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Re: Direct IO In RH 3.0

From: Frank van Bortel <fvanbortel_at_netscape.net>
Date: Sun, 29 Feb 2004 16:28:05 +0100
Message-ID: <c1t0b4$1bo$1@news2.tilbu1.nb.home.nl>


Mladen Gogala wrote:

> On Sat, 28 Feb 2004 23:37:11 +0000, Stan wrote:
> 
> 

>>Environment : Oracle 9.2.0.4, RH 3.0 ES
>>
>>Does ext3 fs support direct io. I couldn't find anything that is
>>equivalent to forcedirectio as in solaris ufs. I have been using noatime
>>for a while otherwise there weren't much changes done to default ext3 fs
>>mount points. Any advice or caveats appreciated.
>>
>>Thanks,
>>Stan
> 
> 
> Oracle 9.2.0.4? No, ext3 doesn't support direct I/O. JFS does.
> 

Lost in abbreviations here: JFS stands for Journalled File System, iirc. ext3 is a JFS, so you are saying ext3 does not support DIO, as it is JFS, which supports DIO.
Does not make sense to me...

I thought DIO was kernel 2.6 (maybe backported to 2.4x?)

Please explain

-- 

Regards,
Frank van Bortel
Received on Sun Feb 29 2004 - 09:28:05 CST

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