#!/bin/bash
#   export the image of the CentOS-5.3 /var/cache/yum for updates
# $Id: do_exports 1.2 2009/05/04 13:48:31 root Stable root $

function ExPort() {
  # See if the mount point is present
  SourcePt=$1
  MountPt=/exports/$2
  ExpOptions="${3:-rw,insecure,no_root_squash}"

  # see if the mount point exists
  [ -d ${MountPt} ] || mkdir -p ${MountPt} || return 2

  # bind mount the directory where you export it
  #   this avoids changing the mount in all user machines
  if ! mount | grep -q "${MountPt}.*bind"; then
    mount -o bind ${SourcePt} ${MountPt} || 
    return 2
  fi

  # now do the actual export
  exportfs -o ${ExpOptions} 10.4.60.0/23:${MountPt}
}

# unexport all, start over
exportfs -uav

# do the approved exports
#   /var/cache/yum for all CentOS 5.3 machines
ExPort /mnt/tmp/backups/C53cache C53VCY
#   /var/cache/yum for FC11
ExPort /mnt/tmp/workspace/FC11/VCY/ FC11VCY
#   FC10 workspace
ExPort /mnt/tmp/10space tenspace
#   in case the master copy of /common is down
#   machines will try to use this one
ExPort /mnt/backups/common common ro,insecure