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authorJohn Snow <jsnow@redhat.com>2016-11-08 01:50:39 -0500
committerJeff Cody <jcody@redhat.com>2016-11-14 22:47:34 -0500
commit0aef09b9c916e8824cabc55a7fd2ca1609b94810 (patch)
treedbf1e235a8c543823840abbc82e264a84aac6187 /tests/qemu-iotests/124
parent111049a4ecefc9cf1ac75c773f4c5c165f27fe63 (diff)
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iotests: add transactional failure race test
Add a regression test for the case found by Vladimir. Reported-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-id: 1478587839-9834-7-git-send-email-jsnow@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
Diffstat (limited to 'tests/qemu-iotests/124')
-rw-r--r--tests/qemu-iotests/12453
1 files changed, 35 insertions, 18 deletions
diff --git a/tests/qemu-iotests/124 b/tests/qemu-iotests/124
index f06938e..d0d2c2b 100644
--- a/tests/qemu-iotests/124
+++ b/tests/qemu-iotests/124
@@ -395,19 +395,7 @@ class TestIncrementalBackup(TestIncrementalBackupBase):
self.check_backups()
- def test_transaction_failure(self):
- '''Test: Verify backups made from a transaction that partially fails.
-
- Add a second drive with its own unique pattern, and add a bitmap to each
- drive. Use blkdebug to interfere with the backup on just one drive and
- attempt to create a coherent incremental backup across both drives.
-
- verify a failure in one but not both, then delete the failed stubs and
- re-run the same transaction.
-
- verify that both incrementals are created successfully.
- '''
-
+ def do_transaction_failure_test(self, race=False):
# Create a second drive, with pattern:
drive1 = self.add_node('drive1')
self.img_create(drive1['file'], drive1['fmt'])
@@ -451,9 +439,10 @@ class TestIncrementalBackup(TestIncrementalBackupBase):
self.assertFalse(self.vm.get_qmp_events(wait=False))
# Emulate some writes
- self.hmp_io_writes(drive0['id'], (('0xab', 0, 512),
- ('0xfe', '16M', '256k'),
- ('0x64', '32736k', '64k')))
+ if not race:
+ self.hmp_io_writes(drive0['id'], (('0xab', 0, 512),
+ ('0xfe', '16M', '256k'),
+ ('0x64', '32736k', '64k')))
self.hmp_io_writes(drive1['id'], (('0xba', 0, 512),
('0xef', '16M', '256k'),
('0x46', '32736k', '64k')))
@@ -463,7 +452,8 @@ class TestIncrementalBackup(TestIncrementalBackupBase):
target1 = self.prepare_backup(dr1bm0)
# Ask for a new incremental backup per-each drive,
- # expecting drive1's backup to fail:
+ # expecting drive1's backup to fail. In the 'race' test,
+ # we expect drive1 to attempt to cancel the empty drive0 job.
transaction = [
transaction_drive_backup(drive0['id'], target0, sync='incremental',
format=drive0['fmt'], mode='existing',
@@ -488,9 +478,15 @@ class TestIncrementalBackup(TestIncrementalBackupBase):
self.assert_no_active_block_jobs()
# Delete drive0's successful target and eliminate our record of the
- # unsuccessful drive1 target. Then re-run the same transaction.
+ # unsuccessful drive1 target.
dr0bm0.del_target()
dr1bm0.del_target()
+ if race:
+ # Don't re-run the transaction, we only wanted to test the race.
+ self.vm.shutdown()
+ return
+
+ # Re-run the same transaction:
target0 = self.prepare_backup(dr0bm0)
target1 = self.prepare_backup(dr1bm0)
@@ -511,6 +507,27 @@ class TestIncrementalBackup(TestIncrementalBackupBase):
self.vm.shutdown()
self.check_backups()
+ def test_transaction_failure(self):
+ '''Test: Verify backups made from a transaction that partially fails.
+
+ Add a second drive with its own unique pattern, and add a bitmap to each
+ drive. Use blkdebug to interfere with the backup on just one drive and
+ attempt to create a coherent incremental backup across both drives.
+
+ verify a failure in one but not both, then delete the failed stubs and
+ re-run the same transaction.
+
+ verify that both incrementals are created successfully.
+ '''
+ self.do_transaction_failure_test()
+
+ def test_transaction_failure_race(self):
+ '''Test: Verify that transactions with jobs that have no data to
+ transfer do not cause race conditions in the cancellation of the entire
+ transaction job group.
+ '''
+ self.do_transaction_failure_test(race=True)
+
def test_sync_dirty_bitmap_missing(self):
self.assert_no_active_block_jobs()