linux-old/Documentation/mkdev.ida
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   1#!/bin/sh
   2# Script to create device nodes for SMART array controllers
   3# Usage:
   4#       mkdev.ida [num controllers] [num log volumes] [num partitions]
   5#
   6# With no arguments, the script assumes 1 controller, 16 logical volumes,
   7# and 16 partitions/volume, which is adequate for most configurations.
   8#
   9# If you had 5 controllers and were planning on no more than 4 logical volumes
  10# each, using a maximum of 8 partitions per volume, you could say:
  11#
  12# mkdev.ida 5 4 8
  13#
  14# Of course, this has no real benefit over "mkdev.ida 5" except that it
  15# doesn't create so many device nodes in /dev/ida.
  16
  17NR_CTLR=${1-1}
  18NR_VOL=${2-16}
  19NR_PART=${3-16}
  20
  21if [ ! -d /dev/ida ]; then
  22        mkdir -p /dev/ida
  23fi
  24
  25C=0; while [ $C -lt $NR_CTLR ]; do
  26        MAJ=`expr $C + 72`
  27        D=0; while [ $D -lt $NR_VOL ]; do
  28                P=0; while [ $P -lt $NR_PART ]; do
  29                        MIN=`expr $D \* 16 + $P`
  30                        if [ $P -eq 0 ]; then
  31                                mknod /dev/ida/c${C}d${D} b $MAJ $MIN
  32                        else
  33                                mknod /dev/ida/c${C}d${D}p${P} b $MAJ $MIN
  34                        fi
  35                        P=`expr $P + 1`
  36                done
  37                D=`expr $D + 1`
  38        done
  39        C=`expr $C + 1`
  40done
  41
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