Commit 24618f53 authored by John Snow's avatar John Snow Committed by Kevin Wolf
Browse files

iotests: add incremental backup failure recovery test 



Test the failure case for incremental backups.

Signed-off-by: default avatarJohn Snow <jsnow@redhat.com>
Reviewed-by: default avatarMax Reitz <mreitz@redhat.com>
Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Message-id: 1429314609-29776-21-git-send-email-jsnow@redhat.com
Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent a3d71595

tests/qemu-iotests/124

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Original line number Diff line number Diff line
@@ -240,6 +240,63 @@ class TestIncrementalBackup(iotests.QMPTestCase): 
        self.check_backups()





    def test_incremental_failure(self):

        '''Test: Verify backups made after a failure are correct.



        Simulate a failure during an incremental backup block job,

        emulate additional writes, then create another incremental backup

        afterwards and verify that the backup created is correct.

        '''



        # Create a blkdebug interface to this img as 'drive1',

        # but don't actually create a new image.

        drive1 = self.add_node('drive1', self.drives[0]['fmt'],

                               path=self.drives[0]['file'],

                               backup=self.drives[0]['backup'])

        result = self.vm.qmp('blockdev-add', options={

            'id': drive1['id'],

            'driver': drive1['fmt'],

            'file': {

                'driver': 'blkdebug',

                'image': {

                    'driver': 'file',

                    'filename': drive1['file']

                },

                'set-state': [{

                    'event': 'flush_to_disk',

                    'state': 1,

                    'new_state': 2

                }],

                'inject-error': [{

                    'event': 'read_aio',

                    'errno': 5,

                    'state': 2,

                    'immediately': False,

                    'once': True

                }],

            }

        })

        self.assert_qmp(result, 'return', {})



        self.create_anchor_backup(self.drives[0])

        self.add_bitmap('bitmap0', drive1)

        # Note: at this point, during a normal execution,

        # Assume that the VM resumes and begins issuing IO requests here.



        self.hmp_io_writes(drive1['id'], (('0xab', 0, 512),

                                          ('0xfe', '16M', '256k'),

                                          ('0x64', '32736k', '64k')))



        result = self.create_incremental(validate=False)

        self.assertFalse(result)

        self.hmp_io_writes(drive1['id'], (('0x9a', 0, 512),

                                          ('0x55', '8M', '352k'),

                                          ('0x78', '15872k', '1M')))

        self.create_incremental()

        self.vm.shutdown()

        self.check_backups()





    def test_sync_dirty_bitmap_missing(self):

        self.assert_no_active_block_jobs()

        self.files.append(self.err_img)

tests/qemu-iotests/124.out

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Ran 3 tests

Ran 4 tests



OK