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Re: [PATCH v4 18/19] iotests: Add tests for invalid Quorum @replaces
From: |
Max Reitz |
Subject: |
Re: [PATCH v4 18/19] iotests: Add tests for invalid Quorum @replaces |
Date: |
Tue, 18 Feb 2020 13:49:04 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 |
On 18.02.20 13:38, Kevin Wolf wrote:
> Am 18.02.2020 um 11:34 hat Max Reitz geschrieben:
>> Add two tests to see that you cannot replace a Quorum child with the
>> mirror job while the child is in use by a different parent.
>>
>> Signed-off-by: Max Reitz <address@hidden>
>> Reviewed-by: Vladimir Sementsov-Ogievskiy <address@hidden>
>> ---
>> tests/qemu-iotests/041 | 70 +++++++++++++++++++++++++++++++++++++-
>> tests/qemu-iotests/041.out | 4 +--
>> 2 files changed, 71 insertions(+), 3 deletions(-)
>>
>> diff --git a/tests/qemu-iotests/041 b/tests/qemu-iotests/041
>> index 1d9e64ff6d..53c8671969 100755
>> --- a/tests/qemu-iotests/041
>> +++ b/tests/qemu-iotests/041
>> @@ -20,6 +20,7 @@
>>
>> import time
>> import os
>> +import re
>> import iotests
>> from iotests import qemu_img, qemu_io
>>
>> @@ -34,6 +35,8 @@ quorum_img3 = os.path.join(iotests.test_dir, 'quorum3.img')
>> quorum_repair_img = os.path.join(iotests.test_dir, 'quorum_repair.img')
>> quorum_snapshot_file = os.path.join(iotests.test_dir, 'quorum_snapshot.img')
>>
>> +nbd_sock_path = os.path.join(iotests.test_dir, 'nbd.sock')
>> +
>> class TestSingleDrive(iotests.QMPTestCase):
>> image_len = 1 * 1024 * 1024 # MB
>> qmp_cmd = 'drive-mirror'
>> @@ -892,7 +895,8 @@ class TestRepairQuorum(iotests.QMPTestCase):
>>
>> def tearDown(self):
>> self.vm.shutdown()
>> - for i in self.IMAGES + [ quorum_repair_img, quorum_snapshot_file ]:
>> + for i in self.IMAGES + [ quorum_repair_img, quorum_snapshot_file,
>> + nbd_sock_path ]:
>> # Do a try/except because the test may have deleted some images
>> try:
>> os.remove(i)
>> @@ -1032,6 +1036,70 @@ class TestRepairQuorum(iotests.QMPTestCase):
>> self.assert_has_block_node("repair0", quorum_repair_img)
>> self.vm.assert_block_path('quorum0', '/children.1', 'repair0')
>>
>> + def test_with_other_parent(self):
>> + """
>> + Check that we cannot replace a Quorum child when it has other
>> + parents.
>> + """
>> + result = self.vm.qmp('nbd-server-start',
>> + addr={
>> + 'type': 'unix',
>> + 'data': {'path': nbd_sock_path}
>> + })
>> + self.assert_qmp(result, 'return', {})
>> +
>> + result = self.vm.qmp('nbd-server-add', device='img1')
>> + self.assert_qmp(result, 'return', {})
>> +
>> + result = self.vm.qmp('drive-mirror', job_id='mirror',
>> device='quorum0',
>> + sync='full', node_name='repair0',
>> replaces='img1',
>> + target=quorum_repair_img,
>> format=iotests.imgfmt)
>> + self.assert_qmp(result, 'error/desc',
>> + "Cannot replace 'img1' by a node mirrored from "
>> + "'quorum0', because it cannot be guaranteed that
>> doing "
>> + "so would not lead to an abrupt change of visible
>> data")
>> +
>> + def test_with_other_parents_after_mirror_start(self):
>> + """
>> + The same as test_with_other_parent(), but add the NBD server
>> + only when the mirror job is already running.
>> + """
>> + result = self.vm.qmp('nbd-server-start',
>> + addr={
>> + 'type': 'unix',
>> + 'data': {'path': nbd_sock_path}
>> + })
>> + self.assert_qmp(result, 'return', {})
>> +
>> + result = self.vm.qmp('drive-mirror', job_id='mirror',
>> device='quorum0',
>> + sync='full', node_name='repair0',
>> replaces='img1',
>> + target=quorum_repair_img,
>> format=iotests.imgfmt)
>> + self.assert_qmp(result, 'return', {})
>> +
>> + result = self.vm.qmp('nbd-server-add', device='img1')
>> + self.assert_qmp(result, 'return', {})
>> +
>> + # The full error message goes to stderr, we will check it later
>> + self.complete_and_wait('mirror',
>> + completion_error='Operation not permitted')
>> +
>> + # Should not have been replaced
>> + self.vm.assert_block_path('quorum0', '/children.1', 'img1')
>> +
>> + # Check the full error message now
>> + self.vm.shutdown()
>> + log = self.vm.get_log()
>> + log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log)
>> + log = re.sub(r'^Formatting.*\n', '', log)
>> + log = re.sub(r'\n\[I \+\d+\.\d+\] CLOSED\n?$', '', log)
>> + log = re.sub(r'^qemu-system-[^:]*: ', '', log)
>
> I would have applied the series, but:
>
> +.........................F....................................................................
> +======================================================================
> +FAIL: test_with_other_parents_after_mirror_start (__main__.TestRepairQuorum)
> +----------------------------------------------------------------------
> +Traceback (most recent call last):
> + File "041", line 1099, in test_with_other_parents_after_mirror_start
> + "it can no longer be guaranteed that doing so would " +
> +AssertionError: "qemu: Can no longer replace 'img1' by 're[107 chars]data"
> != "Can no longer replace 'img1' by 'repair0'[101 chars]data"
> +- qemu: Can no longer replace 'img1' by 'repair0', because it can no longer
> be guaranteed that doing so would not lead to an abrupt change of visible data
> +? ------
> ++ Can no longer replace 'img1' by 'repair0', because it can no longer be
> guaranteed that doing so would not lead to an abrupt change of visible data
> +
> +
>
> If you agree, I can just change this line while applying into:
>
> log = re.sub(r'^qemu[^:]*: ', '', log)
Sure, thanks! I just hope noone uses the QEMU environment variable to
point to something that isn’t prefixed by “qemu”...
Max
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- [PATCH v4 09/19] block: Use bdrv_recurse_can_replace(), (continued)
- [PATCH v4 09/19] block: Use bdrv_recurse_can_replace(), Max Reitz, 2020/02/18
- [PATCH v4 11/19] mirror: Double-check immediately before replacing, Max Reitz, 2020/02/18
- [PATCH v4 12/19] quorum: Stop marking it as a filter, Max Reitz, 2020/02/18
- [PATCH v4 13/19] iotests: Use complete_and_wait() in 155, Max Reitz, 2020/02/18
- [PATCH v4 14/19] iotests: Add VM.assert_block_path(), Max Reitz, 2020/02/18
- [PATCH v4 15/19] iotests/041: Drop superfluous shutdowns, Max Reitz, 2020/02/18
- [PATCH v4 16/19] iotests: Resolve TODOs in 041, Max Reitz, 2020/02/18
- [PATCH v4 17/19] iotests: Use self.image_len in TestRepairQuorum, Max Reitz, 2020/02/18
- [PATCH v4 18/19] iotests: Add tests for invalid Quorum @replaces, Max Reitz, 2020/02/18
- [PATCH v4 19/19] iotests: Check that @replaces can replace filters, Max Reitz, 2020/02/18
- Re: [PATCH v4 00/19] block: Fix check_to_replace_node(), Kevin Wolf, 2020/02/18