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Re: kiocluster

To: Seth Mos <knuffie@xxxxxxxxx>
Subject: Re: kiocluster
From: Dirk Steinberg <dws@xxxxxxxxxxxxxxxx>
Date: Sun, 24 Jun 2001 16:24:59 +0200
Cc: linux-xfs <linux-xfs@xxxxxxxxxxx>
References: <Pine.BSI.4.10.10106232220210.18631-100000@xs3.xs4all.nl>
Sender: owner-linux-xfs@xxxxxxxxxxx
Seth Mos wrote:
> On Sat, 23 Jun 2001, Dirk Steinberg wrote:
> > I remember that some time ago there were mount
> > options for XFS named kio and kiocluster.
> >
> > Inspecting my copy of the XFS CVS tree I was unable
> > to locate these options in the source, so apparently
> > they are gone.
> >
> > Does this mean that the corresponding functionality
> > has been removed, or is this now default?
> >
> > Should kiocluster indeed be enabled by default nowadays,
> > does it work with both SCSI and EIDE, as well as with
> > MD and LVM?
> 
> kiocluster is gone and not available untill there is decided what to build
> into the kernel. In this case we are following standard kernels.
> There is probably going to be some form of kiocluster in 2.5 but the
> actual shape has yet to be formed.

What about kio? I see it's implemented for both SCSI and EIDE.
How about MD and LVM? Should I expect a significant performance
penalty for using XFS on top of LVM or MD instead of running
it directly on the physical disk partition?

- Dirk

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