Re: firewire can only see one drive instead of two in Linux

From: Stefan Richter <stefanr_at_s5r6.in-berlin.de>
Date: Thu 21 Oct 2004 - 20:52:36 CEST
Message-ID: <a7ac2b5d7e5c6b30608e7d977a444d20@localhost>

Keith Baker wrote:
> I have dual firewire enclosure with two drives. In windows it sees both with
> no problem. With Suse 9.1 Pro it only sees the one.

This is a known bug in the drivers for kernel 2.6. Ben Collins is
currently busy otherwise, that's why there is no one working on it
right now. Kernel 2.4 should work.

Have a look into the linux1394-devel archive if you are interested
in making it work. The problem: The SBP-2 spec allows two ways to
represent multi-LUN devices in the config ROM. One way is supported
because nodemgr in the ieee1394 base driver scans this and calls
sbp2 separately for each logical unit. The alternative way is
only scanned by sbp2 itself (several unit entries in the same unit
directory of the ROM), and sbp2 catches all occurrences of the
logical unit info --- but the subsequent functions in sbp2 (create
device data structures, log in...) are only entered once.

-- 
Stefan Richter
-=====-=-=-- =-=- =-=-=
http://arcgraph.de/sr/
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Received on Thu Oct 21 21:25:07 2004

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