Documentation/mkdev.ida

   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
  17 NR_CTLR=${1-1}
  18 NR_VOL=${2-16}
  19 NR_PART=${3-16}
  20
  21 if [ ! -d /dev/ida ]; then
  22         mkdir -p /dev/ida
  23 fi
  24
  25 C=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`
  40 done