From: Douglas Gilbert <dougg@torque.net>
To: "Martin W. Schlining III" <mschlining@datadirectnet.com>
Cc: Linux-SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: 64-bit SCSI LUN addressing on Linux
Date: Thu, 30 Jun 2005 12:57:00 -0400 [thread overview]
Message-ID: <42C4245C.8010008@torque.net> (raw)
In-Reply-To: <42C41745.1020302@datadirectnet.com>
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...
In your title perhaps you could: s/LUN addressing/LBAs/
LUNs are about device addressing; LBAs are about block
(or sector) addressing on a block device.
Doug Gilbert
next prev parent reply other threads:[~2005-06-30 16:56 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 [this message]
2005-06-30 17:06 ` Christoph Hellwig
2005-06-30 19:59 ` Bryan Henderson
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