HOWTO: FC2 USB Multicard Reader

Jeff Vian jvian10 at charter.net
Sun Jun 13 13:33:50 UTC 2004



Dave Ulrick wrote:

>On Sat, 12 Jun 2004, William Hooper wrote:
>
>  
>
>>Robert Dale said:
>>    
>>
>>>This is to help anyone trying to get their USB multicard reader working in
>>>Fedora Core 2.
>>>
>>>First, you must recompile the scsi module with "Probe all LUNs".
>>>      
>>>
>>No you don't.  It is a module option.
>>
>>https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=110653
>>
>>Also, don't forget to report your info upstream so that device can be whitelisted.
>>
>>http://www.redhat.com/archives/fedora-test-list/2004-May/msg00387.html
>>    
>>
>
>For some reason, I've never been able to get the 'options scsi_mod
>max_scsi_luns=8' option to work.  I get this message when I add it to
>/etc/modprobe.conf:
>
>scsi_mod: Unknown parameter `max_scsi_luns'
>
>However, I've gotten good results from a three-line script that
>coaxes Linux to recognize the additional LUNs on my Y-E media reader:
>
>echo >/proc/scsi/scsi "scsi add-single-device 0 0 0 1"
>echo >/proc/scsi/scsi "scsi add-single-device 0 0 0 2"
>echo >/proc/scsi/scsi "scsi add-single-device 0 0 0 3"
>
>Here's my /proc/scsi/scsi after running the script:
>
>Host: scsi0 Channel: 00 Id: 00 Lun: 00
>  Vendor: Y-E DATA Model: CF Card Reader   Rev: 1.03
>  Type:   Direct-Access                    ANSI SCSI revision: 02
>Host: scsi0 Channel: 00 Id: 00 Lun: 01
>  Vendor: Y-E DATA Model: SM Card Reader   Rev: 1.03
>  Type:   Direct-Access                    ANSI SCSI revision: 02
>Host: scsi0 Channel: 00 Id: 00 Lun: 02
>  Vendor: Y-E DATA Model: MS Card Reader   Rev: 1.03
>  Type:   Direct-Access                    ANSI SCSI revision: 02
>Host: scsi0 Channel: 00 Id: 00 Lun: 03
>  Vendor: Y-E DATA Model: SD Card Reader   Rev: 1.03
>  Type:   Direct-Access                    ANSI SCSI revision: 02
>
>The '0 0 0' in each of the lines of my script stands for scsi0, channel 0,
>ID 0.  The last of the four numbers is the LUN number.  I run my script
>from /etc/rc.d/rc.local.
>
>Dave
>
someone else has said that with the 2.6 kernel you should use "max_luns" 
in /etc/modprobe.conf.

>  
>





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