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SubjectRE: adding scsi devices

If I may be so bold --

What scsi controller are you using with your jaz drive? I recently
purchased an Adaptec 2940AU and am having trouble getting it recognized
by my linux -- kernel 1.2.13.

My next step is to try building the 2.0.27 kernel and hope for the best. If
you have any advice/direction/hope/despair to share, I would greatly
appreciate it.

Thanks.

David

> From owner-linux-scsi-outgoing@vger.rutgers.edu Tue Dec 17 13:14:27 1996
> X-Mailer: XFMail 0.4 [p0] on Linux
> Content-Type> : > text/plain> ; > charset=us-ascii>
> Content-Transfer-Encoding: 8bit
> Mime-Version: 1.0
> Date: Tue, 17 Dec 1996 12:53:32 -0500 (EST)
> From: "Mark F. burgo" <mfburgo@lrkimball.com>
> To: "Marty Leisner" <leisner@sdsp.mc.xerox.com>
> Subject: RE: adding scsi devices
> Cc: aeb@cwi.nl, linux-kernel@vger.rutgers.edu, linux-scsi@vger.rutgers.edu
> Sender: owner-linux-scsi@vger.rutgers.edu
> Content-Length: 2458
>
>
> if you have only one scsi card your host would be 0. If it has only one scsi
> channel then the channel would be 0, the id is the scsi id on the drive could
> be 0 to 7 depending on the configuration and the lun should be 0.
>
> the command is for adding a scsi device that you may have forgotten to turn on
> before system powerup. syntax is:
>
> echo "scsi add-single-device <host> <channel> <id> <lun>" > /proc/scsi/scsi
>
> I have used this to add my jaz drive after the systems is running.
>
> you could also shutdown your machine, add the device, and restart. This is the
> best solution. If you have problems restarting check the scsi id's of all devic
> es
> currently connected.
>
> mark
>
> On 17-Dec-96 "Marty Leisner" wrote:
> --->--->
> --->
> --->
> --->Well, I never got this working satisfactorily, but the kernel code
> --->in 2.0.27 has:
> --->
> --->(in scsi.c)
> --->f(!strncmp("add-single-device", buffer + 5, 17)) {
> ---> p = buffer + 23;
> --->
> ---> host = simple_strtoul(p, &p, 0);
> ---> channel = simple_strtoul(p+1, &p, 0);
> ---> id = simple_strtoul(p+1, &p, 0);
> ---> lun = simple_strtoul(p+1, &p, 0);
> --->
> ---> printk("scsi singledevice %d %d %d %d\n", host, channel,
> ---> id, lun);
> --->
> --->The man page (PROC(5) Linux Programmer's Manual PROC
> (5)
> --->22 July 1996 1
> --->has
> ---> An echo `scsi singledevice 1 0 5 0' >
> ---> /proc/scsi/scsi will cause host scsi1 to
> ---> scan on SCSI channel 0 for a device on ID 5
> ---> LUN 0. If there is already a device known on
> ---> this address or the address is invalid an
> ---> error will be returned.
> --->`
> --->
> --->I find this strategy awkward (to say the least) and I'm not sure what number
> s
> --->to fill in (unless I write it down). I understand LUNs, is channel 0 the
> --->first scsi board (if we have only one board?).
> --->
> --->On a syquest disk, do they just have ID 0 (one device??)
> --->
> --->It would make sense to allow a rescan via user control if no devices are ope
> n.
> --->It would be good to allow a rescan with active devices (but this will be mor
> e
> --->complicated).
> --->
> --->marty leisner@sdsp.mc.xerox.com
> --->Don't confuse education with schooling.
> ---> Milton Friedman to Yogi Berra
>
> ----------------------------------
> E-Mail: Mark F. burgo <mfburgo@lrkimball.com>
> Date: 12/17/96
> Time: 12:53:32
>
> This message was sent by XF-Mail
> ----------------------------------
>

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