Finding the minor number for a DCSS device
When you add a DCSS device, a minor number is assigned to it.
About this task
Unless you use dynamically created device nodes as provided by udev, you might need to know the minor device number that has been assigned to the DCSS.
When you add a DCSS device, a directory
of this form is created in sysfs:
/sys/devices/dcssblk/<dcss-name>This directory contains a symbolic link, block, that helps you to find out the device name and minor number. The link is of the form ../../../block/dcssblk<n>, where dcssblk<n> is the device name and <n> is the minor number.
Example
To find out the minor number that is assigned
to a DCSS device that is represented by the directory /sys/devices/dcssblk/MYDCSS issue:
# readlink /sys/devices/dcssblk/MYDCSS/block
../../../block/dcssblk00.