Re: Direck IO on SCSI Disk

Alan Cox (alan@lxorguk.ukuu.org.uk)
26 Mar 2003 17:00:41 +0000

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On Wed, 2003-03-26 at 14:37, Akhilesh wrote:
> more SCSI disks attached to it. In order to build our own filesystem I
> need to do direct writing/reading in the SCSI disk bypassing all the
> kernel level buffering.
>
> Could you please suggest some information as how to go about it.

A Linux file system doesn't have to use the page cache Linux provides, so
in theory there is no reason it cannot be done. Two obvious examples to
look at are OCFS (oracle's GPL'd cluster fs) and OpenGFS (opengfs.sourceforge.net)

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