn <dstenn@fanfic.org> To: Julian Elischer <julian@whistle.com> Cc: FreeBSD Questions <freebsd-questions@FreeBSD.ORG> Subject: Re: Softupdates Message-ID: <Pine.BSF.3.96.980509044205.393G-100000@fanfic.org> In-Reply-To: <Pine.BSF.3.95.980509010537.2025A-100000@current1.whistle.com>
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On Sat, 9 May 1998, Julian Elischer wrote:
| Whe writing to a filesystem, there are many dependencies..
| e.g one must write the dat defore writing the inode that points to it
| one must write the inode before the directory entry, etc.
|
| if they are done wrong then a crash will leave the disk in an inconsistent
| state.
| Until nowm order has been forced by locking and synchronous writes.
| this makes the filesystem slow.
|
| Soft updates does dependency tracking and this ensures that the right
| dependencies are followed in asynchronous writes.
|
| this gives you fast AND safe.
| in fact safer than SYNCHRONOUS in some cases..
Thanks for the update Julian. Now where can I get more info on how to add
this support to my system? I'd like to try it.
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Dennis Tenn * There will always come a time
dstenn@fanfic.org * When your love will be tested
ICQ# 1457509 * Stand tall and rise to the occasion
* For only then will you grow strong.
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