def cleanup_host_disk(client, *args): # NOQA
# clean disk
for vol_name in args:
# umount disk
common.cleanup_host_disk(vol_name)
# clean volume
cleanup_volume(client, vol_name)
def cleanup_host_disk(client, *args): # NOQA
# clean disk
for vol_name in args:
# umount disk
common.cleanup_host_disk(vol_name)
# clean volume
cleanup_volume(client, vol_name)
def backing_image_content_test(client, volume_name_prefix, bi_name, bi_url): # NOQA
"""
Verify the content of the Backing Image is accessible and read-only for
all volumes.
1. Create a backing image. (Done by the caller)
2. Create a Volume with the backing image set then attach it to host node.
3. Verify that the all disk states in the backing image are "downloaded".
4. Verify volume can be directly mounted and there is already data in the
filesystem due to the backing image.
5. Verify the volume r/w.
6. Launch one more volume with the same backing image.
7. Verify the data content of the new volume is the same as the data in
step 4.
5. Do cleanup. (Done by the caller)
"""
lht_host_id = get_self_host_id()
volume_name1 = volume_name_prefix + "-1"
volume1 = create_and_check_volume(
client, volume_name1, 3,
str(BACKING_IMAGE_EXT4_SIZE), bi_name)
volume1.attach(hostId=lht_host_id)
volume1 = wait_for_volume_healthy(client, volume_name1)
assert volume1.backingImage == bi_name
assert volume1.size == str(BACKING_IMAGE_EXT4_SIZE)
backing_image = client.by_id_backing_image(bi_name)
assert backing_image.imageURL == bi_url
assert not backing_image.deletionTimestamp
assert len(backing_image.diskStateMap) == 3
for disk_id, state in iter(backing_image.diskStateMap.items()):
assert state == "downloaded"
# Since there is already a filesystem with data in the backing image,
# we can directly mount and access the volume without `mkfs`.
dev1 = get_volume_endpoint(volume1)
mount_path1 = os.path.join(DIRECTORY_PATH, volume_name1)
mount_disk(dev1, mount_path1)
output1 = subprocess.check_output(["ls", mount_path1])
# The following random write may crash the filesystem of volume1,
# need to umount it here
cleanup_host_disk(volume_name1)
# Verify r/w for the volume with a backing image
data = write_volume_random_data(volume1)
check_volume_data(volume1, data)
volume_name2 = volume_name_prefix + "-2"
volume2 = create_and_check_volume(
client, volume_name2, 3,
str(BACKING_IMAGE_EXT4_SIZE), bi_name)
volume2.attach(hostId=lht_host_id)
volume2 = wait_for_volume_healthy(client, volume_name2)
assert volume1.backingImage == bi_name
assert volume1.size == str(BACKING_IMAGE_EXT4_SIZE)
dev2 = get_volume_endpoint(volume2)
mount_path2 = os.path.join(DIRECTORY_PATH, volume_name2)
mount_disk(dev2, mount_path2)
output2 = subprocess.check_output(["ls", mount_path2])
# The output is the content of the backing image, which should keep
# unchanged
assert output2 == output1
cleanup_host_disk(volume_name2)
