From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@cse.psu.edu
Subject: Re: [9fans] making better use of ext2fs?
From: forsyth@caldo.demon.co.uk
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Message-Id: <20010514181358.130FF199F2@mail.cse.psu.edu>
Date: Mon, 14 May 2001 19:10:31 +0100
Topicbox-Message-UUID: 9fb50b3c-eac9-11e9-9e20-41e7f4b1d025

>>Am I confused or is the problem with data corruption on unclean
>>shutdown with kfs the same as with ext2, namely that there aren't
>>synchronous metadata updates?

disk/kfs updates most metadata synchronously (look
for localfs and Bimm), which
might be why some people complain about its performance.
the file server kernel is (just) slightly more relaxed about it.

that reduces the scrambling, but doesn't ensure that
the data blocks from the last file you wrote have been
written out, hence the need to sync.