Function createChecksum

tools/marvin/marvin/lib/common.py:1629–1699

Calculate the MD5 checksum of the disk by writing \ data on the disk where disk_type is either root disk or data disk @return: returns the calculated checksum

(service=None,
                   virtual_machine=None,
                   disk=None,
                   disk_type=None)

def createChecksum(service=None,
                   virtual_machine=None,
                   disk=None,
                   disk_type=None):

    """ Calculate the MD5 checksum of the disk by writing \
		data on the disk where disk_type is either root disk or data disk
	@return: returns the calculated checksum"""

    random_data_0 = random_gen(size=100)
    # creating checksum(MD5)
    m = hashlib.md5()
    m.update(random_data_0)
    ckecksum_random_data_0 = m.hexdigest()
    try:
        ssh_client = SshClient(
            virtual_machine.ssh_ip,
            virtual_machine.ssh_port,
            virtual_machine.username,
            virtual_machine.password
        )
    except Exception:
        raise Exception("SSH access failed for server with IP address: %s" %
                    virtual_machine.ssh_ip)

    # Format partition using ext3

    format_volume_to_ext3(
        ssh_client,
        service["volume_write_path"][
            virtual_machine.hypervisor.lower()][disk_type]
    )
    cmds = ["fdisk -l",
            "mkdir -p %s" % service["data_write_paths"]["mount_dir"],
            "mount -t ext3 %s1 %s" % (
                service["volume_write_path"][
                    virtual_machine.hypervisor.lower()][disk_type],
                service["data_write_paths"]["mount_dir"]
            ),
            "mkdir -p %s/%s/%s " % (
                service["data_write_paths"]["mount_dir"],
                service["data_write_paths"]["sub_dir"],
                service["data_write_paths"]["sub_lvl_dir1"],
            ),
            "echo %s > %s/%s/%s/%s" % (
                random_data_0,
                service["data_write_paths"]["mount_dir"],
                service["data_write_paths"]["sub_dir"],
                service["data_write_paths"]["sub_lvl_dir1"],
                service["data_write_paths"]["random_data"]
            ),
            "cat %s/%s/%s/%s" % (
                service["data_write_paths"]["mount_dir"],
                service["data_write_paths"]["sub_dir"],
                service["data_write_paths"]["sub_lvl_dir1"],
                service["data_write_paths"]["random_data"]
            )
            ]