[KVM-AUTOTEST PATCH 08/28] KVM test: migration_with_file_transfer: verify transfer correctness

Michael Goldish
2010-12-27T16:01:35Z

After the transfer, copy the file back from the guest to the host and make sure
the returned file is identical to the one sent to the guest.

Signed-off-by: Michael Goldish <mgoldish@redhat.com>
---
.../kvm/tests/migration_with_file_transfer.py | 34 +++++++++++++++++---
1 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/client/tests/kvm/tests/migration_with_file_transfer.py b/client/tests/kvm/tests/migration_with_file_transfer.py
index 73e70b9..6a2ab06 100644
--- a/client/tests/kvm/tests/migration_with_file_transfer.py
+++ b/client/tests/kvm/tests/migration_with_file_transfer.py
@@ -35,15 +35,16 @@ def run_migration_with_file_transfer(test, params, env):
(vm.name, address,
kvm_utils.generate_random_string(4)))
host_path = "/tmp/file-%s" % kvm_utils.generate_random_string(6)
+ host_path_returned = "%s-returned" % host_path
guest_path = params.get("guest_path", "/tmp/file")
- file_size = params.get("file_size", "1000")
+ file_size = params.get("file_size", "500")
transfer_timeout = int(params.get("transfer_timeout", "240"))

try:
- utils.run("dd if=/dev/zero of=%s bs=1M count=%s" % (host_path,
- file_size))
+ utils.run("dd if=/dev/urandom of=%s bs=1M count=%s" % (host_path,
+ file_size))

- # Transfer file from host to guest in the backgroud
+ logging.info("Transferring file from host to guest")
bg = kvm_utils.Thread(kvm_utils.copy_files_to,
(address, client, username, password, port,
host_path, guest_path, log_filename,
@@ -57,9 +58,32 @@ def run_migration_with_file_transfer(test, params, env):
finally:
# bg.join() returns the value returned by copy_files_to()
if not bg.join():
- raise error.TestFail("File transfer failed")
+ raise error.TestFail("File transfer from host to guest failed")
+
+ logging.info("Transferring file back from guest to host")
+ bg = kvm_utils.Thread(kvm_utils.copy_files_from,
+ (address, client, username, password, port,
+ host_path, guest_path, log_filename,
+ transfer_timeout))
+ bg.start()
+ try:
+ while bg.is_alive():
+ logging.info("File transfer not ended, starting a round of "
+ "migration...")
+ vm = kvm_test_utils.migrate(vm, env, mig_timeout, mig_protocol)
+ finally:
+ if not bg.join():
+ raise error.TestFail("File transfer from guest to host failed")
+
+ # Make sure the returned file is indentical to the original one
+ orig_hash = utils.hash_file(host_path)
+ returned_hash = utils.hash_file(host_path_returned)
+ if orig_hash != returned_hash:
+ raise error.TestFail("Returned file differs from original one")

finally:
session.close()
if os.path.isfile(host_path):
os.remove(host_path)
+ if os.path.isfile(host_path_returned):
+ os.remove(host_path_returned)
--
1.7.3.3