Re: Direct IO In RH 3.0

From: Rick Denoire <100.17706_at_germanynet.de>
Date: Wed, 03 Mar 2004 23:24:40 +0100
Message-ID: <3jmc40185eud2paco6hso0alnpvbd6jbjd@4ax.com>

Mladen Gogala <mgogala_at_adelphia.net> wrote:

>file systems (XFS reports an error). Ext2 does support direct I/O,
>but ext3 has had significant problems with it. The latest versions
>of ReiserFS no longer report an error woth it, while JFS works.
>Veritas charges significant amount of money for "Quick I/O" option,
>which is, essentially, ability to do direct I/O. JFS for linux
>is described at: http://www-124.ibm.com/jfs

Could you provide some references to the support of direct I/O in ext2 and ext3? If ext2 really supports direct I/O flawlessly, then it is worth trying - what would be the trade offs here? (Since ext3 is supposed to be more advanced - but the journaling option is not needed for DB operations, the number + name + properties of the DB files does not change often).

Bye
Rick Denoire Received on Wed Mar 03 2004 - 16:24:40 CST