From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Ralf Oehler <R.Oehler@GDAmbH.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Scsi <linux-scsi@vger.kernel.org>
Subject: Re: Support for sectorsizes > 4KB ?
Date: Wed, 6 Mar 2002 22:53:01 +0000 (GMT) [thread overview]
Message-ID: <E16ikHN-0008T9-00@the-village.bc.nu> (raw)
In-Reply-To: <XFMail.20020306084829.R.Oehler@GDAmbH.com> from "Ralf Oehler" at Mar 06, 2002 08:48:29 AM
> In the not-so-far future there will occure MO media on the market with
> 40 to 120 Gigabytes of capacity and sectorsizes of 8 KB and maybe more.
> It's called "UDO" technology.
>
> Is there any way to support block devices with sectors larger than 4KB =
> ?
The scsi layer itself doesn't mind, but the page caches do. Once your
block size exceeds the page size you hit a wall of memory fragmentation
issues. Given that M/O media is relatively slow I'd be inclined to say
write an sd like driver (smo or similar) which does reblocking and also
knows a bit more about other M/O drive properties.
Alan
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prev parent reply other threads:[~2002-03-06 22:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-06 7:48 Ralf Oehler
2002-03-06 22:53 ` Alan Cox [this message]
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