Merge pull request #2223 from aliang123/1831968

blockdev_snapshot_install:snapshot during guest installation

qemu/tests/blockdev_snapshot_install.py

+import time
+import logging
+import random
+
+from virttest import utils_test
+from virttest import utils_misc
+from virttest.tests import unattended_install
+
+from provider.blockdev_snapshot_base import BlockDevSnapshotTest
+
+
+def run(test, params, env):
+    """
+    Backup VM disk test when VM reboot
+
+    1) Install guest
+    2) Do snapshot during guest
+    3) Rebase snapshot to base after installation finished
+    4) Start guest with snapshot
+    :param test: test object
+    :param params: Dictionary with the test parameters
+    :param env: Dictionary with test environment.
+    """
+    def tag_for_install(vm, tag):
+        if vm.serial_console:
+            serial_output = vm.serial_console.get_output()
+            if tag in serial_output:
+                return True
+        logging.info("VM has not started yet")
+        return False
+
+    base_image = params.get("images", "image1").split()[0]
+    params.update(
+        {"image_format_%s" % base_image: params["image_format"]})
+    snapshot_test = BlockDevSnapshotTest(test, params, env)
+    args = (test, params, env)
+    bg = utils_test.BackgroundTest(unattended_install.run, args)
+    bg.start()
+    if bg.is_alive():
+        tag = params["tag_for_install_start"]
+        if utils_misc.wait_for(lambda: tag_for_install(snapshot_test.main_vm, tag), 120, 10, 5):
+            logging.info("sleep random time before do snapshots")
+            time.sleep(random.randint(120, 600))
+            snapshot_test.pre_test()
+            try:
+                snapshot_test.create_snapshot()
+                try:
+                    bg.join(timeout=1200)
+                except Exception:
+                    raise
+                snapshot_test.verify_snapshot()
+                snapshot_test.clone_vm.wait_for_login()
+            finally:
+                snapshot_test.post_test()
+        else:
+            test.fail("Failed to install guest")
+    else:
+        test.fail("Background process:installation not started")

qemu/tests/cfg/blockdev_snapshot_install.cfg

+- blockdev_snapshot_install:
+    type = blockdev_snapshot_install
+    virt_test_type = qemu
+    need_install = yes
+    start_vm = no
+    image_name_image1 = "images/snapshot_install"
+    medium = cdrom
+    installation = cdrom
+    kernel = vmlinuz
+    initrd = initrd.img
+    force_create_image_image1 = yes
+    image_aio = threads
+    unattended_delivery_method = cdrom
+    cdroms += " unattended"
+    index_enable = no
+    kill_vm = yes
+    tag_for_install_start = "Starting Login Service"
+    storage_type_default = "directory"
+    storage_pool = default
+    snapshot_tag = sn1
+    image_format_sn1 = qcow2
+    image_name_sn1 = images/sn1
+    device = "drive_image1"
+    base_tag = "image1"
+    rebase_mode = unsafe
+    only Linux
+    node = "drive_image1"
+    overlay = "drive_sn1"
+    qemu_force_use_drive_expression = no
+    no RHEL.5 RHEL.6 RHEL.7 RHEL.8.0 RHEL8.1