Help adding USB card reader to /etc/fstab

qwijibow · 10-05-2005, 10:48 AM

I have a multi slot USB card reader. (internal)
the reader has 4 slots, each on different lun's
they use scsi emulation to mount each slot.

the problem however is this...

the card reader does not detect any cards that were not inserted dureing boot-up.

Attempting to mount a card inserted after boot-up gieves an error that there is no such partiton /dev/sdd1.

the solution is to use "hdparm -z /dev/sdd" to case the kernel to re-scan the partiton table.

after this, the card can be mounted sucessfully.

I am trying to setup my computer so that this process is done automatically.

Im getting close, but have not managed to think of a *perfect sollution*

my current solution....

I changed the file-sytem entery in fstab to read *card*.
e.g. /dev/sdd1 /mnt/sd card noauto,user,sync 0 0

then i wrote a script called /sbin/mount.card

this script is a mount helper script, and if automatically called by mount when mouting an fstab enters with filesystem = "card"

this heler script uses sudo to run hdparm -z /dev/device.
and then uses sudo again to mount the device.

This allows all users to mount the card as normal...

the problem.....

when mounting the disk with sudo in this fassion, mount logs the card as mounted with the following options..

/dev/sdd1 on /mnt/sd type vfat (rw,noexec,nosuid,nodev,sync)

The mount is of file-system vfat, and owned by root.

which means, that the normal user cannot un-mount the device.

ALSO, as the file-system is nolonger registered as "card" (there is no such filesystem) i cannot use an un-mount helper to unmount the card with SUDO.

WHAT is the solution here !?

i just need normal users to be able to mount and un-mount the memory card with normal mount tools suck as KDE.
(kde mounts removal media by calling "mount" with the mount point as the one and only parameter (uses fstab for other settings))

HELP !

Brian1 · 10-05-2005, 02:49 PM

I think all you need is the umask option for the fstab line. umask allows anyone to access it. Example:

Code:

/dev/sdd1               /mnt/sdd1               auto    umask=000,users,noauto,owner,rw,sync,dirsync   0 0

Brian1

qwijibow · 10-05-2005, 03:35 PM

Thanks for that, it was just a type error... i used "user" option intead of "users"

THANKS !

Brian1 · 10-05-2005, 04:51 PM

Been there and done similiar mistakes myself. Glad to here you have it working.

Brian1