block_disk_not_default_options: creates new test case

Creates a new test case that boots up a VM with a disk
configured with non-common options such as packed or
page-per-vq. Unplug the disk and hotplugs it again.

Signed-off-by: Mario Casquero <[email protected]>

qemu/tests/block_disk_not_default_options.py

@@ -0,0 +1,58 @@
+from virttest import error_context, qemu_qtree
+
+from provider.block_devices_plug import BlockDevicesPlug
+
+
+@error_context.context_aware
+def run(test, params, env):
+    """
+    Test the disk non-default options.
+
+    Steps:
+        1. Boot a VM with packed=true and page-per-vq=true
+        2. Verify the packed and page-per-vq values
+        3. Do some basic I/O operation in the VM
+        4. Unplug and hotplug the disk
+        5. Do again a basic I/O operation
+
+    :param test: QEMU test object.
+    :param params: Dictionary with the test parameters.
+    :param env: Dictionary with test environment.
+    """
+
+    def verify_non_default_options(option, possible_types):
+        """Verify the non-default values."""
+        error_context.context(f"Verify {option} from monitor.", test.log.info)
+        qtree = qemu_qtree.QtreeContainer()
+        qtree_option_value = False
+        try:
+            qtree.parse_info_qtree(vm.monitor.info("qtree"))
+        except AttributeError:
+            test.cancel("Monitor doesn't support qtree skip this test")
+        error_msg = (
+            f"'{option}' value mismatch: expected 'true' but report from monitor is: %s"
+        )
+
+        for node in qtree.get_nodes():
+            node_type = node.qtree["type"]
+            if isinstance(node, qemu_qtree.QtreeDev) and node_type in possible_types:
+                qtree_option_value = node.qtree[option]
+
+        if not qtree_option_value:
+            error_msg = error_msg % qtree_option_value
+            test.fail(error_msg)
+
+    vm = env.get_vm(params["main_vm"])
+    vm.verify_alive()
+    session = vm.wait_for_login(timeout=360)
+    session.cmd(params.get("dd_cmd"))
+
+    possible_types = {"virtio-blk-device", "virtio-scsi-device"}
+    verify_non_default_options("packed", possible_types)
+    possible_types = {"virtio-blk-pci", "virtio-scsi-pci"}
+    verify_non_default_options("page-per-vq", possible_types)
+
+    plug = BlockDevicesPlug(vm)
+    plug.unplug_devs_serial()
+    plug.hotplug_devs_serial()
+    session.cmd(params.get("dd_cmd"))

qemu/tests/cfg/block_disk_not_default_options.cfg

@@ -0,0 +1,19 @@
+- block_disk_not_default_options:
+    only virtio_blk, virtio_scsi
+    type = block_disk_not_default_options
+    only x86_64
+    start_vm = yes
+    images += " stg0"
+    boot_drive_stg0 = yes
+    image_name_stg0 = images/storage0
+    image_size_stg0 = 40G
+    remove_image_stg0 = yes
+    force_create_image_stg0 = yes
+    dd_cmd = "dd if=/dev/urandom of=test.txt bs=1M count=10"
+    variants:
+        - with_packed_and_ppv:
+            virtio_blk:
+                blk_extra_params_stg0 = "packed=true,page-per-vq=true"
+            virtio_scsi:
+                bus_extra_params_stg0 = "packed=true,page-per-vq=true"
+                drive_bus_stg0 = 1