From: Christoph Hellwig <hch@infradead.org>
To: Douglas Gilbert <dougg@torque.net>
Cc: "Martin W. Schlining III" <mschlining@datadirectnet.com>,
Linux-SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: 64-bit SCSI LUN addressing on Linux
Date: Thu, 30 Jun 2005 18:06:34 +0100 [thread overview]
Message-ID: <20050630170634.GA31249@infradead.org> (raw)
In-Reply-To: <42C4245C.8010008@torque.net>
On Thu, Jun 30, 2005 at 12:57:00PM -0400, Douglas Gilbert wrote:
> Martin W. Schlining III wrote:
> >Does Linux support 64-bit SCSI LUN addressing?
>
> No. Linux supports 32 bit LUNs.
>
> >Suppose I have a system
> >that can create SCSI LUNs that are greater than 2TB using a block size
> >of 512 bytes and can accept 16 byte CDBs, can I use this LUN with a 2.6
> >series Linux kernel?
>
> There is no relationship between 64 bit LUNS (which,
> for example, support a hierarchy of up to 4, 16 bit LUNs)
> and the ability of a logical unit (LU) (e.g. a disk) to
> support 64 bit logical block addressing (LBA).
>
> Christoph's reply more accurately addresses the question
> I think you were trying to ask...
Yeah, people tend to say LUNs when they mean storage devices a lot,
so I've started to look over the slight misuses if things make sense
otherwise.
next prev parent reply other threads:[~2005-06-30 17:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-30 16:01 64-bit SCSI LUN addressing on Linux Martin W. Schlining III
2005-06-30 16:11 ` Christoph Hellwig
2005-06-30 16:57 ` Douglas Gilbert
2005-06-30 17:06 ` Christoph Hellwig [this message]
2005-06-30 19:59 ` Bryan Henderson
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