Function compareChecksum

tools/marvin/marvin/lib/common.py:1702–1767

Create md5 checksum of the data present on the disk and compare it with the given checksum

(
        apiclient,
        service=None,
        original_checksum=None,
        disk_type=None,
        virt_machine=None
        )

def compareChecksum(
        apiclient,
        service=None,
        original_checksum=None,
        disk_type=None,
        virt_machine=None
        ):
    """
    Create md5 checksum of the data present on the disk and compare
    it with the given checksum
    """
    if virt_machine.state != "Running":
        virt_machine.start(apiclient)

    try:
        # Login to VM to verify test directories and files
        ssh = SshClient(
            virt_machine.ssh_ip,
            virt_machine.ssh_port,
            virt_machine.username,
            virt_machine.password
        )
    except Exception:
        raise Exception("SSH access failed for server with IP address: %s" %
                    virt_machine.ssh_ip)

    # Mount datadiskdevice_1 because this is the first data disk of the new
    # virtual machine
    cmds = ["blkid",
            "fdisk -l",
            "mkdir -p %s" % service["data_write_paths"]["mount_dir"],
            "mount -t ext3 %s1 %s" % (
                service["volume_write_path"][
                    virt_machine.hypervisor.lower()][disk_type],
                service["data_write_paths"]["mount_dir"]
            ),
            ]

    for c in cmds:
        ssh.execute(c)

    returned_data_0 = ssh.execute(
        "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"]
        ))

    n = hashlib.md5()
    n.update(returned_data_0[0])
    ckecksum_returned_data_0 = n.hexdigest()

    # Verify returned data
    assert original_checksum == ckecksum_returned_data_0, \
        "Cheskum does not match with checksum of original data"

    # Unmount the Sec Storage