You may have a problem like I did this weekend:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=110653
The Fedora/Red Hat kernels don't have multi-LUN support (basically one device with multiple disks). You can manually add the LUNs in /proc:
echo "scsi-add-single-device 0 0 0 1" > /proc/scsi/scsi echo "scsi-add-single-device 0 0 0 2" > /proc/scsi/scsi echo "scsi-add-single-device 0 0 0 3" > /proc/scsi/scsi
See if that helps.
Forrest
What I wonder about is, how did you find the error and how did you find the statements to correct it?
It took me an hour or two of googling to make some sense out of it. Originally I was trying to mount /dev/sda1, because I thought that it
would only see one slot at a time. I eventually found Question 9 under
Trouble Shooting from the FAQ on http://www.linux-usb.org/. From there
it was just testing and documentation.
<arrgh> I think I have seen this faq and this question but I had no idea what a multi-lun is, so I didn't understand it (now I do ...)
I created a patch for USB hotplug that should look at your scsi devices and send the lines automatically. If you get a chance, try it out (and remove the scsi-add-single-device lines you may have added elsewhere.
I did. It works. However, in stead of unplugging it (I'm lazy) I restarted Linux and, low and behold ... the device got (completely) recognized. Congratulations.
Something strange though... When I first restarted, the kernel started booting, gave a few sda, sdb, sdc detection errors (no disk in device), and restarted againg. As I could not reproduce the error, I suppose I can't tell any more than that.
Anyway, probably it's safe to submit.
To use this patch, su to root and cd to /etc/hotplug. Make a backup copy of hotplug.functions (cp hotplug.functions hotplug.functions.orig), and run patch: patch -p2 < /path/to/hotplug-multilun.patch
Unplug the USB card reader, and plug it back in, and then look at /proc/scsi/scsi to see if you have more than one device for you card reader. I have only tested it a few times, but it works for me. Let me know how it works for you. If it works for you, I'll post it on bugzilla.
Forrest
------------------------------------------------------------------------
--- /etc/hotplug/hotplug.functions.orig 2003-11-24 12:12:27.000000000 -0800 +++ /etc/hotplug/hotplug.functions 2003-11-24 12:23:16.000000000 -0800 @@ -171,6 +171,19 @@ fi if echo "$MODULE" | grep -q "usb-storage" > /dev/null 2>&1 ; then [ -x /usr/sbin/updfstab ] && /usr/sbin/updfstab + + # Grab the scsi variables from /proc/scsi/scsi + SCSI=`grep -B 1 "USB Card Reader" /proc/scsi/scsi | grep Host | awk '{print $2}' | awk -Fscsi '{print $2}'` + CHANNEL=`grep -B 1 "USB Card Reader" /proc/scsi/scsi | grep Host | awk '{print $4}' | bc -l` + ID=`grep -B 1 "USB Card Reader" /proc/scsi/scsi | grep Host | awk '{print $6}' | bc -l` + + mesg Adding multi-LUN support + # Add LUNs 1-15 + i=1 + while [[ $i -lt 16 ]];do + echo "scsi-add-single-device $SCSI $CHANNEL $ID $i" >> /proc/scsi/scsi + i=`echo "$i+1" | bc -l` + done fi done }
Anyway, Forrest: thanks for your help. I am indebted to you.
Guus. -- A.J. Bonnema, Leiden The Netherlands, user #328198 (Linux Counter)
