changing card in a reader (revisited)

[hoe-waa at hawaii.rr.com]

From: Anish Mistry <mistry.7 at osu.edu>
Date: Monday, August 23, 2004 7:41 am

> I started to get this too, and just got an answer on the CURRENT 
> list.  What 
> you need to do the rescan the GEOM structure is:
> cat /dev/null > /dev/da0
> cat /dev/null > /dev/da1
> etc...
> This worked for me.  Apparently camcontrol was doing stuff before 
> is wasn't 
> "supposed to."  Hope this helps.
> - -- 
> Anish Mistry


Aloha Anish and thanks for the info.

I was beginning to wonder if this was only my problem.

I still have an anomaly even with this procedure. Are
you running this as root?

Here is what I found.

I have a 32MB card in the reader. I start a terminal as a normal user
and verify permissions on the device. da2 and da2s1 are set perm in
/etc/devfs.conf

%pwd
/usr/home/robert
%ls -l /dev/da*
crw-r-----  1 root  operator    4,  30 Aug 23 16:50 /dev/da0
crw-r-----  1 root  operator    4,  31 Aug 23 16:50 /dev/da1
crw-rw----  1 root  operator    4,  32 Aug 23 16:50 /dev/da2
crw-rw----  1 root  operator    4,  34 Aug 23 16:50 /dev/da2s1
crw-r-----  1 root  operator    4,  33 Aug 23 16:50 /dev/da3
%
%mount_msdosfs /dev/da2s1 ~/camera
%ls -l camera/dcim/100olymp/
total 6752
-r-xr-xr-x  1 robert  robert  680523 Jan  1  2000 p1010074.jpg
-r-xr-xr-x  1 robert  robert  672166 Jun  5 07:19 p6050002.jpg
-r-xr-xr-x  1 robert  robert  677171 Jun  5 07:19 p6050003.jpg
-r-xr-xr-x  1 robert  robert  684658 Jun  5 07:23 p6050004.jpg
-r-xr-xr-x  1 robert  robert  664210 Jun  5 07:23 p6050005.jpg
-r-xr-xr-x  1 robert  robert  663849 Jun  5 07:24 p6050006.jpg
-r-xr-xr-x  1 robert  robert  689533 Jun  5 07:37 p6050009.jpg
-r-xr-xr-x  1 robert  robert  697084 Jun  5 07:37 p6050010.jpg
-r-xr-xr-x  1 robert  robert  691391 Jun  5 07:59 p6050011.jpg
-r-xr-xr-x  1 robert  robert  695390 Jun  5 07:59 p6050012.jpg
%
%umount camera

I can mount and display the photos so then I umount and change to 
a 128MB card.  After doing the folowing command as suggested, the 
permissions on da2s1 have changed.

%cat /dev/null > /dev/da2
%mount_msdosfs /dev/da2s1 ~/camera
mount_msdosfs: /dev/da2s1: Permission denied
%ls -l /dev/da*
crw-r-----  1 root  operator    4,  30 Aug 23 16:50 /dev/da0
crw-r-----  1 root  operator    4,  31 Aug 23 16:50 /dev/da1
crw-rw----  1 root  operator    4,  32 Aug 23 16:50 /dev/da2
crw-r-----  1 root  operator    4,  35 Aug 23 16:50 /dev/da2s1
crw-r-----  1 root  operator    4,  33 Aug 23 16:50 /dev/da3

I have to then su to root and change the permissions back to 660.
It then mounts fine.

%su
Password:
frankie# chmod 660 /dev/da2s1
frankie# exit
exit
%mount_msdosfs /dev/da2s1 ~/camera
%ls -l camera/dcim/100olymp/
total 2048
-rwxr-xr-x  1 robert  robert  684889 Jan  1  2000 p1010001.jpg
-rwxr-xr-x  1 robert  robert  687084 Jan  1  2000 p1010002.jpg
-rwxr-xr-x  1 robert  robert  712401 Jan  1  2000 p1010003.jpg
%

Is there something that I am missing? Why am I losing the w for
group operator?

Either way, this is better than unplugging the USB cable or running
fdisk -i on the slice.

Robert