changing cards in a reader

[hoe-waa at hawaii.rr.com]

On Saturday, June 26, 2004 12:56 pm Scott Mitchell <scott+freebsd at fishballoon.org> 
responded thusly

> On Sat, Jun 26, 2004 at 11:39:25AM -1000, hoe-waa at hawaii.rr.com wrote:
> > Aloha
> > 
> > Hopefully this is a simple question. FreeBSD does not support my 
> > Olympus C-3000 Zoom camera so I bought a card reader (usb). It has
> > 4 slots and when I boot or just plug it in I get 4 drives 
> > (da0, da1, da2, & da3). If I have a SmartMedia card installed I 
> > also see da2s1.
> > 
> > da2s1 mounts fine and I am able to see and use all of the photo 
> files.> 
> > I have additional SM cards and would like to change the installed 
> card at 
> > will. If I do a umount and replace the card and try to mount 
> again I
> > get an error  "mount_msdosfs: /dev/da2s1: Invalid argument". I 
> should> say that the cards are different sizes. In order to mount 
> another card
> > I have to unplug the usb cable and re-plug it in with the new 
> card in 
> > the slot.
> > 
> > I have read man camcontrol and do not see an option I can use.
> > 
> > Is there a way to do this without unplugging and re-plugging the 
> cable?
> Try this (as root):
> 
> # camcontrol devlist
> 
> to find out which CAM device da2 belongs to.  On this machine I get:
> 
> <337 COMB  >                       at scbus1 target 0 lun 0 
> (pass0,da2)<DMI MultiFlash 3.00>              at scbus2 target 0 
> lun 0 (pass1,da4)
> <DMI MultiFlash 3.00>              at scbus2 target 0 lun 1 
> (da5,pass2)<DMI MultiFlash 3.00>              at scbus2 target 0 
> lun 2 (da6,pass3)
> <DMI MultiFlash 3.00>              at scbus2 target 0 lun 3 
> (da7,pass4)
> My SmartMedia slot happens to be da5, which is device 2:0:1.  After
> unmounting the card, you should be able to:
> 
> # camcontrol eject 2:0:1
> 
> using the appropriate device number for your system, of course.  
> Then swap
> cards and do:
> 
> # camcontrol rescan 2:0:1
> 
> which should generate some lines in /var/log/messages telling you 
> about the
> size of the new card.
> 
> You might want to look into setting up the automounter to do the 
> rescan and
> eject automatically when cards are mounted and unmounted, 
> respectively.
> Cheers,
> 
> 	Scott
> 
Aloha Scott and thanks for staying awake and responding.

I thought I had tried all of that camcontrol stuff
before I posted but I am getting old so I tried what
you suggested. Alas, it did not seem to help. Here is
the output of the attempt:

Boot with 128MB card installed.

hp# ls -l /dev/da*
crw-r-----  1 root  operator    4,  20 Jun 26 18:50 /dev/da0
crw-r-----  1 root  operator    4,  21 Jun 26 18:50 /dev/da1
crw-r-----  1 root  operator    4,  22 Jun 26 18:50 /dev/da2
crw-r-----  1 root  operator    4,  24 Jun 26 18:50 /dev/da2s1
crw-r-----  1 root  operator    4,  23 Jun 26 18:50 /dev/da3

hp# mount_msdosfs /dev/da2s1 /mnt/olympus
hp# ls -l /mnt/olympus
total 16
drwxr-xr-x  1 root  wheel  16384 Jan 13  2003 dcim

hp# camcontrol devlist
<USB2.0 CardReader CF RW 0814>     at scbus0 target 0 lun 0 (da0,pass0)
<USB2.0 CardReader SD RW 0814>     at scbus0 target 0 lun 1 (da1,pass1)
<USB2.0 CardReader SM RW 0814>     at scbus0 target 0 lun 2 (da2,pass2)
<USB2.0 CardReader MS RW 0814>     at scbus0 target 0 lun 3 (da3,pass3)


hp# umount /mnt/olympus
hp# camcontrol eject 0:0:2
Unit stopped successfully, Media ejected

Remove 128MB card and insert 8MB card

hp# camcontrol rescan 0:0:2
Re-scan of 0:0:2 was successful
hp# mount_msdosfs /dev/da2s1 /mnt/olympus
mount_msdosfs: /dev/da2s1: Invalid argument

Unplug and replug usb cable and then

hp# ls -l /mnt/olympus
total 16
drwxr-xr-x  1 root  wheel  8192 Jun 26 14:24 dcim
drwxr-xr-x  1 root  wheel  8192 Jan  1  1980 imolym

Any other suggestions. (I hope :o))

Robert