problem with group permissions

htamayo · 11-15-2010, 02:52 PM

Hi, I need read-write-execute permissions over a logic device, by default the user and group owners looks like this:

Code:

brw-rws--- 1 root disk 254, 0 210-11-15 12:32 /dev/mapper/usbdisk

So, i want to access it using a different user than root, so I add my own user to be part of the "disk" group but when I try to read-write the device I can't.

if it's useful, usbdisk is mounted like this:

Code:

mount /dev/mapper/usbdisk /mydocs

my question is: what permissions should I set to the group to allow read-write-execute for all users of the group "disk"?

regards

stress_junkie · 11-15-2010, 03:13 PM

You have got to log off and log back on for the group membership to take effect.

Check the permissions on the mount point after the usbdisk is mounted. You may have to change the permissions there as well.

Code:

mount /dev/mapper/usbdisk /mydocs
ls -ld /mydocs
chgrp disk /mydocs
chmod g=rwx /mydocs