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#!/bin/sh
# Script to create device nodes for SMART array controllers
# Usage:
#       mkdev.cciss [num controllers] [num log volumes] [num partitions]
#
# With no arguments, the script assumes 1 controller, 16 logical volumes,
# and 16 partitions/volume, which is adequate for most configurations.
#
# If you had 5 controllers and were planning on no more than 4 logical volumes
# each, using a maximum of 8 partitions per volume, you could say:
#
# mkdev.cciss 5 4 8
#
# Of course, this has no real benefit over "mkdev.cciss 5" except that it
# doesn't create so many device nodes in /dev/cciss.

NR_CTLR=${1-1}
NR_VOL=${2-16}
NR_PART=${3-16}

if [ ! -d /dev/cciss ]; then
        mkdir -p /dev/cciss
fi

C=0; while [ $C -lt $NR_CTLR ]; do
        MAJ=`expr $C + 104`
        D=0; while [ $D -lt $NR_VOL ]; do
                P=0; while [ $P -lt $NR_PART ]; do
                        MIN=`expr $D \* 16 + $P`
                        if [ $P -eq 0 ]; then
                                mknod /dev/cciss/c${C}d${D} b $MAJ $MIN
                        else
                                mknod /dev/cciss/c${C}d${D}p${P} b $MAJ $MIN
                        fi
                        P=`expr $P + 1`
                done
                D=`expr $D + 1`
        done
        C=`expr $C + 1`
done