diff options
Diffstat (limited to 'tests/integration_tests/modules/test_disk_setup.py')
| -rw-r--r-- | tests/integration_tests/modules/test_disk_setup.py | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/tests/integration_tests/modules/test_disk_setup.py b/tests/integration_tests/modules/test_disk_setup.py new file mode 100644 index 00000000..1fc96c52 --- /dev/null +++ b/tests/integration_tests/modules/test_disk_setup.py @@ -0,0 +1,192 @@ +import json +import os +import pytest +from uuid import uuid4 +from pycloudlib.lxd.instance import LXDInstance + +from cloudinit.subp import subp +from tests.integration_tests.instances import IntegrationInstance + +DISK_PATH = '/tmp/test_disk_setup_{}'.format(uuid4()) + + +def setup_and_mount_lxd_disk(instance: LXDInstance): + subp('lxc config device add {} test-disk-setup-disk disk source={}'.format( + instance.name, DISK_PATH).split()) + + +@pytest.yield_fixture +def create_disk(): + # 640k should be enough for anybody + subp('dd if=/dev/zero of={} bs=1k count=640'.format(DISK_PATH).split()) + yield + os.remove(DISK_PATH) + + +ALIAS_USERDATA = """\ +#cloud-config +device_aliases: + my_alias: /dev/sdb +disk_setup: + my_alias: + table_type: mbr + layout: [50, 50] + overwrite: True +fs_setup: +- label: fs1 + device: my_alias.1 + filesystem: ext4 +- label: fs2 + device: my_alias.2 + filesystem: ext4 +mounts: +- ["my_alias.1", "/mnt1"] +- ["my_alias.2", "/mnt2"] +""" + + +@pytest.mark.user_data(ALIAS_USERDATA) +@pytest.mark.lxd_setup.with_args(setup_and_mount_lxd_disk) +@pytest.mark.ubuntu +@pytest.mark.lxd_vm +class TestDeviceAliases: + """Test devices aliases work on disk setup/mount""" + + def test_device_alias(self, create_disk, client: IntegrationInstance): + log = client.read_from_file('/var/log/cloud-init.log') + assert ( + "updated disk_setup device entry 'my_alias' to '/dev/sdb'" + ) in log + assert 'changed my_alias.1 => /dev/sdb1' in log + assert 'changed my_alias.2 => /dev/sdb2' in log + assert 'WARN' not in log + assert 'Traceback' not in log + + lsblk = json.loads(client.execute('lsblk --json')) + sdb = [x for x in lsblk['blockdevices'] if x['name'] == 'sdb'][0] + assert len(sdb['children']) == 2 + assert sdb['children'][0]['name'] == 'sdb1' + assert sdb['children'][0]['mountpoint'] == '/mnt1' + assert sdb['children'][1]['name'] == 'sdb2' + assert sdb['children'][1]['mountpoint'] == '/mnt2' + + +PARTPROBE_USERDATA = """\ +#cloud-config +disk_setup: + /dev/sdb: + table_type: mbr + layout: [50, 50] + overwrite: True +fs_setup: + - label: test + device: /dev/sdb1 + filesystem: ext4 + - label: test2 + device: /dev/sdb2 + filesystem: ext4 +mounts: +- ["/dev/sdb1", "/mnt1"] +- ["/dev/sdb2", "/mnt2"] +""" + +UPDATED_PARTPROBE_USERDATA = """\ +#cloud-config +disk_setup: + /dev/sdb: + table_type: mbr + layout: [100] + overwrite: True +fs_setup: + - label: test3 + device: /dev/sdb1 + filesystem: ext4 +mounts: +- ["/dev/sdb1", "/mnt3"] +""" + + +@pytest.mark.user_data(PARTPROBE_USERDATA) +@pytest.mark.lxd_setup.with_args(setup_and_mount_lxd_disk) +@pytest.mark.ubuntu +@pytest.mark.lxd_vm +class TestPartProbeAvailability: + """Test disk setup works with partprobe + + Disk setup can run successfully on a mounted partition when + partprobe is being used. + + lp-1920939 + """ + + def _verify_first_disk_setup(self, client, log): + assert 'Traceback' not in log + assert 'WARN' not in log + lsblk = json.loads(client.execute('lsblk --json')) + sdb = [x for x in lsblk['blockdevices'] if x['name'] == 'sdb'][0] + assert len(sdb['children']) == 2 + assert sdb['children'][0]['name'] == 'sdb1' + assert sdb['children'][0]['mountpoint'] == '/mnt1' + assert sdb['children'][1]['name'] == 'sdb2' + assert sdb['children'][1]['mountpoint'] == '/mnt2' + + # Not bionic or xenial because the LXD agent gets in the way of us + # changing the userdata + @pytest.mark.not_bionic + @pytest.mark.not_xenial + def test_disk_setup_when_mounted( + self, create_disk, client: IntegrationInstance + ): + """Test lp-1920939. + + We insert an extra disk into our VM, format it to have two partitions, + modify our cloud config to mount devices before disk setup, and modify + our userdata to setup a single partition on the disk. + + This allows cloud-init to attempt disk setup on a mounted partition. + When blockdev is in use, it will fail with + "blockdev: ioctl error on BLKRRPART: Device or resource busy" along + with a warning and a traceback. When partprobe is in use, everything + should work successfully. + """ + log = client.read_from_file('/var/log/cloud-init.log') + self._verify_first_disk_setup(client, log) + + # Update our userdata and cloud.cfg to mount then perform new disk + # setup + client.write_to_file( + '/var/lib/cloud/seed/nocloud-net/user-data', + UPDATED_PARTPROBE_USERDATA, + ) + client.execute( + "sed -i 's/write-files/write-files\\n - mounts/' " + "/etc/cloud/cloud.cfg" + ) + + client.execute('cloud-init clean --logs') + client.restart() + + # Assert new setup works as expected + assert 'Traceback' not in log + assert 'WARN' not in log + + lsblk = json.loads(client.execute('lsblk --json')) + sdb = [x for x in lsblk['blockdevices'] if x['name'] == 'sdb'][0] + assert len(sdb['children']) == 1 + assert sdb['children'][0]['name'] == 'sdb1' + assert sdb['children'][0]['mountpoint'] == '/mnt3' + + def test_disk_setup_no_partprobe( + self, create_disk, client: IntegrationInstance + ): + """Ensure disk setup still works as expected without partprobe.""" + # We can't do this part in a bootcmd because the path has already + # been found by the time we get to the bootcmd + client.execute('rm $(which partprobe)') + client.execute('cloud-init clean --logs') + client.restart() + + log = client.read_from_file('/var/log/cloud-init.log') + self._verify_first_disk_setup(client, log) + + assert 'partprobe' not in log |