yum install sg3_utils
rescan-scsi-bus.sh

echo "- - -" > /sys/class/scsi_host/host0/scan
echo "- - -" > /sys/class/scsi_host/host1/scan
echo "- - -" > /sys/class/scsi_host/host2/scan

echo 1 > /sys/class/scsi_device/0\:0\:0\:0/device/rescan
echo 1 > /sys/class/scsi_device/2\:0\:0\:0/device/rescan
echo 1 > /sys/class/scsi_device/2\:0\:1\:0/device/rescan
echo 1 > /sys/class/scsi_device/2\:0\:3\:0/device/rescan