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kazim
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 Posted: Thu May 20, 2004 9:01 pm Post subject: Multi Card Readers - HOW-TO quici |
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Under RH/BLAG Single storage devices work fine, and you can mount them after insert with | Code: | | mount /dev/sda1 /mnt/usbflash |
Someone at a BLAG session was asking about USB storage multiple card readers (you know the ones with slots for Compact Flash, Memory Stik etc..) I got my generic 4-card reader working this way:
Insert the cardreader with at least one card therein.
will show which bus it got onto (this may vary depending on whether it lwas inserted at boottime)
Adapt this script to the bus as appropriate:
| Code: |
#!/bin/sh
echo "scsi add-single-device 0 0 0 0" > /proc/scsi/scsi
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
cat /proc/scsi/scsi
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At this point you should have access to the card-slots on /dev/sda /dev/sdb /dev/sdc /dev/sdc -
You can mount your storage device like so
| Code: | | mount /dev/sdb1 /mnt/mcr_compactflash |
You can install sg3_utils from http://www.torque.net/sg/index.html to help show where scsi devices are mapped. You can also install them with | Code: | | apt-get install sg3_utils |
More info from these pages:
http://www.linux-sxs.org/hardware/flashreaders.htm
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blaggard
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| Posted: Tue Nov 09, 2004 4:04 am Post subject: Re:Multi Card Readers - HOW-TO quici |
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Kazim,
OK, I need help.
I got one of those cardreaders to read my Secure Digital card.
DMESG output:
| Code: |
usb 1-2: new full speed USB device using address 16
scsi14 : SCSI emulation for USB Mass Storage devices
Vendor: GENERIC Model: USB Storage-SMC Rev: I03A
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sdb at scsi14, channel 0, id 0, lun 0
Attached scsi generic sg2 at scsi14, channel 0, id 0, lun 0, type 0
USB Mass Storage device found at 16
updfstab: Using deprecated /dev/sg mechanism instead of SG_IO on the actual devi
ce
updfstab: Using deprecated /dev/sg mechanism instead of SG_IO on the actual devi
ce
updfstab: Using deprecated /dev/sg mechanism instead of SG_IO on the actual devi
ce
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Output from my /proc/scsi/scsi:
| Code: | mypc> cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: E-IDE Model: CD-ROM CR-852E Rev: 1.11
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi10 Channel: 00 Id: 00 Lun: 00
Vendor: PNY Model: Attache 2.0 Rev: 4.85
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi14 Channel: 00 Id: 00 Lun: 00
Vendor: GENERIC Model: USB Storage-SMC Rev: I03A
Type: Direct-Access ANSI SCSI revision: 02
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QUESTION: What should be the entry in /etc/fstab for this?
The device simply can't be read.
Please help.
Thanks.
Hari
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blaggard
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| Posted: Tue Nov 09, 2004 5:10 am Post subject: |
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Hi,
Did some more research on this and found out that if you have an n-in-1 card reader that can deal with multiple cards, then I have to make sure that "Probe all LUNs on each SCSI device" (CONFIG_SCSI_MULTI_LUN) is enabled in the kernel.
How do I do that?
Thanks.
Hari
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jebba
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| Posted: Tue Nov 09, 2004 9:44 am Post subject: |
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| blaggard wrote: | Hi,
Did some more research on this and found out that if you have an n-in-1 card reader that can deal with multiple cards, then I have to make sure that "Probe all LUNs on each SCSI device" (CONFIG_SCSI_MULTI_LUN) is enabled in the kernel. |
I think it is enabled by default.
-Jeff
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kazim
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| Posted: Sun Nov 14, 2004 12:17 am Post subject: |
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hey,
This how-to was done on BLAG 9002 mind you... not sure but things is probly different in whatever alpha :twisted: you are using now.
proc/scsi indicates that your memstick is located on dev 0,0,1. Use the script above but on bus #1 instead of zero, thus:
| Code: |
echo "scsi add-single-device 0 0 1 0" > /proc/scsi/scsi
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let us know if that gets you any further, or not.
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