[8274] in linux-scsi channel archive
RE: Driver reading from a file
daemon@ATHENA.MIT.EDU (Marc SCHAEFER)
Tue Feb 29 19:25:45 2000
Date: Tue, 29 Feb 2000 21:55:28 +0100 (MET)
From: Marc SCHAEFER <schaefer@alphanet.ch>
To: "WANG,YIDING (HP-SanJose,ex1)" <yiding_wang@agilent.com>
Cc: "'linux_scsi'" <linux-scsi@vger.rutgers.edu>
In-Reply-To: <D53173D574D6D211945500A0C9E95BEBEE16FE@xsj02.sj.hp.com>
Message-ID: <Pine.LNX.4.10.10002292150460.4240-100000@vulcan.alphanet.ch>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
[ removed linux-kernel for the time being ]
On Tue, 29 Feb 2000, WANG,YIDING (HP-SanJose,ex1) wrote:
> set up persistent binding environment for Linux. This happens to Fibre
> Channel world when new device plugged into the loop or Fibric, the existing
> device address could change which leads to target id changes. The persisten
So you not only want to be configured, but also you need to write out this
information somewhere ? The closest I can see is a *user process* doing
one of:
a. cat /proc/thing > /etc/thing.information
b. ioctl() on your device and output to a file.
just before rmmod or shutdown. At insmod you pass the
/etc/thing.information or you cat it to /proc or ioctl().
Having a kernel driver modifying files is possible, but certainly not very
good from a software engineering/decoupling point of view.
Or maybe I misunderstood you. I have been doing very small FC things
lately (point-to-point), and in that case the target ID is static. But I
am not a FC specialist, far from that.
Alternatively, why not start a complete loop detection (request a LIP)
when you start up ?
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