From: Luben Tuikov <luben_tuikov@adaptec.com>
To: dougg@torque.net
Cc: Patrick Mansfield <patmans@us.ibm.com>, linux-scsi@vger.kernel.org
Subject: Re: Report luns
Date: Wed, 10 Nov 2004 09:13:34 -0500 [thread overview]
Message-ID: <4192220E.80805@adaptec.com> (raw)
In-Reply-To: <41919D7B.5040703@torque.net>
Douglas Gilbert wrote:
>
> So now if one sends a REPORT LUNS to lun 0 that U320 disk is
> expected to know about its sibling disks!? That is why I used
> the term "hack" with respect to lun 0. What really happens
> is the device server in the bridge intercepts the REPORT LUNS
> command and produces a response reflecting its knowledge of
> those 5 U320 disks present. Why play this game? Why not talk
> directly to the device server (addressed via a well known lu).
> This way an INQUIRY to a W-LUN yields information about
> the bridge, while an INQUIRY to lun 0 yields information about
> that disk.
Very good point!
So we can reverse the logic into sending REPORT LUNS to
the REPORT LUNS W-LUN *first* and if this fails (most probably
in early years), then issue REPORT LUNS to LUN 0.
Luben
next prev parent reply other threads:[~2004-11-10 14:13 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-27 23:33 Apple Xserve RAID and qlogic ISP2312 (qla2300) Catalin Muresan
2004-10-28 14:37 ` Patrick Mansfield
2004-10-28 15:35 ` Catalin Muresan
2004-10-28 16:42 ` Patrick Mansfield
2004-10-28 16:51 ` Patrick Mansfield
2004-10-28 17:21 ` Andrew Vasquez
2004-10-29 8:58 ` Catalin Muresan
2004-10-29 18:06 ` Patrick Mansfield
2004-10-30 15:44 ` Catalin Muresan
2004-11-01 10:56 ` Catalin Muresan
2004-11-01 19:48 ` Patrick Mansfield
2004-11-09 2:49 ` Report luns [was: Apple Xserve RAID and qlogic ISP2312 (qla2300)] Douglas Gilbert
2004-11-09 15:06 ` Luben Tuikov
2004-11-09 21:10 ` Patrick Mansfield
2004-11-09 22:07 ` Luben Tuikov
2004-11-10 4:47 ` Report luns Douglas Gilbert
2004-11-10 14:13 ` Luben Tuikov [this message]
2004-11-10 5:19 ` Report luns [was: Apple Xserve RAID and qlogic ISP2312 (qla2300)] Douglas Gilbert
2004-11-10 14:47 ` Luben Tuikov
2004-10-29 9:01 ` Apple Xserve RAID and qlogic ISP2312 (qla2300) Catalin Muresan
-- strict thread matches above, loose matches on Subject: below --
2003-06-13 14:04 REPORT LUNS Josef Möllers
2003-06-13 18:22 ` Patrick Mansfield
2003-06-16 6:55 ` Josef Möllers
2003-06-23 16:49 ` Patrick Mansfield
2003-06-24 6:51 ` Josef Möllers
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