From: James Bottomley <James.Bottomley@steeleye.com>
To: Bryan Henderson <hbryan@us.ibm.com>
Cc: EXT / DEVOTEAM VAROQUI Christophe <ext.devoteam.varoqui@sncf.fr>,
"'linux-scsi@vger.kernel.org'" <linux-scsi@vger.kernel.org>,
Martin Peschke3 <MPESCHKE@de.ibm.com>,
"Robert J. Adams (jason)" <radams@siscom.net>
Subject: Re: Mount by WWN (FC, using qlogic 2200)
Date: 04 Feb 2004 18:23:14 -0500 [thread overview]
Message-ID: <1075936996.2029.131.camel@mulgrave> (raw)
In-Reply-To: <OFB4AE9EAB.C15E2C56-ON87256E30.007E8F0D-88256E30.007F5E0C@us.ibm.com>
On Wed, 2004-02-04 at 18:12, Bryan Henderson wrote:
> But it doesn't identify the "device" as Linux defines a device. Setting
> aside multiple paths for the moment, a Linux sd device corresponds to an
> FCP logical unit, and the WWN identifies an FCP target (aka physical unit).
> I.e. where a physical unit has multiple logical units, multiple linux sd
> devices can have the same WWN.
Actually, the SPC-3 (rev 16) section 7.6.4.1 does say the Device
Identification VPD Page ... [shall apply] to the logical unit.
Of course, not all devices obey this, as you say, but still.
James
next parent reply other threads:[~2004-02-04 23:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <OFB4AE9EAB.C15E2C56-ON87256E30.007E8F0D-88256E30.007F5E0C@us.ibm.com>
2004-02-04 23:23 ` James Bottomley [this message]
2004-02-05 0:33 ` Mount by WWN (FC, using qlogic 2200) Bryan Henderson
2004-02-05 13:56 ` Tom Coughlan
2004-02-05 15:10 ` James Bottomley
2004-02-05 16:38 ` Patrick Mansfield
2004-02-04 19:58 Martin Peschke3
2004-02-04 20:06 ` James Bottomley
2004-02-04 20:15 ` Patrick Mansfield
2004-02-04 20:15 ` Patrick Mansfield
2004-02-05 9:52 ` EXT
2004-02-05 9:52 ` EXT / DEVOTEAM VAROQUI Christophe
-- strict thread matches above, loose matches on Subject: below --
2004-02-04 10:19 EXT / DEVOTEAM VAROQUI Christophe
2004-02-04 18:39 ` Robert J. Adams (jason)
2004-02-04 1:27 NH Support
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