def METHOD_NAME():
    cmd = params['cmd_get_scsi_debug']
    process.run(cmd, shell=True)
    cmd = "cat " + params['dev_scsi_debug']
    params['scsi_debug_disk'] = process.getoutput(cmd, shell=True)
    if not params['scsi_debug_disk']:
        test.fail("Can not find scsi_debug disk %s" % cmd)
    cmd_dmsetup = params['cmd_dmsetup'].format(params['dev_mapper'],
                                               params['scsi_debug_disk'])
    process.run(cmd_dmsetup, shell=True)
    cmd = "dmsetup info " + params['dev_mapper']
    process.run(cmd, shell=True)
    params['mapper_disk'] = "/dev/mapper/" + params['dev_mapper']
    params['emulated_image'] = params['mapper_disk']