Probe ALL LUNs

[devtrash]

I am trying to get my SanDisk 2in1 card reader to work. From what I understand the Smartmedia slot ( the one I need) is on LUN 1. Is there a way to enable that additional LUN? I have asked on the Knoppiz mailing list if "Probe Additional LUNs" was selected in the latest versions kernel but got no reply. Any help would be appreciated.

[VeeDubb]

For sure you can do it by selecting "probe multiple LUN's on each device" when configureing a custom kernel. I have also heard of people using various boot params, but I've not had any success that way.

[rickenbacherus]

You could try something like this for example:

echo "scsi-add-single-device 1 0 0 1" >
/proc/scsi/scsi

That might get your card reader into the /proc filesystem.

BTW-
Have a look at /usr/src/linux/.config and you'll see this:

CONFIG_SCSI_MULTI_LUN is not set

VeeDubb is right- you'd need to recompile the kernel. I don't know why it's not set.

[devtrash]

You could try something like this for example:

echo "scsi-add-single-device 1 0 0 1" >
/proc/scsi/scsi

That might get your card reader into the /proc filesystem.

BTW-
Have a look at /usr/src/linux/.config and you'll see this:

CONFIG_SCSI_MULTI_LUN is not set

VeeDubb is right- you'd need to recompile the kernel. I don't know why it's not set.

According to Klaus, on the mailing list, it's not set because then there would be 7 erroneous SCSI drives on the desktop.

[probono]

Did anyone get this to work? I have a 6in1 USB card reader but only the slot with LUN 0 is recognized.

[Breetai]

I have not tried it with Knoppix, but it has worked with both RedHat 9 and Mandrake 9.1

in /etc/modules.conf add the line

options scsi_mod max_scsi_luns=12

The only way I know of doing this with Knoppix is with a remaster.

[Breetai]

I forgot that /etc/modules.conf is not to be edited. It is built by the stuff in /etc/modutils

I would add it to the end of /etc/modutils/aliases

# support for SansDisk 5-in-1 reader
options scsi_mod max_scsi_luns=12

[Stephen]

I forgot that /etc/modules.conf is not to be edited. It is built by the stuff in /etc/modutils

I would add it to the end of /etc/modutils/aliases

# support for SansDisk 5-in-1 reader
options scsi_mod max_scsi_luns=12

And then run update-modules as root for the changes to take effect on the next reload of the module.

[probono]

Thanks for the quick reply. Still I can only use one out of four slots of my USB card reader. How can I check whether all LUNs are activated?

cat /proc/scsi/scsi

Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: SONY     Model: CD-RW  CRX140E   Rev: 1.0n
  Type:   CD-ROM                           ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 00
  Vendor: IC       Model: USB Storage-CFC  Rev: 301b
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 01
  Vendor: IC       Model: USB Storage-SMC  Rev: 301b
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 02
  Vendor: IC       Model: USB Storage-MMC  Rev: 301b
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 03
  Vendor: IC       Model: USB Storage-MSC  Rev: 301b
  Type:   Direct-Access                    ANSI SCSI revision: 0

So far, it looks just as before.
But:
scsi_info /dev/sdc

SCSI_ID="0,0,2"
MODEL="IC USB Storage-MMC"
FW_REV="301b"

That last thing wasn't there before your hint. But still I cannot mount the MMC card:

mount /dev/sdc1 /mnt/test
mount: /dev/sdc1 is not a valid block device

[Breetai]

I would try

mount /dev/sdc3 /mnt/test

The reason being, is I suspect the following is true:

/dev/sdc1 CFC
/dev/sdc2 SMC
/dev/sdc3 MMC
/dev/sdc4 MSC