lvmoiscsi: add xva export/import test

Signed-off-by: Gaëtan Lehmann <[email protected]>

Author: glehmann

tests/storage/lvmoiscsi/test_lvmoiscsi_sr.py

@@ -4,6 +4,7 @@
 from lib.vdi import VDI
 from lib.vm import VM
 from tests.storage import vdi_is_open
+from tests.storage.storage import install_randstream
 
 # Requirements:
 # - one XCP-ng host >= 8.2
@@ -78,6 +79,34 @@ def test_coalesce(self, storage_test_vm: 'VM', vdi_on_lvmoiscsi_sr: 'VDI', vdi_o
             if new_vdi is not None:
                 new_vdi.destroy()
 
+    @pytest.mark.small_vm
+    @pytest.mark.parametrize("compression", ["none", "gzip", "zstd"])
+    def test_xva_export_import(self, vm_on_lvmoiscsi_sr: VM, compression):
+        vm = vm_on_lvmoiscsi_sr
+        vm.start()
+        vm.wait_for_vm_running_and_ssh_up()
+        install_randstream(vm)
+        # 500MiB, so we have some data to check and some empty spaces in the exported image
+        vm.ssh("randstream generate -v --size 500MiB /root/data")
+        vm.ssh("randstream validate -v --expected-checksum 24e905d6 /root/data")
+        vm.shutdown(verify=True)
+        xva_path = f'/tmp/{vm.uuid}.xva'
+        imported_vm = None
+        try:
+            vm.export(xva_path, compression)
+            # check that the zero blocks are not part of the result. Most of the data is from the random stream, so
+            # compression has little effect. We just check the result is between 500 and 700 MiB
+            size_mb = int(vm.host.ssh(f'du -sm {xva_path}').split()[0])
+            assert 500 < size_mb < 700, f"unexpected xva size: {size_mb}"
+            imported_vm = vm.host.import_vm(xva_path, vm.vdis[0].sr.uuid)
+            imported_vm.start()
+            imported_vm.wait_for_vm_running_and_ssh_up()
+            imported_vm.ssh("randstream validate -v --expected-checksum 24e905d6 /root/data")
+        finally:
+            if imported_vm is not None:
+                imported_vm.destroy()
+            vm.host.ssh(f'rm -f {xva_path}')
+
     # *** tests with reboots (longer tests).
 
     @pytest.mark.reboot