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Re: [OT] kiobuf on ide ?

To: Thomas Graichen <graichen@xxxxxxxxxxxxx>, thomas.graichen@xxxxxxxxxxxxx
Subject: Re: [OT] kiobuf on ide ?
From: Steve Lord <lord@xxxxxxx>
Date: Thu, 17 Aug 2000 08:57:00 -0500
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: Message from Thomas Graichen <news-innominate.list.sgi.xfs@xxxxxxxxxxxxx> of "17 Aug 2000 12:43:42 GMT." <news2mail-8ngmlu$ikg$7@xxxxxxxxxxxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
> what is the state of kiobuf on ide drives (and all the other stuff
> like md etc.) - doeas anyone here has some idea about the current
> and future state ?
> 
> a lot of thanks in advance
> 
> t
>

These are both works in Progress, Jens Axboe at Suse has been working
on the ide kiobuf code, not quite sure where it is at the moment, md
is in the hands of Martin Peterson at LinuxCare. There are issues in both
code bases - for example md has always worked just by redirecting fixed
size requests to the correct devices - introducing kiobufs into its
I/O path means it has to cope with variable sized requests and do things
like request splitting.

If Jens and Martin are reading this perhaps they could comment some more
on where things are at.

Steve

 
> -- 
> thomas.graichen@xxxxxxxxxxxxx
> technical director                                       innominate AG
> clustering & security                                networking people
> tel: +49.30.308806-13  fax: -77                   http://innominate.de



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