* [PULL 01/56] python: qemu: add timer parameter for qmp.accept socket
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 02/56] python: Reduce strictness of pylint's duplicate-code check Hanna Reitz
` (56 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Also add a new _qmp_timer field to the QEMUMachine class.
Let's change the default socket timeout to None, so that if
a subclass needs to add a timer, it can be done by modifying
this private field.
At the same time, restore the timer to be 15 seconds in iotests.py, to
give an upper bound to the QMP monitor test command execution.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-2-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
python/qemu/machine/machine.py | 7 +++++--
python/qemu/machine/qtest.py | 5 +++--
tests/qemu-iotests/iotests.py | 3 ++-
3 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/python/qemu/machine/machine.py b/python/qemu/machine/machine.py
index 971ed7e8c6..14c4d17eca 100644
--- a/python/qemu/machine/machine.py
+++ b/python/qemu/machine/machine.py
@@ -97,7 +97,8 @@ def __init__(self,
sock_dir: Optional[str] = None,
drain_console: bool = False,
console_log: Optional[str] = None,
- log_dir: Optional[str] = None):
+ log_dir: Optional[str] = None,
+ qmp_timer: Optional[float] = None):
'''
Initialize a QEMUMachine
@@ -112,6 +113,7 @@ def __init__(self,
@param drain_console: (optional) True to drain console socket to buffer
@param console_log: (optional) path to console log file
@param log_dir: where to create and keep log files
+ @param qmp_timer: (optional) default QMP socket timeout
@note: Qemu process is not started until launch() is used.
'''
# pylint: disable=too-many-arguments
@@ -121,6 +123,7 @@ def __init__(self,
self._binary = binary
self._args = list(args)
self._wrapper = wrapper
+ self._qmp_timer = qmp_timer
self._name = name or "qemu-%d" % os.getpid()
self._base_temp_dir = base_temp_dir
@@ -343,7 +346,7 @@ def _pre_launch(self) -> None:
def _post_launch(self) -> None:
if self._qmp_connection:
- self._qmp.accept()
+ self._qmp.accept(self._qmp_timer)
def _post_shutdown(self) -> None:
"""
diff --git a/python/qemu/machine/qtest.py b/python/qemu/machine/qtest.py
index d6d9c6a34a..592be263e0 100644
--- a/python/qemu/machine/qtest.py
+++ b/python/qemu/machine/qtest.py
@@ -115,7 +115,8 @@ def __init__(self,
name: Optional[str] = None,
base_temp_dir: str = "/var/tmp",
socket_scm_helper: Optional[str] = None,
- sock_dir: Optional[str] = None):
+ sock_dir: Optional[str] = None,
+ qmp_timer: Optional[float] = None):
# pylint: disable=too-many-arguments
if name is None:
@@ -124,7 +125,7 @@ def __init__(self,
sock_dir = base_temp_dir
super().__init__(binary, args, name=name, base_temp_dir=base_temp_dir,
socket_scm_helper=socket_scm_helper,
- sock_dir=sock_dir)
+ sock_dir=sock_dir, qmp_timer=qmp_timer)
self._qtest: Optional[QEMUQtestProtocol] = None
self._qtest_path = os.path.join(sock_dir, name + "-qtest.sock")
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 89663dac06..6b0db4ce54 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -570,10 +570,11 @@ class VM(qtest.QEMUQtestMachine):
def __init__(self, path_suffix=''):
name = "qemu%s-%d" % (path_suffix, os.getpid())
+ timer = 15.0
super().__init__(qemu_prog, qemu_opts, name=name,
base_temp_dir=test_dir,
socket_scm_helper=socket_scm_helper,
- sock_dir=sock_dir)
+ sock_dir=sock_dir, qmp_timer=timer)
self._num_drives = 0
def add_object(self, opts):
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 02/56] python: Reduce strictness of pylint's duplicate-code check
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
2021-09-01 15:15 ` [PULL 01/56] python: qemu: add timer parameter for qmp.accept socket Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 03/56] python: qemu: pass the wrapper field from QEMUQtestmachine to QEMUMachine Hanna Reitz
` (55 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: John Snow <jsnow@redhat.com>
Pylint prior to 2.8.3 (We pin at >= 2.8.0) includes function and method
signatures as part of its duplicate checking algorithm. This check does
not listen to pragmas, so the only way to disable it is to turn it off
completely or increase the minimum duplicate lines so that it doesn't
trigger for functions with long, multi-line signatures.
When we decide to upgrade to pylint 2.8.3 or greater, we will be able to
use 'ignore-signatures = true' to the config instead.
I'd prefer not to keep us on the very bleeding edge of pylint if I can
help it -- 2.8.3 came out only three days ago at time of writing.
See: https://github.com/PyCQA/pylint/pull/4474
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-3-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
python/setup.cfg | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/python/setup.cfg b/python/setup.cfg
index 14bab90288..83909c1c97 100644
--- a/python/setup.cfg
+++ b/python/setup.cfg
@@ -105,6 +105,11 @@ good-names=i,
# Ignore imports when computing similarities.
ignore-imports=yes
+# Minimum lines number of a similarity.
+# TODO: Remove after we opt in to Pylint 2.8.3. See commit msg.
+min-similarity-lines=6
+
+
[isort]
force_grid_wrap=4
force_sort_within_sections=True
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 03/56] python: qemu: pass the wrapper field from QEMUQtestmachine to QEMUMachine
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
2021-09-01 15:15 ` [PULL 01/56] python: qemu: add timer parameter for qmp.accept socket Hanna Reitz
2021-09-01 15:15 ` [PULL 02/56] python: Reduce strictness of pylint's duplicate-code check Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 04/56] docs/devel/testing: add debug section to the QEMU iotests chapter Hanna Reitz
` (54 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Message-Id: <20210809090114.64834-4-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
python/qemu/machine/qtest.py | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/python/qemu/machine/qtest.py b/python/qemu/machine/qtest.py
index 592be263e0..395cc8fbfe 100644
--- a/python/qemu/machine/qtest.py
+++ b/python/qemu/machine/qtest.py
@@ -112,6 +112,7 @@ class QEMUQtestMachine(QEMUMachine):
def __init__(self,
binary: str,
args: Sequence[str] = (),
+ wrapper: Sequence[str] = (),
name: Optional[str] = None,
base_temp_dir: str = "/var/tmp",
socket_scm_helper: Optional[str] = None,
@@ -123,7 +124,8 @@ def __init__(self,
name = "qemu-%d" % os.getpid()
if sock_dir is None:
sock_dir = base_temp_dir
- super().__init__(binary, args, name=name, base_temp_dir=base_temp_dir,
+ super().__init__(binary, args, wrapper=wrapper, name=name,
+ base_temp_dir=base_temp_dir,
socket_scm_helper=socket_scm_helper,
sock_dir=sock_dir, qmp_timer=qmp_timer)
self._qtest: Optional[QEMUQtestProtocol] = None
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 04/56] docs/devel/testing: add debug section to the QEMU iotests chapter
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (2 preceding siblings ...)
2021-09-01 15:15 ` [PULL 03/56] python: qemu: pass the wrapper field from QEMUQtestmachine to QEMUMachine Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 05/56] qemu-iotests: add option to attach gdbserver Hanna Reitz
` (53 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Introduce the "Debugging a test case" section, in preparation
to the additional flags that will be added in the next patches.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-5-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
docs/devel/testing.rst | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst
index 8a9cda33a5..8359f2ae37 100644
--- a/docs/devel/testing.rst
+++ b/docs/devel/testing.rst
@@ -224,6 +224,14 @@ another application on the host may have locked the file, possibly leading to a
test failure. If using such devices are explicitly desired, consider adding
``locking=off`` option to disable image locking.
+Debugging a test case
+-----------------------
+The following options to the ``check`` script can be useful when debugging
+a failing test:
+
+* ``-d`` (debug) just increases the logging verbosity, showing
+ for example the QMP commands and answers.
+
Test case groups
----------------
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 05/56] qemu-iotests: add option to attach gdbserver
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (3 preceding siblings ...)
2021-09-01 15:15 ` [PULL 04/56] docs/devel/testing: add debug section to the QEMU iotests chapter Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 06/56] qemu-iotests: delay QMP socket timers Hanna Reitz
` (52 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Define -gdb flag and GDB_OPTIONS environment variable
to python tests to attach a gdbserver to each qemu instance.
This patch only adds and parses this flag, it does not yet add
the implementation for it.
if -gdb is not provided but $GDB_OPTIONS is set, ignore the
environment variable.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-6-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/check | 6 +++++-
tests/qemu-iotests/iotests.py | 5 +++++
tests/qemu-iotests/testenv.py | 17 +++++++++++++++--
3 files changed, 25 insertions(+), 3 deletions(-)
diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
index 2dd529eb75..4365bb8066 100755
--- a/tests/qemu-iotests/check
+++ b/tests/qemu-iotests/check
@@ -36,6 +36,9 @@ def make_argparser() -> argparse.ArgumentParser:
help='pretty print output for make check')
p.add_argument('-d', dest='debug', action='store_true', help='debug')
+ p.add_argument('-gdb', action='store_true',
+ help="start gdbserver with $GDB_OPTIONS options \
+ ('localhost:12345' if $GDB_OPTIONS is empty)")
p.add_argument('-misalign', action='store_true',
help='misalign memory allocations')
p.add_argument('--color', choices=['on', 'off', 'auto'],
@@ -114,7 +117,8 @@ if __name__ == '__main__':
env = TestEnv(imgfmt=args.imgfmt, imgproto=args.imgproto,
aiomode=args.aiomode, cachemode=args.cachemode,
imgopts=args.imgopts, misalign=args.misalign,
- debug=args.debug, valgrind=args.valgrind)
+ debug=args.debug, valgrind=args.valgrind,
+ gdb=args.gdb)
if len(sys.argv) > 1 and sys.argv[-len(args.tests)-1] == '--':
if not args.tests:
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 6b0db4ce54..c86f239d81 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -74,6 +74,11 @@
qemu_prog = os.environ.get('QEMU_PROG', 'qemu')
qemu_opts = os.environ.get('QEMU_OPTIONS', '').strip().split(' ')
+gdb_qemu_env = os.environ.get('GDB_OPTIONS')
+qemu_gdb = []
+if gdb_qemu_env:
+ qemu_gdb = ['gdbserver'] + gdb_qemu_env.strip().split(' ')
+
imgfmt = os.environ.get('IMGFMT', 'raw')
imgproto = os.environ.get('IMGPROTO', 'file')
output_dir = os.environ.get('OUTPUT_DIR', '.')
diff --git a/tests/qemu-iotests/testenv.py b/tests/qemu-iotests/testenv.py
index 0c3fe75636..8501c6caf5 100644
--- a/tests/qemu-iotests/testenv.py
+++ b/tests/qemu-iotests/testenv.py
@@ -27,6 +27,7 @@
import glob
from typing import List, Dict, Any, Optional, ContextManager
+DEF_GDB_OPTIONS = 'localhost:12345'
def isxfile(path: str) -> bool:
return os.path.isfile(path) and os.access(path, os.X_OK)
@@ -72,7 +73,8 @@ class TestEnv(ContextManager['TestEnv']):
'QEMU_NBD_OPTIONS', 'IMGOPTS', 'IMGFMT', 'IMGPROTO',
'AIOMODE', 'CACHEMODE', 'VALGRIND_QEMU',
'CACHEMODE_IS_DEFAULT', 'IMGFMT_GENERIC', 'IMGOPTSSYNTAX',
- 'IMGKEYSECRET', 'QEMU_DEFAULT_MACHINE', 'MALLOC_PERTURB_']
+ 'IMGKEYSECRET', 'QEMU_DEFAULT_MACHINE', 'MALLOC_PERTURB_',
+ 'GDB_OPTIONS']
def prepare_subprocess(self, args: List[str]) -> Dict[str, str]:
if self.debug:
@@ -178,7 +180,8 @@ def __init__(self, imgfmt: str, imgproto: str, aiomode: str,
imgopts: Optional[str] = None,
misalign: bool = False,
debug: bool = False,
- valgrind: bool = False) -> None:
+ valgrind: bool = False,
+ gdb: bool = False) -> None:
self.imgfmt = imgfmt
self.imgproto = imgproto
self.aiomode = aiomode
@@ -186,6 +189,15 @@ def __init__(self, imgfmt: str, imgproto: str, aiomode: str,
self.misalign = misalign
self.debug = debug
+ if gdb:
+ self.gdb_options = os.getenv('GDB_OPTIONS', DEF_GDB_OPTIONS)
+ if not self.gdb_options:
+ # cover the case 'export GDB_OPTIONS='
+ self.gdb_options = DEF_GDB_OPTIONS
+ elif 'GDB_OPTIONS' in os.environ:
+ # to not propagate it in prepare_subprocess()
+ del os.environ['GDB_OPTIONS']
+
if valgrind:
self.valgrind_qemu = 'y'
@@ -285,6 +297,7 @@ def print_env(self) -> None:
TEST_DIR -- {TEST_DIR}
SOCK_DIR -- {SOCK_DIR}
SOCKET_SCM_HELPER -- {SOCKET_SCM_HELPER}
+GDB_OPTIONS -- {GDB_OPTIONS}
"""
args = collections.defaultdict(str, self.get_env())
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 06/56] qemu-iotests: delay QMP socket timers
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (4 preceding siblings ...)
2021-09-01 15:15 ` [PULL 05/56] qemu-iotests: add option to attach gdbserver Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 07/56] qemu_iotests: insert gdbserver command line as wrapper for qemu binary Hanna Reitz
` (51 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Attaching gdbserver implies that the qmp socket
should wait indefinitely for an answer from QEMU.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-7-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/iotests.py | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index c86f239d81..e176a84620 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -477,10 +477,14 @@ def __init__(self, seconds, errmsg="Timeout"):
self.seconds = seconds
self.errmsg = errmsg
def __enter__(self):
+ if qemu_gdb:
+ return self
signal.signal(signal.SIGALRM, self.timeout)
signal.setitimer(signal.ITIMER_REAL, self.seconds)
return self
def __exit__(self, exc_type, value, traceback):
+ if qemu_gdb:
+ return False
signal.setitimer(signal.ITIMER_REAL, 0)
return False
def timeout(self, signum, frame):
@@ -575,7 +579,7 @@ class VM(qtest.QEMUQtestMachine):
def __init__(self, path_suffix=''):
name = "qemu%s-%d" % (path_suffix, os.getpid())
- timer = 15.0
+ timer = 15.0 if not qemu_gdb else None
super().__init__(qemu_prog, qemu_opts, name=name,
base_temp_dir=test_dir,
socket_scm_helper=socket_scm_helper,
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 07/56] qemu_iotests: insert gdbserver command line as wrapper for qemu binary
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (5 preceding siblings ...)
2021-09-01 15:15 ` [PULL 06/56] qemu-iotests: delay QMP socket timers Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 08/56] qemu-iotests: add gdbserver option to script tests too Hanna Reitz
` (50 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-8-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/iotests.py | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index e176a84620..e7e3d92d3e 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -580,7 +580,8 @@ class VM(qtest.QEMUQtestMachine):
def __init__(self, path_suffix=''):
name = "qemu%s-%d" % (path_suffix, os.getpid())
timer = 15.0 if not qemu_gdb else None
- super().__init__(qemu_prog, qemu_opts, name=name,
+ super().__init__(qemu_prog, qemu_opts, wrapper=qemu_gdb,
+ name=name,
base_temp_dir=test_dir,
socket_scm_helper=socket_scm_helper,
sock_dir=sock_dir, qmp_timer=timer)
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 08/56] qemu-iotests: add gdbserver option to script tests too
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (6 preceding siblings ...)
2021-09-01 15:15 ` [PULL 07/56] qemu_iotests: insert gdbserver command line as wrapper for qemu binary Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 09/56] docs/devel/testing: add -gdb option to the debugging section of QEMU iotests Hanna Reitz
` (49 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Remove read timer in test script when GDB_OPTIONS are set,
so that the bash tests won't timeout while running gdb.
The only limitation here is that running a script with gdbserver
will make the test output mismatch with the expected
results, making the test fail.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20210809090114.64834-9-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/common.qemu | 7 ++++++-
tests/qemu-iotests/common.rc | 8 +++++++-
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/tests/qemu-iotests/common.qemu b/tests/qemu-iotests/common.qemu
index 0fc52d20d7..0f1fecc68e 100644
--- a/tests/qemu-iotests/common.qemu
+++ b/tests/qemu-iotests/common.qemu
@@ -85,7 +85,12 @@ _timed_wait_for()
timeout=yes
QEMU_STATUS[$h]=0
- while IFS= read -t ${QEMU_COMM_TIMEOUT} resp <&${QEMU_OUT[$h]}
+ read_timeout="-t ${QEMU_COMM_TIMEOUT}"
+ if [ -n "${GDB_OPTIONS}" ]; then
+ read_timeout=
+ fi
+
+ while IFS= read ${read_timeout} resp <&${QEMU_OUT[$h]}
do
if [ -n "$capture_events" ]; then
capture=0
diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index 609d82de89..d8582454de 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -166,8 +166,14 @@ _qemu_wrapper()
if [ -n "${QEMU_NEED_PID}" ]; then
echo $BASHPID > "${QEMU_TEST_DIR}/qemu-${_QEMU_HANDLE}.pid"
fi
+
+ GDB=""
+ if [ -n "${GDB_OPTIONS}" ]; then
+ GDB="gdbserver ${GDB_OPTIONS}"
+ fi
+
VALGRIND_QEMU="${VALGRIND_QEMU_VM}" _qemu_proc_exec "${VALGRIND_LOGFILE}" \
- "$QEMU_PROG" $QEMU_OPTIONS "$@"
+ $GDB "$QEMU_PROG" $QEMU_OPTIONS "$@"
)
RETVAL=$?
_qemu_proc_valgrind_log "${VALGRIND_LOGFILE}" $RETVAL
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 09/56] docs/devel/testing: add -gdb option to the debugging section of QEMU iotests
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (7 preceding siblings ...)
2021-09-01 15:15 ` [PULL 08/56] qemu-iotests: add gdbserver option to script tests too Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 10/56] qemu-iotests: extend the check script to prepare supporting valgrind for python tests Hanna Reitz
` (48 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-10-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
docs/devel/testing.rst | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst
index 8359f2ae37..01e1919873 100644
--- a/docs/devel/testing.rst
+++ b/docs/devel/testing.rst
@@ -229,6 +229,17 @@ Debugging a test case
The following options to the ``check`` script can be useful when debugging
a failing test:
+* ``-gdb`` wraps every QEMU invocation in a ``gdbserver``, which waits for a
+ connection from a gdb client. The options given to ``gdbserver`` (e.g. the
+ address on which to listen for connections) are taken from the ``$GDB_OPTIONS``
+ environment variable. By default (if ``$GDB_OPTIONS`` is empty), it listens on
+ ``localhost:12345``.
+ It is possible to connect to it for example with
+ ``gdb -iex "target remote $addr"``, where ``$addr`` is the address
+ ``gdbserver`` listens on.
+ If the ``-gdb`` option is not used, ``$GDB_OPTIONS`` is ignored,
+ regardless of whether it is set or not.
+
* ``-d`` (debug) just increases the logging verbosity, showing
for example the QMP commands and answers.
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 10/56] qemu-iotests: extend the check script to prepare supporting valgrind for python tests
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (8 preceding siblings ...)
2021-09-01 15:15 ` [PULL 09/56] docs/devel/testing: add -gdb option to the debugging section of QEMU iotests Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 11/56] qemu-iotests: extend QMP socket timeout when using valgrind Hanna Reitz
` (47 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Currently, the check script only parses the option and sets the
VALGRIND_QEMU environmental variable to "y".
Add another local python variable that prepares the command line,
identical to the one provided in the test scripts.
Because the python script does not know in advance the valgrind
PID to assign to the log file name, use the "%p" flag in valgrind
log file name that automatically puts the process PID at runtime.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210809090114.64834-11-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/check | 7 ++++---
tests/qemu-iotests/iotests.py | 11 +++++++++++
tests/qemu-iotests/testenv.py | 1 +
3 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
index 4365bb8066..ebd27946db 100755
--- a/tests/qemu-iotests/check
+++ b/tests/qemu-iotests/check
@@ -39,6 +39,10 @@ def make_argparser() -> argparse.ArgumentParser:
p.add_argument('-gdb', action='store_true',
help="start gdbserver with $GDB_OPTIONS options \
('localhost:12345' if $GDB_OPTIONS is empty)")
+ p.add_argument('-valgrind', action='store_true',
+ help='use valgrind, sets VALGRIND_QEMU environment '
+ 'variable')
+
p.add_argument('-misalign', action='store_true',
help='misalign memory allocations')
p.add_argument('--color', choices=['on', 'off', 'auto'],
@@ -88,9 +92,6 @@ def make_argparser() -> argparse.ArgumentParser:
g_bash.add_argument('-o', dest='imgopts',
help='options to pass to qemu-img create/convert, '
'sets IMGOPTS environment variable')
- g_bash.add_argument('-valgrind', action='store_true',
- help='use valgrind, sets VALGRIND_QEMU environment '
- 'variable')
g_sel = p.add_argument_group('test selecting options',
'The following options specify test set '
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index e7e3d92d3e..6aa1dc48ba 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -96,6 +96,17 @@
sys.stderr.write('Please run this test via the "check" script\n')
sys.exit(os.EX_USAGE)
+qemu_valgrind = []
+if os.environ.get('VALGRIND_QEMU') == "y" and \
+ os.environ.get('NO_VALGRIND') != "y":
+ valgrind_logfile = "--log-file=" + test_dir
+ # %p allows to put the valgrind process PID, since
+ # we don't know it a priori (subprocess.Popen is
+ # not yet invoked)
+ valgrind_logfile += "/%p.valgrind"
+
+ qemu_valgrind = ['valgrind', valgrind_logfile, '--error-exitcode=99']
+
socket_scm_helper = os.environ.get('SOCKET_SCM_HELPER', 'socket_scm_helper')
luks_default_secret_object = 'secret,id=keysec0,data=' + \
diff --git a/tests/qemu-iotests/testenv.py b/tests/qemu-iotests/testenv.py
index 8501c6caf5..8bf154376f 100644
--- a/tests/qemu-iotests/testenv.py
+++ b/tests/qemu-iotests/testenv.py
@@ -298,6 +298,7 @@ def print_env(self) -> None:
SOCK_DIR -- {SOCK_DIR}
SOCKET_SCM_HELPER -- {SOCKET_SCM_HELPER}
GDB_OPTIONS -- {GDB_OPTIONS}
+VALGRIND_QEMU -- {VALGRIND_QEMU}
"""
args = collections.defaultdict(str, self.get_env())
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 11/56] qemu-iotests: extend QMP socket timeout when using valgrind
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (9 preceding siblings ...)
2021-09-01 15:15 ` [PULL 10/56] qemu-iotests: extend the check script to prepare supporting valgrind for python tests Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 12/56] qemu-iotests: allow valgrind to read/delete the generated log file Hanna Reitz
` (46 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
As with gdbserver, valgrind delays the test execution, so
the default QMP socket timeout and the generic class
Timeout in iotests.py timeouts too soon.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-12-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/iotests.py | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 6aa1dc48ba..26c580f9e7 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -488,13 +488,13 @@ def __init__(self, seconds, errmsg="Timeout"):
self.seconds = seconds
self.errmsg = errmsg
def __enter__(self):
- if qemu_gdb:
+ if qemu_gdb or qemu_valgrind:
return self
signal.signal(signal.SIGALRM, self.timeout)
signal.setitimer(signal.ITIMER_REAL, self.seconds)
return self
def __exit__(self, exc_type, value, traceback):
- if qemu_gdb:
+ if qemu_gdb or qemu_valgrind:
return False
signal.setitimer(signal.ITIMER_REAL, 0)
return False
@@ -590,7 +590,7 @@ class VM(qtest.QEMUQtestMachine):
def __init__(self, path_suffix=''):
name = "qemu%s-%d" % (path_suffix, os.getpid())
- timer = 15.0 if not qemu_gdb else None
+ timer = 15.0 if not (qemu_gdb or qemu_valgrind) else None
super().__init__(qemu_prog, qemu_opts, wrapper=qemu_gdb,
name=name,
base_temp_dir=test_dir,
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 12/56] qemu-iotests: allow valgrind to read/delete the generated log file
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (10 preceding siblings ...)
2021-09-01 15:15 ` [PULL 11/56] qemu-iotests: extend QMP socket timeout when using valgrind Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 13/56] qemu-iotests: insert valgrind command line as wrapper for qemu binary Hanna Reitz
` (45 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
When using -valgrind on the script tests, it generates a log file
in $TEST_DIR that is either read (if valgrind finds problems) or
otherwise deleted. Provide the same exact behavior when using
-valgrind on the python tests.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-13-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/iotests.py | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 26c580f9e7..85d8c0abbb 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -598,6 +598,17 @@ def __init__(self, path_suffix=''):
sock_dir=sock_dir, qmp_timer=timer)
self._num_drives = 0
+ def _post_shutdown(self) -> None:
+ super()._post_shutdown()
+ if not qemu_valgrind or not self._popen:
+ return
+ valgrind_filename = f"{test_dir}/{self._popen.pid}.valgrind"
+ if self.exitcode() == 99:
+ with open(valgrind_filename) as f:
+ print(f.read())
+ else:
+ os.remove(valgrind_filename)
+
def add_object(self, opts):
self._args.append('-object')
self._args.append(opts)
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 13/56] qemu-iotests: insert valgrind command line as wrapper for qemu binary
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (11 preceding siblings ...)
2021-09-01 15:15 ` [PULL 12/56] qemu-iotests: allow valgrind to read/delete the generated log file Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 14/56] docs/devel/testing: add -valgrind option to the debug section of QEMU iotests Hanna Reitz
` (44 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
If -gdb and -valgrind are both defined, return an error.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-14-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/iotests.py | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 85d8c0abbb..74fa56840d 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -591,7 +591,11 @@ class VM(qtest.QEMUQtestMachine):
def __init__(self, path_suffix=''):
name = "qemu%s-%d" % (path_suffix, os.getpid())
timer = 15.0 if not (qemu_gdb or qemu_valgrind) else None
- super().__init__(qemu_prog, qemu_opts, wrapper=qemu_gdb,
+ if qemu_gdb and qemu_valgrind:
+ sys.stderr.write('gdb and valgrind are mutually exclusive\n')
+ sys.exit(1)
+ wrapper = qemu_gdb if qemu_gdb else qemu_valgrind
+ super().__init__(qemu_prog, qemu_opts, wrapper=wrapper,
name=name,
base_temp_dir=test_dir,
socket_scm_helper=socket_scm_helper,
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 14/56] docs/devel/testing: add -valgrind option to the debug section of QEMU iotests
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (12 preceding siblings ...)
2021-09-01 15:15 ` [PULL 13/56] qemu-iotests: insert valgrind command line as wrapper for qemu binary Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 15/56] qemu-iotests: add option to show qemu binary logs on stdout Hanna Reitz
` (43 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210809090114.64834-15-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
docs/devel/testing.rst | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst
index 01e1919873..8ebcf85a31 100644
--- a/docs/devel/testing.rst
+++ b/docs/devel/testing.rst
@@ -240,6 +240,12 @@ a failing test:
If the ``-gdb`` option is not used, ``$GDB_OPTIONS`` is ignored,
regardless of whether it is set or not.
+* ``-valgrind`` attaches a valgrind instance to QEMU. If it detects
+ warnings, it will print and save the log in
+ ``$TEST_DIR/<valgrind_pid>.valgrind``.
+ The final command line will be ``valgrind --log-file=$TEST_DIR/
+ <valgrind_pid>.valgrind --error-exitcode=99 $QEMU ...``
+
* ``-d`` (debug) just increases the logging verbosity, showing
for example the QMP commands and answers.
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 15/56] qemu-iotests: add option to show qemu binary logs on stdout
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (13 preceding siblings ...)
2021-09-01 15:15 ` [PULL 14/56] docs/devel/testing: add -valgrind option to the debug section of QEMU iotests Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 16/56] docs/devel/testing: add -p option to the debug section of QEMU iotests Hanna Reitz
` (42 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Using the flag -p, allow the qemu binary to print to stdout.
Also create the common function _close_qemu_log_file() to
avoid accessing machine.py private fields directly and have
duplicate code.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-16-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
python/qemu/machine/machine.py | 9 ++++++---
tests/qemu-iotests/check | 4 +++-
tests/qemu-iotests/iotests.py | 8 ++++++++
tests/qemu-iotests/testenv.py | 9 +++++++--
4 files changed, 24 insertions(+), 6 deletions(-)
diff --git a/python/qemu/machine/machine.py b/python/qemu/machine/machine.py
index 14c4d17eca..8b935813e9 100644
--- a/python/qemu/machine/machine.py
+++ b/python/qemu/machine/machine.py
@@ -348,6 +348,11 @@ def _post_launch(self) -> None:
if self._qmp_connection:
self._qmp.accept(self._qmp_timer)
+ def _close_qemu_log_file(self) -> None:
+ if self._qemu_log_file is not None:
+ self._qemu_log_file.close()
+ self._qemu_log_file = None
+
def _post_shutdown(self) -> None:
"""
Called to cleanup the VM instance after the process has exited.
@@ -360,9 +365,7 @@ def _post_shutdown(self) -> None:
self._qmp.close()
self._qmp_connection = None
- if self._qemu_log_file is not None:
- self._qemu_log_file.close()
- self._qemu_log_file = None
+ self._close_qemu_log_file()
self._load_io_log()
diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
index ebd27946db..da1bfb839e 100755
--- a/tests/qemu-iotests/check
+++ b/tests/qemu-iotests/check
@@ -36,6 +36,8 @@ def make_argparser() -> argparse.ArgumentParser:
help='pretty print output for make check')
p.add_argument('-d', dest='debug', action='store_true', help='debug')
+ p.add_argument('-p', dest='print', action='store_true',
+ help='redirects qemu\'s stdout and stderr to the test output')
p.add_argument('-gdb', action='store_true',
help="start gdbserver with $GDB_OPTIONS options \
('localhost:12345' if $GDB_OPTIONS is empty)")
@@ -119,7 +121,7 @@ if __name__ == '__main__':
aiomode=args.aiomode, cachemode=args.cachemode,
imgopts=args.imgopts, misalign=args.misalign,
debug=args.debug, valgrind=args.valgrind,
- gdb=args.gdb)
+ gdb=args.gdb, qprint=args.print)
if len(sys.argv) > 1 and sys.argv[-len(args.tests)-1] == '--':
if not args.tests:
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 74fa56840d..2cf5ff965b 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -79,6 +79,8 @@
if gdb_qemu_env:
qemu_gdb = ['gdbserver'] + gdb_qemu_env.strip().split(' ')
+qemu_print = os.environ.get('PRINT_QEMU', False)
+
imgfmt = os.environ.get('IMGFMT', 'raw')
imgproto = os.environ.get('IMGPROTO', 'file')
output_dir = os.environ.get('OUTPUT_DIR', '.')
@@ -613,6 +615,12 @@ def _post_shutdown(self) -> None:
else:
os.remove(valgrind_filename)
+ def _pre_launch(self) -> None:
+ super()._pre_launch()
+ if qemu_print:
+ # set QEMU binary output to stdout
+ self._close_qemu_log_file()
+
def add_object(self, opts):
self._args.append('-object')
self._args.append(opts)
diff --git a/tests/qemu-iotests/testenv.py b/tests/qemu-iotests/testenv.py
index 8bf154376f..70da0d60c8 100644
--- a/tests/qemu-iotests/testenv.py
+++ b/tests/qemu-iotests/testenv.py
@@ -74,7 +74,7 @@ class TestEnv(ContextManager['TestEnv']):
'AIOMODE', 'CACHEMODE', 'VALGRIND_QEMU',
'CACHEMODE_IS_DEFAULT', 'IMGFMT_GENERIC', 'IMGOPTSSYNTAX',
'IMGKEYSECRET', 'QEMU_DEFAULT_MACHINE', 'MALLOC_PERTURB_',
- 'GDB_OPTIONS']
+ 'GDB_OPTIONS', 'PRINT_QEMU']
def prepare_subprocess(self, args: List[str]) -> Dict[str, str]:
if self.debug:
@@ -181,7 +181,8 @@ def __init__(self, imgfmt: str, imgproto: str, aiomode: str,
misalign: bool = False,
debug: bool = False,
valgrind: bool = False,
- gdb: bool = False) -> None:
+ gdb: bool = False,
+ qprint: bool = False) -> None:
self.imgfmt = imgfmt
self.imgproto = imgproto
self.aiomode = aiomode
@@ -189,6 +190,9 @@ def __init__(self, imgfmt: str, imgproto: str, aiomode: str,
self.misalign = misalign
self.debug = debug
+ if qprint:
+ self.print_qemu = 'y'
+
if gdb:
self.gdb_options = os.getenv('GDB_OPTIONS', DEF_GDB_OPTIONS)
if not self.gdb_options:
@@ -299,6 +303,7 @@ def print_env(self) -> None:
SOCKET_SCM_HELPER -- {SOCKET_SCM_HELPER}
GDB_OPTIONS -- {GDB_OPTIONS}
VALGRIND_QEMU -- {VALGRIND_QEMU}
+PRINT_QEMU_OUTPUT -- {PRINT_QEMU}
"""
args = collections.defaultdict(str, self.get_env())
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 16/56] docs/devel/testing: add -p option to the debug section of QEMU iotests
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (14 preceding siblings ...)
2021-09-01 15:15 ` [PULL 15/56] qemu-iotests: add option to show qemu binary logs on stdout Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 17/56] block/monitor: Consolidate hmp_handle_error calls to reduce redundant code Hanna Reitz
` (41 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210809090114.64834-17-eesposit@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
docs/devel/testing.rst | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst
index 8ebcf85a31..4a0abbf23d 100644
--- a/docs/devel/testing.rst
+++ b/docs/devel/testing.rst
@@ -249,6 +249,10 @@ a failing test:
* ``-d`` (debug) just increases the logging verbosity, showing
for example the QMP commands and answers.
+* ``-p`` (print) redirects QEMU’s stdout and stderr to the test output,
+ instead of saving it into a log file in
+ ``$TEST_DIR/qemu-machine-<random_string>``.
+
Test case groups
----------------
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 17/56] block/monitor: Consolidate hmp_handle_error calls to reduce redundant code
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (15 preceding siblings ...)
2021-09-01 15:15 ` [PULL 16/56] docs/devel/testing: add -p option to the debug section of QEMU iotests Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 18/56] raw-format: drop WRITE and RESIZE child perms when possible Hanna Reitz
` (40 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Message-Id: <20210802062507.347555-1-maozhongyi@cmss.chinamobile.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/monitor/block-hmp-cmds.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/block/monitor/block-hmp-cmds.c b/block/monitor/block-hmp-cmds.c
index 3e6670c963..2ac4aedfff 100644
--- a/block/monitor/block-hmp-cmds.c
+++ b/block/monitor/block-hmp-cmds.c
@@ -251,10 +251,10 @@ void hmp_drive_mirror(Monitor *mon, const QDict *qdict)
if (!filename) {
error_setg(&err, QERR_MISSING_PARAMETER, "target");
- hmp_handle_error(mon, err);
- return;
+ goto end;
}
qmp_drive_mirror(&mirror, &err);
+end:
hmp_handle_error(mon, err);
}
@@ -281,11 +281,11 @@ void hmp_drive_backup(Monitor *mon, const QDict *qdict)
if (!filename) {
error_setg(&err, QERR_MISSING_PARAMETER, "target");
- hmp_handle_error(mon, err);
- return;
+ goto end;
}
qmp_drive_backup(&backup, &err);
+end:
hmp_handle_error(mon, err);
}
@@ -356,8 +356,7 @@ void hmp_snapshot_blkdev(Monitor *mon, const QDict *qdict)
* will be taken internally. Today it's actually required.
*/
error_setg(&err, QERR_MISSING_PARAMETER, "snapshot-file");
- hmp_handle_error(mon, err);
- return;
+ goto end;
}
mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS;
@@ -365,6 +364,7 @@ void hmp_snapshot_blkdev(Monitor *mon, const QDict *qdict)
filename, false, NULL,
!!format, format,
true, mode, &err);
+end:
hmp_handle_error(mon, err);
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 18/56] raw-format: drop WRITE and RESIZE child perms when possible
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (16 preceding siblings ...)
2021-09-01 15:15 ` [PULL 17/56] block/monitor: Consolidate hmp_handle_error calls to reduce redundant code Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 19/56] iotests: use with-statement for open() calls Hanna Reitz
` (39 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Stefan Hajnoczi <stefanha@redhat.com>
The following command-line fails due to a permissions conflict:
$ qemu-storage-daemon \
--blockdev driver=nvme,node-name=nvme0,device=0000:08:00.0,namespace=1 \
--blockdev driver=raw,node-name=l1-1,file=nvme0,offset=0,size=1073741824 \
--blockdev driver=raw,node-name=l1-2,file=nvme0,offset=1073741824,size=1073741824 \
--nbd-server addr.type=unix,addr.path=/tmp/nbd.sock,max-connections=2 \
--export type=nbd,id=nbd-l1-1,node-name=l1-1,name=l1-1,writable=on \
--export type=nbd,id=nbd-l1-2,node-name=l1-2,name=l1-2,writable=on
qemu-storage-daemon: --export type=nbd,id=nbd-l1-1,node-name=l1-1,name=l1-1,writable=on: Permission conflict on node 'nvme0': permissions 'resize' are both required by node 'l1-1' (uses node 'nvme0' as 'file' child) and unshared by node 'l1-2' (uses node 'nvme0' as 'file' child).
The problem is that block/raw-format.c relies on bdrv_default_perms() to
set permissions on the nvme node. The default permissions add RESIZE in
anticipation of a format driver like qcow2 that needs to grow the image
file. This fails because RESIZE is unshared, so we cannot get the RESIZE
permission.
Max Reitz pointed out that block/crypto.c already handles this case by
implementing a custom ->bdrv_child_perm() function that adjusts the
result of bdrv_default_perms().
This patch takes the same approach in block/raw-format.c so that RESIZE
is only required if it's actually necessary (e.g. the parent is qcow2).
Cc: Max Reitz <mreitz@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20210726122839.822900-1-stefanha@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/raw-format.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/block/raw-format.c b/block/raw-format.c
index 7717578ed6..c26f493688 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -580,6 +580,25 @@ static void raw_cancel_in_flight(BlockDriverState *bs)
bdrv_cancel_in_flight(bs->file->bs);
}
+static void raw_child_perm(BlockDriverState *bs, BdrvChild *c,
+ BdrvChildRole role,
+ BlockReopenQueue *reopen_queue,
+ uint64_t parent_perm, uint64_t parent_shared,
+ uint64_t *nperm, uint64_t *nshared)
+{
+ bdrv_default_perms(bs, c, role, reopen_queue, parent_perm,
+ parent_shared, nperm, nshared);
+
+ /*
+ * bdrv_default_perms() may add WRITE and/or RESIZE (see comment in
+ * bdrv_default_perms_for_storage() for an explanation) but we only need
+ * them if they are in parent_perm. Drop WRITE and RESIZE whenever possible
+ * to avoid permission conflicts.
+ */
+ *nperm &= ~(BLK_PERM_WRITE | BLK_PERM_RESIZE);
+ *nperm |= parent_perm & (BLK_PERM_WRITE | BLK_PERM_RESIZE);
+}
+
BlockDriver bdrv_raw = {
.format_name = "raw",
.instance_size = sizeof(BDRVRawState),
@@ -588,7 +607,7 @@ BlockDriver bdrv_raw = {
.bdrv_reopen_commit = &raw_reopen_commit,
.bdrv_reopen_abort = &raw_reopen_abort,
.bdrv_open = &raw_open,
- .bdrv_child_perm = bdrv_default_perms,
+ .bdrv_child_perm = raw_child_perm,
.bdrv_co_create_opts = &raw_co_create_opts,
.bdrv_co_preadv = &raw_co_preadv,
.bdrv_co_pwritev = &raw_co_pwritev,
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 19/56] iotests: use with-statement for open() calls
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (17 preceding siblings ...)
2021-09-01 15:15 ` [PULL 18/56] raw-format: drop WRITE and RESIZE child perms when possible Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 20/56] iotests: use subprocess.DEVNULL instead of open("/dev/null") Hanna Reitz
` (38 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: John Snow <jsnow@redhat.com>
Silences a new pylint warning. The dangers of *not* doing this are
somewhat unclear; I believe the file object gets garbage collected
eventually, but possibly the way in which it happens is
non-deterministic. Maybe this is a valid warning, but if there are
consequences of not doing it, I am not aware of them at present.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210720173336.1876937-2-jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/iotests.py | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 2cf5ff965b..2ad7a15c8b 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -1120,7 +1120,8 @@ def notrun(reason):
# Each test in qemu-iotests has a number ("seq")
seq = os.path.basename(sys.argv[0])
- open('%s/%s.notrun' % (output_dir, seq), 'w').write(reason + '\n')
+ with open('%s/%s.notrun' % (output_dir, seq), 'w') as outfile:
+ outfile.write(reason + '\n')
logger.warning("%s not run: %s", seq, reason)
sys.exit(0)
@@ -1133,8 +1134,8 @@ def case_notrun(reason):
# Each test in qemu-iotests has a number ("seq")
seq = os.path.basename(sys.argv[0])
- open('%s/%s.casenotrun' % (output_dir, seq), 'a').write(
- ' [case not run] ' + reason + '\n')
+ with open('%s/%s.casenotrun' % (output_dir, seq), 'a') as outfile:
+ outfile.write(' [case not run] ' + reason + '\n')
def _verify_image_format(supported_fmts: Sequence[str] = (),
unsupported_fmts: Sequence[str] = ()) -> None:
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 20/56] iotests: use subprocess.DEVNULL instead of open("/dev/null")
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (18 preceding siblings ...)
2021-09-01 15:15 ` [PULL 19/56] iotests: use with-statement for open() calls Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 21/56] block: introduce bdrv_replace_child_bs() Hanna Reitz
` (37 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: John Snow <jsnow@redhat.com>
Avoids a warning from pylint not to use open() outside of a
with-statement, and is ... probably more portable anyway. Not that I
think we care too much about running tests *on* Windows, but... eh.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210720173336.1876937-3-jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/iotests.py | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 2ad7a15c8b..4c8971d946 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -237,18 +237,18 @@ def qemu_io_silent(*args):
default_args = qemu_io_args
args = default_args + list(args)
- exitcode = subprocess.call(args, stdout=open('/dev/null', 'w'))
- if exitcode < 0:
+ result = subprocess.run(args, stdout=subprocess.DEVNULL, check=False)
+ if result.returncode < 0:
sys.stderr.write('qemu-io received signal %i: %s\n' %
- (-exitcode, ' '.join(args)))
- return exitcode
+ (-result.returncode, ' '.join(args)))
+ return result.returncode
def qemu_io_silent_check(*args):
'''Run qemu-io and return the true if subprocess returned 0'''
args = qemu_io_args + list(args)
- exitcode = subprocess.call(args, stdout=open('/dev/null', 'w'),
- stderr=subprocess.STDOUT)
- return exitcode == 0
+ result = subprocess.run(args, stdout=subprocess.DEVNULL,
+ stderr=subprocess.STDOUT, check=False)
+ return result.returncode == 0
class QemuIoInteractive:
def __init__(self, *args):
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 21/56] block: introduce bdrv_replace_child_bs()
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (19 preceding siblings ...)
2021-09-01 15:15 ` [PULL 20/56] iotests: use subprocess.DEVNULL instead of open("/dev/null") Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 22/56] block: introduce blk_replace_bs Hanna Reitz
` (36 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Add function to transactionally replace bs inside BdrvChild.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-2-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
include/block/block.h | 2 ++
block.c | 31 +++++++++++++++++++++++++++++++
2 files changed, 33 insertions(+)
diff --git a/include/block/block.h b/include/block/block.h
index 3477290f9a..740038a892 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -361,6 +361,8 @@ int bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top,
Error **errp);
int bdrv_replace_node(BlockDriverState *from, BlockDriverState *to,
Error **errp);
+int bdrv_replace_child_bs(BdrvChild *child, BlockDriverState *new_bs,
+ Error **errp);
BlockDriverState *bdrv_insert_node(BlockDriverState *bs, QDict *node_options,
int flags, Error **errp);
int bdrv_drop_filter(BlockDriverState *bs, Error **errp);
diff --git a/block.c b/block.c
index e97ce0b1c8..b2b66263f9 100644
--- a/block.c
+++ b/block.c
@@ -5048,6 +5048,37 @@ out:
return ret;
}
+/* Not for empty child */
+int bdrv_replace_child_bs(BdrvChild *child, BlockDriverState *new_bs,
+ Error **errp)
+{
+ int ret;
+ Transaction *tran = tran_new();
+ g_autoptr(GHashTable) found = NULL;
+ g_autoptr(GSList) refresh_list = NULL;
+ BlockDriverState *old_bs = child->bs;
+
+ bdrv_ref(old_bs);
+ bdrv_drained_begin(old_bs);
+ bdrv_drained_begin(new_bs);
+
+ bdrv_replace_child_tran(child, new_bs, tran);
+
+ found = g_hash_table_new(NULL, NULL);
+ refresh_list = bdrv_topological_dfs(refresh_list, found, old_bs);
+ refresh_list = bdrv_topological_dfs(refresh_list, found, new_bs);
+
+ ret = bdrv_list_refresh_perms(refresh_list, NULL, tran, errp);
+
+ tran_finalize(tran, ret);
+
+ bdrv_drained_end(old_bs);
+ bdrv_drained_end(new_bs);
+ bdrv_unref(old_bs);
+
+ return ret;
+}
+
static void bdrv_delete(BlockDriverState *bs)
{
assert(bdrv_op_blocker_is_empty(bs));
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 22/56] block: introduce blk_replace_bs
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (20 preceding siblings ...)
2021-09-01 15:15 ` [PULL 21/56] block: introduce bdrv_replace_child_bs() Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 23/56] qdev-properties: PropertyInfo: add realized_set_allowed field Hanna Reitz
` (35 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Add function to change bs inside blk.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-3-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
include/sysemu/block-backend.h | 1 +
block/block-backend.c | 8 ++++++++
2 files changed, 9 insertions(+)
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 9ac5f7bbd3..29d4fdbf63 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -102,6 +102,7 @@ BlockBackend *blk_by_public(BlockBackendPublic *public);
BlockDriverState *blk_bs(BlockBackend *blk);
void blk_remove_bs(BlockBackend *blk);
int blk_insert_bs(BlockBackend *blk, BlockDriverState *bs, Error **errp);
+int blk_replace_bs(BlockBackend *blk, BlockDriverState *new_bs, Error **errp);
bool bdrv_has_blk(BlockDriverState *bs);
bool bdrv_is_root_node(BlockDriverState *bs);
int blk_set_perm(BlockBackend *blk, uint64_t perm, uint64_t shared_perm,
diff --git a/block/block-backend.c b/block/block-backend.c
index deb55c272e..6140d133e2 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -869,6 +869,14 @@ int blk_insert_bs(BlockBackend *blk, BlockDriverState *bs, Error **errp)
return 0;
}
+/*
+ * Change BlockDriverState associated with @blk.
+ */
+int blk_replace_bs(BlockBackend *blk, BlockDriverState *new_bs, Error **errp)
+{
+ return bdrv_replace_child_bs(blk->root, new_bs, errp);
+}
+
/*
* Sets the permission bitmasks that the user of the BlockBackend needs.
*/
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 23/56] qdev-properties: PropertyInfo: add realized_set_allowed field
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (21 preceding siblings ...)
2021-09-01 15:15 ` [PULL 22/56] block: introduce blk_replace_bs Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 24/56] qdev: allow setting drive property for realized device Hanna Reitz
` (34 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Add field, so property can declare support for setting the property
when device is realized. To be used in the following commit.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-4-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
include/hw/qdev-properties.h | 1 +
hw/core/qdev-properties.c | 6 +++---
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
index 0ef97d60ce..f7925f67d0 100644
--- a/include/hw/qdev-properties.h
+++ b/include/hw/qdev-properties.h
@@ -32,6 +32,7 @@ struct PropertyInfo {
const char *name;
const char *description;
const QEnumLookup *enum_table;
+ bool realized_set_allowed; /* allow setting property on realized device */
int (*print)(Object *obj, Property *prop, char *dest, size_t len);
void (*set_default_value)(ObjectProperty *op, const Property *prop);
ObjectProperty *(*create)(ObjectClass *oc, const char *name,
diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
index 50f40949f5..c34aac6ebc 100644
--- a/hw/core/qdev-properties.c
+++ b/hw/core/qdev-properties.c
@@ -26,11 +26,11 @@ void qdev_prop_set_after_realize(DeviceState *dev, const char *name,
/* returns: true if property is allowed to be set, false otherwise */
static bool qdev_prop_allow_set(Object *obj, const char *name,
- Error **errp)
+ const PropertyInfo *info, Error **errp)
{
DeviceState *dev = DEVICE(obj);
- if (dev->realized) {
+ if (dev->realized && !info->realized_set_allowed) {
qdev_prop_set_after_realize(dev, name, errp);
return false;
}
@@ -79,7 +79,7 @@ static void field_prop_set(Object *obj, Visitor *v, const char *name,
{
Property *prop = opaque;
- if (!qdev_prop_allow_set(obj, name, errp)) {
+ if (!qdev_prop_allow_set(obj, name, prop->info, errp)) {
return;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 24/56] qdev: allow setting drive property for realized device
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (22 preceding siblings ...)
2021-09-01 15:15 ` [PULL 23/56] qdev-properties: PropertyInfo: add realized_set_allowed field Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 25/56] block: rename backup-top to copy-before-write Hanna Reitz
` (33 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
We need an ability to insert filters above top block node, attached to
block device. It can't be achieved with blockdev-reopen command. So, we
want do it with help of qom-set.
Intended usage:
Assume there is a node A that is attached to some guest device.
1. blockdev-add to create a filter node B that has A as its child.
2. qom-set to change the node attached to the guest device’s
BlockBackend from A to B.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-5-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
hw/core/qdev-properties-system.c | 43 +++++++++++++++++++++++---------
1 file changed, 31 insertions(+), 12 deletions(-)
diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
index 2760c21f11..e71f5d64d1 100644
--- a/hw/core/qdev-properties-system.c
+++ b/hw/core/qdev-properties-system.c
@@ -36,11 +36,11 @@
static bool check_prop_still_unset(Object *obj, const char *name,
const void *old_val, const char *new_val,
- Error **errp)
+ bool allow_override, Error **errp)
{
const GlobalProperty *prop = qdev_find_global_prop(obj, name);
- if (!old_val) {
+ if (!old_val || (!prop && allow_override)) {
return true;
}
@@ -93,16 +93,34 @@ static void set_drive_helper(Object *obj, Visitor *v, const char *name,
BlockBackend *blk;
bool blk_created = false;
int ret;
+ BlockDriverState *bs;
+ AioContext *ctx;
if (!visit_type_str(v, name, &str, errp)) {
return;
}
- /*
- * TODO Should this really be an error? If no, the old value
- * needs to be released before we store the new one.
- */
- if (!check_prop_still_unset(obj, name, *ptr, str, errp)) {
+ if (!check_prop_still_unset(obj, name, *ptr, str, true, errp)) {
+ return;
+ }
+
+ if (*ptr) {
+ /* BlockBackend alread exists. So, we want to change attached node */
+ blk = *ptr;
+ ctx = blk_get_aio_context(blk);
+ bs = bdrv_lookup_bs(NULL, str, errp);
+ if (!bs) {
+ return;
+ }
+
+ if (ctx != bdrv_get_aio_context(bs)) {
+ error_setg(errp, "Different aio context is not supported for new "
+ "node");
+ }
+
+ aio_context_acquire(ctx);
+ blk_replace_bs(blk, bs, errp);
+ aio_context_release(ctx);
return;
}
@@ -114,7 +132,7 @@ static void set_drive_helper(Object *obj, Visitor *v, const char *name,
blk = blk_by_name(str);
if (!blk) {
- BlockDriverState *bs = bdrv_lookup_bs(NULL, str, NULL);
+ bs = bdrv_lookup_bs(NULL, str, NULL);
if (bs) {
/*
* If the device supports iothreads, it will make sure to move the
@@ -123,8 +141,7 @@ static void set_drive_helper(Object *obj, Visitor *v, const char *name,
* aware of iothreads require their BlockBackends to be in the main
* AioContext.
*/
- AioContext *ctx = iothread ? bdrv_get_aio_context(bs) :
- qemu_get_aio_context();
+ ctx = iothread ? bdrv_get_aio_context(bs) : qemu_get_aio_context();
blk = blk_new(ctx, 0, BLK_PERM_ALL);
blk_created = true;
@@ -196,6 +213,7 @@ static void release_drive(Object *obj, const char *name, void *opaque)
const PropertyInfo qdev_prop_drive = {
.name = "str",
.description = "Node name or ID of a block device to use as a backend",
+ .realized_set_allowed = true,
.get = get_drive,
.set = set_drive,
.release = release_drive,
@@ -204,6 +222,7 @@ const PropertyInfo qdev_prop_drive = {
const PropertyInfo qdev_prop_drive_iothread = {
.name = "str",
.description = "Node name or ID of a block device to use as a backend",
+ .realized_set_allowed = true,
.get = get_drive,
.set = set_drive_iothread,
.release = release_drive,
@@ -238,7 +257,7 @@ static void set_chr(Object *obj, Visitor *v, const char *name, void *opaque,
* TODO Should this really be an error? If no, the old value
* needs to be released before we store the new one.
*/
- if (!check_prop_still_unset(obj, name, be->chr, str, errp)) {
+ if (!check_prop_still_unset(obj, name, be->chr, str, false, errp)) {
return;
}
@@ -408,7 +427,7 @@ static void set_netdev(Object *obj, Visitor *v, const char *name,
* TODO Should this really be an error? If no, the old value
* needs to be released before we store the new one.
*/
- if (!check_prop_still_unset(obj, name, ncs[i], str, errp)) {
+ if (!check_prop_still_unset(obj, name, ncs[i], str, false, errp)) {
goto out;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 25/56] block: rename backup-top to copy-before-write
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (23 preceding siblings ...)
2021-09-01 15:15 ` [PULL 24/56] qdev: allow setting drive property for realized device Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 26/56] block-copy: move detecting fleecing scheme to block-copy Hanna Reitz
` (32 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
We are going to convert backup_top to full featured public filter,
which can be used in separate of backup job. Start from renaming from
"how it used" to "what it does".
While updating comments in 283 iotest, drop and rephrase also things
about ".active", as this field is now dropped, and filter doesn't have
"inactive" mode.
Note that this change may be considered as incompatible interface
change, as backup-top filter format name was visible through
query-block and query-named-block-nodes.
Still, consider the following reasoning:
1. backup-top was never documented, so if someone depends on format
name (for driver that can't be used other than it is automatically
inserted on backup job start), it's a kind of "undocumented feature
use". So I think we are free to change it.
2. There is a hope, that there is no such users: it's a lot more native
to give a good node-name to backup-top filter if need to operate
with it somehow, and don't touch format name.
3. Another "incompatible" change in further commit would be moving
copy-before-write filter from using backing child to file child. And
this is even more reasonable than renaming: for now all public
filters are file-child based.
So, it's a risky change, but risk seems small and good interface worth
it.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-6-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/{backup-top.h => copy-before-write.h} | 28 +++---
block/backup.c | 22 ++---
block/{backup-top.c => copy-before-write.c} | 100 ++++++++++----------
MAINTAINERS | 4 +-
block/meson.build | 2 +-
tests/qemu-iotests/283 | 35 +++----
tests/qemu-iotests/283.out | 4 +-
7 files changed, 95 insertions(+), 100 deletions(-)
rename block/{backup-top.h => copy-before-write.h} (56%)
rename block/{backup-top.c => copy-before-write.c} (62%)
diff --git a/block/backup-top.h b/block/copy-before-write.h
similarity index 56%
rename from block/backup-top.h
rename to block/copy-before-write.h
index b28b0031c4..5977b7aa31 100644
--- a/block/backup-top.h
+++ b/block/copy-before-write.h
@@ -1,10 +1,10 @@
/*
- * backup-top filter driver
+ * copy-before-write filter driver
*
* The driver performs Copy-Before-Write (CBW) operation: it is injected above
* some node, and before each write it copies _old_ data to the target node.
*
- * Copyright (c) 2018-2019 Virtuozzo International GmbH.
+ * Copyright (c) 2018-2021 Virtuozzo International GmbH.
*
* Author:
* Sementsov-Ogievskiy Vladimir <vsementsov@virtuozzo.com>
@@ -23,20 +23,20 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#ifndef BACKUP_TOP_H
-#define BACKUP_TOP_H
+#ifndef COPY_BEFORE_WRITE_H
+#define COPY_BEFORE_WRITE_H
#include "block/block_int.h"
#include "block/block-copy.h"
-BlockDriverState *bdrv_backup_top_append(BlockDriverState *source,
- BlockDriverState *target,
- const char *filter_node_name,
- uint64_t cluster_size,
- BackupPerf *perf,
- BdrvRequestFlags write_flags,
- BlockCopyState **bcs,
- Error **errp);
-void bdrv_backup_top_drop(BlockDriverState *bs);
+BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
+ BlockDriverState *target,
+ const char *filter_node_name,
+ uint64_t cluster_size,
+ BackupPerf *perf,
+ BdrvRequestFlags write_flags,
+ BlockCopyState **bcs,
+ Error **errp);
+void bdrv_cbw_drop(BlockDriverState *bs);
-#endif /* BACKUP_TOP_H */
+#endif /* COPY_BEFORE_WRITE_H */
diff --git a/block/backup.c b/block/backup.c
index bd3614ce70..ac91821b08 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -27,13 +27,13 @@
#include "qemu/bitmap.h"
#include "qemu/error-report.h"
-#include "block/backup-top.h"
+#include "block/copy-before-write.h"
#define BACKUP_CLUSTER_SIZE_DEFAULT (1 << 16)
typedef struct BackupBlockJob {
BlockJob common;
- BlockDriverState *backup_top;
+ BlockDriverState *cbw;
BlockDriverState *source_bs;
BlockDriverState *target_bs;
@@ -104,7 +104,7 @@ static void backup_clean(Job *job)
{
BackupBlockJob *s = container_of(job, BackupBlockJob, common.job);
block_job_remove_all_bdrv(&s->common);
- bdrv_backup_top_drop(s->backup_top);
+ bdrv_cbw_drop(s->cbw);
}
void backup_do_checkpoint(BlockJob *job, Error **errp)
@@ -408,7 +408,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
BackupBlockJob *job = NULL;
int64_t cluster_size;
BdrvRequestFlags write_flags;
- BlockDriverState *backup_top = NULL;
+ BlockDriverState *cbw = NULL;
BlockCopyState *bcs = NULL;
assert(bs);
@@ -521,22 +521,22 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
write_flags = (bdrv_chain_contains(target, bs) ? BDRV_REQ_SERIALISING : 0) |
(compress ? BDRV_REQ_WRITE_COMPRESSED : 0),
- backup_top = bdrv_backup_top_append(bs, target, filter_node_name,
+ cbw = bdrv_cbw_append(bs, target, filter_node_name,
cluster_size, perf,
write_flags, &bcs, errp);
- if (!backup_top) {
+ if (!cbw) {
goto error;
}
/* job->len is fixed, so we can't allow resize */
- job = block_job_create(job_id, &backup_job_driver, txn, backup_top,
+ job = block_job_create(job_id, &backup_job_driver, txn, cbw,
0, BLK_PERM_ALL,
speed, creation_flags, cb, opaque, errp);
if (!job) {
goto error;
}
- job->backup_top = backup_top;
+ job->cbw = cbw;
job->source_bs = bs;
job->target_bs = target;
job->on_source_error = on_source_error;
@@ -552,7 +552,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
block_copy_set_progress_meter(bcs, &job->common.job.progress);
block_copy_set_speed(bcs, speed);
- /* Required permissions are already taken by backup-top target */
+ /* Required permissions are taken by copy-before-write filter target */
block_job_add_bdrv(&job->common, "target", target, 0, BLK_PERM_ALL,
&error_abort);
@@ -562,8 +562,8 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
if (sync_bitmap) {
bdrv_reclaim_dirty_bitmap(sync_bitmap, NULL);
}
- if (backup_top) {
- bdrv_backup_top_drop(backup_top);
+ if (cbw) {
+ bdrv_cbw_drop(cbw);
}
return NULL;
diff --git a/block/backup-top.c b/block/copy-before-write.c
similarity index 62%
rename from block/backup-top.c
rename to block/copy-before-write.c
index 425e3778be..0dc5a107cf 100644
--- a/block/backup-top.c
+++ b/block/copy-before-write.c
@@ -1,10 +1,10 @@
/*
- * backup-top filter driver
+ * copy-before-write filter driver
*
* The driver performs Copy-Before-Write (CBW) operation: it is injected above
* some node, and before each write it copies _old_ data to the target node.
*
- * Copyright (c) 2018-2019 Virtuozzo International GmbH.
+ * Copyright (c) 2018-2021 Virtuozzo International GmbH.
*
* Author:
* Sementsov-Ogievskiy Vladimir <vsementsov@virtuozzo.com>
@@ -32,25 +32,25 @@
#include "block/qdict.h"
#include "block/block-copy.h"
-#include "block/backup-top.h"
+#include "block/copy-before-write.h"
-typedef struct BDRVBackupTopState {
+typedef struct BDRVCopyBeforeWriteState {
BlockCopyState *bcs;
BdrvChild *target;
int64_t cluster_size;
-} BDRVBackupTopState;
+} BDRVCopyBeforeWriteState;
-static coroutine_fn int backup_top_co_preadv(
+static coroutine_fn int cbw_co_preadv(
BlockDriverState *bs, uint64_t offset, uint64_t bytes,
QEMUIOVector *qiov, int flags)
{
return bdrv_co_preadv(bs->backing, offset, bytes, qiov, flags);
}
-static coroutine_fn int backup_top_cbw(BlockDriverState *bs, uint64_t offset,
- uint64_t bytes, BdrvRequestFlags flags)
+static coroutine_fn int cbw_do_copy_before_write(BlockDriverState *bs,
+ uint64_t offset, uint64_t bytes, BdrvRequestFlags flags)
{
- BDRVBackupTopState *s = bs->opaque;
+ BDRVCopyBeforeWriteState *s = bs->opaque;
uint64_t off, end;
if (flags & BDRV_REQ_WRITE_UNCHANGED) {
@@ -63,10 +63,10 @@ static coroutine_fn int backup_top_cbw(BlockDriverState *bs, uint64_t offset,
return block_copy(s->bcs, off, end - off, true);
}
-static int coroutine_fn backup_top_co_pdiscard(BlockDriverState *bs,
- int64_t offset, int bytes)
+static int coroutine_fn cbw_co_pdiscard(BlockDriverState *bs,
+ int64_t offset, int bytes)
{
- int ret = backup_top_cbw(bs, offset, bytes, 0);
+ int ret = cbw_do_copy_before_write(bs, offset, bytes, 0);
if (ret < 0) {
return ret;
}
@@ -74,10 +74,10 @@ static int coroutine_fn backup_top_co_pdiscard(BlockDriverState *bs,
return bdrv_co_pdiscard(bs->backing, offset, bytes);
}
-static int coroutine_fn backup_top_co_pwrite_zeroes(BlockDriverState *bs,
+static int coroutine_fn cbw_co_pwrite_zeroes(BlockDriverState *bs,
int64_t offset, int bytes, BdrvRequestFlags flags)
{
- int ret = backup_top_cbw(bs, offset, bytes, flags);
+ int ret = cbw_do_copy_before_write(bs, offset, bytes, flags);
if (ret < 0) {
return ret;
}
@@ -85,12 +85,12 @@ static int coroutine_fn backup_top_co_pwrite_zeroes(BlockDriverState *bs,
return bdrv_co_pwrite_zeroes(bs->backing, offset, bytes, flags);
}
-static coroutine_fn int backup_top_co_pwritev(BlockDriverState *bs,
- uint64_t offset,
- uint64_t bytes,
- QEMUIOVector *qiov, int flags)
+static coroutine_fn int cbw_co_pwritev(BlockDriverState *bs,
+ uint64_t offset,
+ uint64_t bytes,
+ QEMUIOVector *qiov, int flags)
{
- int ret = backup_top_cbw(bs, offset, bytes, flags);
+ int ret = cbw_do_copy_before_write(bs, offset, bytes, flags);
if (ret < 0) {
return ret;
}
@@ -98,7 +98,7 @@ static coroutine_fn int backup_top_co_pwritev(BlockDriverState *bs,
return bdrv_co_pwritev(bs->backing, offset, bytes, qiov, flags);
}
-static int coroutine_fn backup_top_co_flush(BlockDriverState *bs)
+static int coroutine_fn cbw_co_flush(BlockDriverState *bs)
{
if (!bs->backing) {
return 0;
@@ -107,7 +107,7 @@ static int coroutine_fn backup_top_co_flush(BlockDriverState *bs)
return bdrv_co_flush(bs->backing->bs);
}
-static void backup_top_refresh_filename(BlockDriverState *bs)
+static void cbw_refresh_filename(BlockDriverState *bs)
{
if (bs->backing == NULL) {
/*
@@ -120,11 +120,11 @@ static void backup_top_refresh_filename(BlockDriverState *bs)
bs->backing->bs->filename);
}
-static void backup_top_child_perm(BlockDriverState *bs, BdrvChild *c,
- BdrvChildRole role,
- BlockReopenQueue *reopen_queue,
- uint64_t perm, uint64_t shared,
- uint64_t *nperm, uint64_t *nshared)
+static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c,
+ BdrvChildRole role,
+ BlockReopenQueue *reopen_queue,
+ uint64_t perm, uint64_t shared,
+ uint64_t *nperm, uint64_t *nshared)
{
if (!(role & BDRV_CHILD_FILTERED)) {
/*
@@ -149,41 +149,41 @@ static void backup_top_child_perm(BlockDriverState *bs, BdrvChild *c,
}
}
-BlockDriver bdrv_backup_top_filter = {
- .format_name = "backup-top",
- .instance_size = sizeof(BDRVBackupTopState),
+BlockDriver bdrv_cbw_filter = {
+ .format_name = "copy-before-write",
+ .instance_size = sizeof(BDRVCopyBeforeWriteState),
- .bdrv_co_preadv = backup_top_co_preadv,
- .bdrv_co_pwritev = backup_top_co_pwritev,
- .bdrv_co_pwrite_zeroes = backup_top_co_pwrite_zeroes,
- .bdrv_co_pdiscard = backup_top_co_pdiscard,
- .bdrv_co_flush = backup_top_co_flush,
+ .bdrv_co_preadv = cbw_co_preadv,
+ .bdrv_co_pwritev = cbw_co_pwritev,
+ .bdrv_co_pwrite_zeroes = cbw_co_pwrite_zeroes,
+ .bdrv_co_pdiscard = cbw_co_pdiscard,
+ .bdrv_co_flush = cbw_co_flush,
- .bdrv_refresh_filename = backup_top_refresh_filename,
+ .bdrv_refresh_filename = cbw_refresh_filename,
- .bdrv_child_perm = backup_top_child_perm,
+ .bdrv_child_perm = cbw_child_perm,
.is_filter = true,
};
-BlockDriverState *bdrv_backup_top_append(BlockDriverState *source,
- BlockDriverState *target,
- const char *filter_node_name,
- uint64_t cluster_size,
- BackupPerf *perf,
- BdrvRequestFlags write_flags,
- BlockCopyState **bcs,
- Error **errp)
+BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
+ BlockDriverState *target,
+ const char *filter_node_name,
+ uint64_t cluster_size,
+ BackupPerf *perf,
+ BdrvRequestFlags write_flags,
+ BlockCopyState **bcs,
+ Error **errp)
{
ERRP_GUARD();
int ret;
- BDRVBackupTopState *state;
+ BDRVCopyBeforeWriteState *state;
BlockDriverState *top;
bool appended = false;
assert(source->total_sectors == target->total_sectors);
- top = bdrv_new_open_driver(&bdrv_backup_top_filter, filter_node_name,
+ top = bdrv_new_open_driver(&bdrv_cbw_filter, filter_node_name,
BDRV_O_RDWR, errp);
if (!top) {
return NULL;
@@ -210,7 +210,7 @@ BlockDriverState *bdrv_backup_top_append(BlockDriverState *source,
ret = bdrv_append(top, source, errp);
if (ret < 0) {
- error_prepend(errp, "Cannot append backup-top filter: ");
+ error_prepend(errp, "Cannot append copy-before-write filter: ");
goto fail;
}
appended = true;
@@ -231,7 +231,7 @@ BlockDriverState *bdrv_backup_top_append(BlockDriverState *source,
fail:
if (appended) {
- bdrv_backup_top_drop(top);
+ bdrv_cbw_drop(top);
} else {
bdrv_unref(top);
}
@@ -241,9 +241,9 @@ fail:
return NULL;
}
-void bdrv_backup_top_drop(BlockDriverState *bs)
+void bdrv_cbw_drop(BlockDriverState *bs)
{
- BDRVBackupTopState *s = bs->opaque;
+ BDRVCopyBeforeWriteState *s = bs->opaque;
bdrv_drop_filter(bs, &error_abort);
diff --git a/MAINTAINERS b/MAINTAINERS
index dffcb651f4..973cecc70e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2342,8 +2342,8 @@ F: block/mirror.c
F: qapi/job.json
F: block/block-copy.c
F: include/block/block-copy.c
-F: block/backup-top.h
-F: block/backup-top.c
+F: block/copy-before-write.h
+F: block/copy-before-write.c
F: include/block/aio_task.h
F: block/aio_task.c
F: util/qemu-co-shared-resource.c
diff --git a/block/meson.build b/block/meson.build
index 0450914c7a..66ee11e62c 100644
--- a/block/meson.build
+++ b/block/meson.build
@@ -4,7 +4,7 @@ block_ss.add(files(
'aio_task.c',
'amend.c',
'backup.c',
- 'backup-top.c',
+ 'copy-before-write.c',
'blkdebug.c',
'blklogwrites.c',
'blkverify.c',
diff --git a/tests/qemu-iotests/283 b/tests/qemu-iotests/283
index 010c22f0a2..a09e0183ae 100755
--- a/tests/qemu-iotests/283
+++ b/tests/qemu-iotests/283
@@ -1,7 +1,7 @@
#!/usr/bin/env python3
# group: auto quick
#
-# Test for backup-top filter permission activation failure
+# Test for copy-before-write filter permission conflict
#
# Copyright (c) 2019 Virtuozzo International GmbH.
#
@@ -31,13 +31,13 @@ size = 1024 * 1024
""" Test description
When performing a backup, all writes on the source subtree must go through the
-backup-top filter so it can copy all data to the target before it is changed.
-backup-top filter is appended above source node, to achieve this thing, so all
-parents of source node are handled. A configuration with side parents of source
-sub-tree with write permission is unsupported (we'd have append several
-backup-top filter like nodes to handle such parents). The test create an
-example of such configuration and checks that a backup is then not allowed
-(blockdev-backup command should fail).
+copy-before-write filter so it can copy all data to the target before it is
+changed. copy-before-write filter is appended above source node, to achieve
+this thing, so all parents of source node are handled. A configuration with
+side parents of source sub-tree with write permission is unsupported (we'd have
+append several copy-before-write filter like nodes to handle such parents). The
+test create an example of such configuration and checks that a backup is then
+not allowed (blockdev-backup command should fail).
The configuration:
@@ -57,11 +57,10 @@ The configuration:
│ base │ ◀──────────── │ other │
└─────────────┘ └───────┘
-On activation (see .active field of backup-top state in block/backup-top.c),
-backup-top is going to unshare write permission on its source child. Write
-unsharing will be propagated to the "source->base" link and will conflict with
-other node write permission. So permission update will fail and backup job will
-not be started.
+copy-before-write filter wants to unshare write permission on its source child.
+Write unsharing will be propagated to the "source->base" link and will conflict
+with other node write permission. So permission update will fail and backup job
+will not be started.
Note, that the only thing which prevents backup of running on such
configuration is default permission propagation scheme. It may be altered by
@@ -99,13 +98,9 @@ vm.qmp_log('blockdev-backup', sync='full', device='source', target='target')
vm.shutdown()
-print('\n=== backup-top should be gone after job-finalize ===\n')
+print('\n=== copy-before-write filter should be gone after job-finalize ===\n')
-# Check that the backup-top node is gone after job-finalize.
-#
-# During finalization, the node becomes inactive and can no longer
-# function. If it is still present, new parents might be attached, and
-# there would be no meaningful way to handle their I/O requests.
+# Check that the copy-before-write node is gone after job-finalize.
vm = iotests.VM()
vm.launch()
@@ -131,7 +126,7 @@ vm.qmp_log('blockdev-backup',
vm.event_wait('BLOCK_JOB_PENDING', 5.0)
-# The backup-top filter should still be present prior to finalization
+# The copy-before-write filter should still be present prior to finalization
assert vm.node_info('backup-filter') is not None
vm.qmp_log('job-finalize', id='backup')
diff --git a/tests/qemu-iotests/283.out b/tests/qemu-iotests/283.out
index c6e12b15c5..f2b7219632 100644
--- a/tests/qemu-iotests/283.out
+++ b/tests/qemu-iotests/283.out
@@ -5,9 +5,9 @@
{"execute": "blockdev-add", "arguments": {"driver": "blkdebug", "image": "base", "node-name": "other", "take-child-perms": ["write"]}}
{"return": {}}
{"execute": "blockdev-backup", "arguments": {"device": "source", "sync": "full", "target": "target"}}
-{"error": {"class": "GenericError", "desc": "Cannot append backup-top filter: Permission conflict on node 'base': permissions 'write' are both required by node 'other' (uses node 'base' as 'image' child) and unshared by node 'source' (uses node 'base' as 'image' child)."}}
+{"error": {"class": "GenericError", "desc": "Cannot append copy-before-write filter: Permission conflict on node 'base': permissions 'write' are both required by node 'other' (uses node 'base' as 'image' child) and unshared by node 'source' (uses node 'base' as 'image' child)."}}
-=== backup-top should be gone after job-finalize ===
+=== copy-before-write filter should be gone after job-finalize ===
{"execute": "blockdev-add", "arguments": {"driver": "null-co", "node-name": "source"}}
{"return": {}}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 26/56] block-copy: move detecting fleecing scheme to block-copy
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (24 preceding siblings ...)
2021-09-01 15:15 ` [PULL 25/56] block: rename backup-top to copy-before-write Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 27/56] block/block-copy: introduce block_copy_set_copy_opts() Hanna Reitz
` (31 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
We want to simplify initialization interface of copy-before-write
filter as we are going to make it public. So, let's detect fleecing
scheme exactly in block-copy code, to not pass this information through
extra levels.
Why not just set BDRV_REQ_SERIALISING unconditionally: because we are
going to implement new more efficient fleecing scheme which will not
rely on backing feature.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20210824083856.17408-7-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.h | 2 +-
include/block/block-copy.h | 3 +--
block/backup.c | 21 +--------------------
block/block-copy.c | 24 +++++++++++++++++++++---
block/copy-before-write.c | 4 ++--
5 files changed, 26 insertions(+), 28 deletions(-)
diff --git a/block/copy-before-write.h b/block/copy-before-write.h
index 5977b7aa31..f37e2249ae 100644
--- a/block/copy-before-write.h
+++ b/block/copy-before-write.h
@@ -34,7 +34,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
const char *filter_node_name,
uint64_t cluster_size,
BackupPerf *perf,
- BdrvRequestFlags write_flags,
+ bool compress,
BlockCopyState **bcs,
Error **errp);
void bdrv_cbw_drop(BlockDriverState *bs);
diff --git a/include/block/block-copy.h b/include/block/block-copy.h
index 5c8278895c..734389d32a 100644
--- a/include/block/block-copy.h
+++ b/include/block/block-copy.h
@@ -26,8 +26,7 @@ typedef struct BlockCopyCallState BlockCopyCallState;
BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
int64_t cluster_size, bool use_copy_range,
- BdrvRequestFlags write_flags,
- Error **errp);
+ bool compress, Error **errp);
void block_copy_set_progress_meter(BlockCopyState *s, ProgressMeter *pm);
diff --git a/block/backup.c b/block/backup.c
index ac91821b08..84f9a5f02c 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -407,7 +407,6 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
int64_t len, target_len;
BackupBlockJob *job = NULL;
int64_t cluster_size;
- BdrvRequestFlags write_flags;
BlockDriverState *cbw = NULL;
BlockCopyState *bcs = NULL;
@@ -504,26 +503,8 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
goto error;
}
- /*
- * If source is in backing chain of target assume that target is going to be
- * used for "image fleecing", i.e. it should represent a kind of snapshot of
- * source at backup-start point in time. And target is going to be read by
- * somebody (for example, used as NBD export) during backup job.
- *
- * In this case, we need to add BDRV_REQ_SERIALISING write flag to avoid
- * intersection of backup writes and third party reads from target,
- * otherwise reading from target we may occasionally read already updated by
- * guest data.
- *
- * For more information see commit f8d59dfb40bb and test
- * tests/qemu-iotests/222
- */
- write_flags = (bdrv_chain_contains(target, bs) ? BDRV_REQ_SERIALISING : 0) |
- (compress ? BDRV_REQ_WRITE_COMPRESSED : 0),
-
cbw = bdrv_cbw_append(bs, target, filter_node_name,
- cluster_size, perf,
- write_flags, &bcs, errp);
+ cluster_size, perf, compress, &bcs, errp);
if (!cbw) {
goto error;
}
diff --git a/block/block-copy.c b/block/block-copy.c
index 0becad52da..58b4345a5a 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -317,10 +317,11 @@ static uint32_t block_copy_max_transfer(BdrvChild *source, BdrvChild *target)
BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
int64_t cluster_size, bool use_copy_range,
- BdrvRequestFlags write_flags, Error **errp)
+ bool compress, Error **errp)
{
BlockCopyState *s;
BdrvDirtyBitmap *copy_bitmap;
+ bool is_fleecing;
copy_bitmap = bdrv_create_dirty_bitmap(source->bs, cluster_size, NULL,
errp);
@@ -329,6 +330,22 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
}
bdrv_disable_dirty_bitmap(copy_bitmap);
+ /*
+ * If source is in backing chain of target assume that target is going to be
+ * used for "image fleecing", i.e. it should represent a kind of snapshot of
+ * source at backup-start point in time. And target is going to be read by
+ * somebody (for example, used as NBD export) during backup job.
+ *
+ * In this case, we need to add BDRV_REQ_SERIALISING write flag to avoid
+ * intersection of backup writes and third party reads from target,
+ * otherwise reading from target we may occasionally read already updated by
+ * guest data.
+ *
+ * For more information see commit f8d59dfb40bb and test
+ * tests/qemu-iotests/222
+ */
+ is_fleecing = bdrv_chain_contains(target->bs, source->bs);
+
s = g_new(BlockCopyState, 1);
*s = (BlockCopyState) {
.source = source,
@@ -336,7 +353,8 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
.copy_bitmap = copy_bitmap,
.cluster_size = cluster_size,
.len = bdrv_dirty_bitmap_size(copy_bitmap),
- .write_flags = write_flags,
+ .write_flags = (is_fleecing ? BDRV_REQ_SERIALISING : 0) |
+ (compress ? BDRV_REQ_WRITE_COMPRESSED : 0),
.mem = shres_create(BLOCK_COPY_MAX_MEM),
.max_transfer = QEMU_ALIGN_DOWN(
block_copy_max_transfer(source, target),
@@ -351,7 +369,7 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
* behalf).
*/
s->method = COPY_READ_WRITE_CLUSTER;
- } else if (write_flags & BDRV_REQ_WRITE_COMPRESSED) {
+ } else if (compress) {
/* Compression supports only cluster-size writes and no copy-range. */
s->method = COPY_READ_WRITE_CLUSTER;
} else {
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 0dc5a107cf..4337076c1c 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -171,7 +171,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
const char *filter_node_name,
uint64_t cluster_size,
BackupPerf *perf,
- BdrvRequestFlags write_flags,
+ bool compress,
BlockCopyState **bcs,
Error **errp)
{
@@ -218,7 +218,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
state->cluster_size = cluster_size;
state->bcs = block_copy_state_new(top->backing, state->target,
cluster_size, perf->use_copy_range,
- write_flags, errp);
+ compress, errp);
if (!state->bcs) {
error_prepend(errp, "Cannot create block-copy-state: ");
goto fail;
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 27/56] block/block-copy: introduce block_copy_set_copy_opts()
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (25 preceding siblings ...)
2021-09-01 15:15 ` [PULL 26/56] block-copy: move detecting fleecing scheme to block-copy Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 28/56] block/backup: set copy_range and compress after filter insertion Hanna Reitz
` (30 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
We'll need a possibility to set compress and use_copy_range options
after initialization of the state. So make corresponding part of
block_copy_state_new() separate and public.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210824083856.17408-8-vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
include/block/block-copy.h | 3 +++
block/block-copy.c | 49 ++++++++++++++++++++++----------------
2 files changed, 32 insertions(+), 20 deletions(-)
diff --git a/include/block/block-copy.h b/include/block/block-copy.h
index 734389d32a..dca6c4ce36 100644
--- a/include/block/block-copy.h
+++ b/include/block/block-copy.h
@@ -28,6 +28,9 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
int64_t cluster_size, bool use_copy_range,
bool compress, Error **errp);
+/* Function should be called prior any actual copy request */
+void block_copy_set_copy_opts(BlockCopyState *s, bool use_copy_range,
+ bool compress);
void block_copy_set_progress_meter(BlockCopyState *s, ProgressMeter *pm);
void block_copy_state_free(BlockCopyState *s);
diff --git a/block/block-copy.c b/block/block-copy.c
index 58b4345a5a..e83870ff81 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -315,6 +315,33 @@ static uint32_t block_copy_max_transfer(BdrvChild *source, BdrvChild *target)
target->bs->bl.max_transfer));
}
+void block_copy_set_copy_opts(BlockCopyState *s, bool use_copy_range,
+ bool compress)
+{
+ /* Keep BDRV_REQ_SERIALISING set (or not set) in block_copy_state_new() */
+ s->write_flags = (s->write_flags & BDRV_REQ_SERIALISING) |
+ (compress ? BDRV_REQ_WRITE_COMPRESSED : 0);
+
+ if (s->max_transfer < s->cluster_size) {
+ /*
+ * copy_range does not respect max_transfer. We don't want to bother
+ * with requests smaller than block-copy cluster size, so fallback to
+ * buffered copying (read and write respect max_transfer on their
+ * behalf).
+ */
+ s->method = COPY_READ_WRITE_CLUSTER;
+ } else if (compress) {
+ /* Compression supports only cluster-size writes and no copy-range. */
+ s->method = COPY_READ_WRITE_CLUSTER;
+ } else {
+ /*
+ * If copy range enabled, start with COPY_RANGE_SMALL, until first
+ * successful copy_range (look at block_copy_do_copy).
+ */
+ s->method = use_copy_range ? COPY_RANGE_SMALL : COPY_READ_WRITE;
+ }
+}
+
BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
int64_t cluster_size, bool use_copy_range,
bool compress, Error **errp)
@@ -353,32 +380,14 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
.copy_bitmap = copy_bitmap,
.cluster_size = cluster_size,
.len = bdrv_dirty_bitmap_size(copy_bitmap),
- .write_flags = (is_fleecing ? BDRV_REQ_SERIALISING : 0) |
- (compress ? BDRV_REQ_WRITE_COMPRESSED : 0),
+ .write_flags = (is_fleecing ? BDRV_REQ_SERIALISING : 0),
.mem = shres_create(BLOCK_COPY_MAX_MEM),
.max_transfer = QEMU_ALIGN_DOWN(
block_copy_max_transfer(source, target),
cluster_size),
};
- if (s->max_transfer < cluster_size) {
- /*
- * copy_range does not respect max_transfer. We don't want to bother
- * with requests smaller than block-copy cluster size, so fallback to
- * buffered copying (read and write respect max_transfer on their
- * behalf).
- */
- s->method = COPY_READ_WRITE_CLUSTER;
- } else if (compress) {
- /* Compression supports only cluster-size writes and no copy-range. */
- s->method = COPY_READ_WRITE_CLUSTER;
- } else {
- /*
- * If copy range enabled, start with COPY_RANGE_SMALL, until first
- * successful copy_range (look at block_copy_do_copy).
- */
- s->method = use_copy_range ? COPY_RANGE_SMALL : COPY_READ_WRITE;
- }
+ block_copy_set_copy_opts(s, use_copy_range, compress);
ratelimit_init(&s->rate_limit);
qemu_co_mutex_init(&s->lock);
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 28/56] block/backup: set copy_range and compress after filter insertion
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (26 preceding siblings ...)
2021-09-01 15:15 ` [PULL 27/56] block/block-copy: introduce block_copy_set_copy_opts() Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 29/56] block/backup: move cluster size calculation to block-copy Hanna Reitz
` (29 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
We are going to publish copy-before-write filter, so it would be
initialized through options. Still we don't want to publish compress
and copy-range options, as
1. Modern way to enable compression is to use compress filter.
2. For copy-range it's unclean how to make proper interface:
- it's has experimental prefix for backup job anyway
- the whole BackupPerf structure doesn't make sense for the filter
So, let's just add copy-range possibility to the filter later if
needed.
Still, we are going to continue support for compression and
experimental copy-range in backup job. So, set these options after
filter creation.
Note, that we can drop "compress" argument of bdrv_cbw_append() now, as
well as "perf". The only reason not doing so is that now, when I
prepare this patch the big series around it is already reviewed and I
want to avoid extra rebase conflicts to simplify review of the
following version.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20210824083856.17408-9-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.h | 1 -
block/backup.c | 3 ++-
block/copy-before-write.c | 4 +---
3 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/block/copy-before-write.h b/block/copy-before-write.h
index f37e2249ae..538aab8bdb 100644
--- a/block/copy-before-write.h
+++ b/block/copy-before-write.h
@@ -33,7 +33,6 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
BlockDriverState *target,
const char *filter_node_name,
uint64_t cluster_size,
- BackupPerf *perf,
bool compress,
BlockCopyState **bcs,
Error **errp);
diff --git a/block/backup.c b/block/backup.c
index 84f9a5f02c..b31fd99ab3 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -504,7 +504,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
}
cbw = bdrv_cbw_append(bs, target, filter_node_name,
- cluster_size, perf, compress, &bcs, errp);
+ cluster_size, false, &bcs, errp);
if (!cbw) {
goto error;
}
@@ -530,6 +530,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
job->len = len;
job->perf = *perf;
+ block_copy_set_copy_opts(bcs, perf->use_copy_range, compress);
block_copy_set_progress_meter(bcs, &job->common.job.progress);
block_copy_set_speed(bcs, speed);
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 4337076c1c..235251a640 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -170,7 +170,6 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
BlockDriverState *target,
const char *filter_node_name,
uint64_t cluster_size,
- BackupPerf *perf,
bool compress,
BlockCopyState **bcs,
Error **errp)
@@ -217,8 +216,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
state->cluster_size = cluster_size;
state->bcs = block_copy_state_new(top->backing, state->target,
- cluster_size, perf->use_copy_range,
- compress, errp);
+ cluster_size, false, compress, errp);
if (!state->bcs) {
error_prepend(errp, "Cannot create block-copy-state: ");
goto fail;
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 29/56] block/backup: move cluster size calculation to block-copy
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (27 preceding siblings ...)
2021-09-01 15:15 ` [PULL 28/56] block/backup: set copy_range and compress after filter insertion Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 30/56] block/copy-before-write: relax permission requirements when no parents Hanna Reitz
` (28 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
The main consumer of cluster-size is block-copy. Let's calculate it
here instead of passing through backup-top.
We are going to publish copy-before-write filter soon, so it will be
created through options. But we don't want for now to make explicit
option for cluster-size, let's continue to calculate it automatically.
So, now is the time to get rid of cluster_size argument for
bdrv_cbw_append().
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-10-vsementsov@virtuozzo.com>
[hreitz: Add qemu/error-report.h include to block/block-copy.c]
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.h | 1 -
include/block/block-copy.h | 5 +--
block/backup.c | 62 ++++++--------------------------------
block/block-copy.c | 52 +++++++++++++++++++++++++++++++-
block/copy-before-write.c | 10 +++---
5 files changed, 67 insertions(+), 63 deletions(-)
diff --git a/block/copy-before-write.h b/block/copy-before-write.h
index 538aab8bdb..b386fd8f01 100644
--- a/block/copy-before-write.h
+++ b/block/copy-before-write.h
@@ -32,7 +32,6 @@
BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
BlockDriverState *target,
const char *filter_node_name,
- uint64_t cluster_size,
bool compress,
BlockCopyState **bcs,
Error **errp);
diff --git a/include/block/block-copy.h b/include/block/block-copy.h
index dca6c4ce36..b8a2d63545 100644
--- a/include/block/block-copy.h
+++ b/include/block/block-copy.h
@@ -25,8 +25,8 @@ typedef struct BlockCopyState BlockCopyState;
typedef struct BlockCopyCallState BlockCopyCallState;
BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
- int64_t cluster_size, bool use_copy_range,
- bool compress, Error **errp);
+ bool use_copy_range, bool compress,
+ Error **errp);
/* Function should be called prior any actual copy request */
void block_copy_set_copy_opts(BlockCopyState *s, bool use_copy_range,
@@ -91,6 +91,7 @@ void block_copy_kick(BlockCopyCallState *call_state);
void block_copy_call_cancel(BlockCopyCallState *call_state);
BdrvDirtyBitmap *block_copy_dirty_bitmap(BlockCopyState *s);
+int64_t block_copy_cluster_size(BlockCopyState *s);
void block_copy_set_skip_unallocated(BlockCopyState *s, bool skip);
#endif /* BLOCK_COPY_H */
diff --git a/block/backup.c b/block/backup.c
index b31fd99ab3..83516297cb 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -29,8 +29,6 @@
#include "block/copy-before-write.h"
-#define BACKUP_CLUSTER_SIZE_DEFAULT (1 << 16)
-
typedef struct BackupBlockJob {
BlockJob common;
BlockDriverState *cbw;
@@ -354,43 +352,6 @@ static const BlockJobDriver backup_job_driver = {
.set_speed = backup_set_speed,
};
-static int64_t backup_calculate_cluster_size(BlockDriverState *target,
- Error **errp)
-{
- int ret;
- BlockDriverInfo bdi;
- bool target_does_cow = bdrv_backing_chain_next(target);
-
- /*
- * If there is no backing file on the target, we cannot rely on COW if our
- * backup cluster size is smaller than the target cluster size. Even for
- * targets with a backing file, try to avoid COW if possible.
- */
- ret = bdrv_get_info(target, &bdi);
- if (ret == -ENOTSUP && !target_does_cow) {
- /* Cluster size is not defined */
- warn_report("The target block device doesn't provide "
- "information about the block size and it doesn't have a "
- "backing file. The default block size of %u bytes is "
- "used. If the actual block size of the target exceeds "
- "this default, the backup may be unusable",
- BACKUP_CLUSTER_SIZE_DEFAULT);
- return BACKUP_CLUSTER_SIZE_DEFAULT;
- } else if (ret < 0 && !target_does_cow) {
- error_setg_errno(errp, -ret,
- "Couldn't determine the cluster size of the target image, "
- "which has no backing file");
- error_append_hint(errp,
- "Aborting, since this may create an unusable destination image\n");
- return ret;
- } else if (ret < 0 && target_does_cow) {
- /* Not fatal; just trudge on ahead. */
- return BACKUP_CLUSTER_SIZE_DEFAULT;
- }
-
- return MAX(BACKUP_CLUSTER_SIZE_DEFAULT, bdi.cluster_size);
-}
-
BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
BlockDriverState *target, int64_t speed,
MirrorSyncMode sync_mode, BdrvDirtyBitmap *sync_bitmap,
@@ -448,11 +409,6 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
return NULL;
}
- cluster_size = backup_calculate_cluster_size(target, errp);
- if (cluster_size < 0) {
- goto error;
- }
-
if (perf->max_workers < 1) {
error_setg(errp, "max-workers must be greater than zero");
return NULL;
@@ -464,13 +420,6 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
return NULL;
}
- if (perf->max_chunk && perf->max_chunk < cluster_size) {
- error_setg(errp, "Required max-chunk (%" PRIi64 ") is less than backup "
- "cluster size (%" PRIi64 ")", perf->max_chunk, cluster_size);
- return NULL;
- }
-
-
if (sync_bitmap) {
/* If we need to write to this bitmap, check that we can: */
if (bitmap_mode != BITMAP_SYNC_MODE_NEVER &&
@@ -503,12 +452,19 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
goto error;
}
- cbw = bdrv_cbw_append(bs, target, filter_node_name,
- cluster_size, false, &bcs, errp);
+ cbw = bdrv_cbw_append(bs, target, filter_node_name, false, &bcs, errp);
if (!cbw) {
goto error;
}
+ cluster_size = block_copy_cluster_size(bcs);
+
+ if (perf->max_chunk && perf->max_chunk < cluster_size) {
+ error_setg(errp, "Required max-chunk (%" PRIi64 ") is less than backup "
+ "cluster size (%" PRIi64 ")", perf->max_chunk, cluster_size);
+ goto error;
+ }
+
/* job->len is fixed, so we can't allow resize */
job = block_job_create(job_id, &backup_job_driver, txn, cbw,
0, BLK_PERM_ALL,
diff --git a/block/block-copy.c b/block/block-copy.c
index e83870ff81..5d0076ac93 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -21,12 +21,14 @@
#include "qemu/units.h"
#include "qemu/coroutine.h"
#include "block/aio_task.h"
+#include "qemu/error-report.h"
#define BLOCK_COPY_MAX_COPY_RANGE (16 * MiB)
#define BLOCK_COPY_MAX_BUFFER (1 * MiB)
#define BLOCK_COPY_MAX_MEM (128 * MiB)
#define BLOCK_COPY_MAX_WORKERS 64
#define BLOCK_COPY_SLICE_TIME 100000000ULL /* ns */
+#define BLOCK_COPY_CLUSTER_SIZE_DEFAULT (1 << 16)
typedef enum {
COPY_READ_WRITE_CLUSTER,
@@ -342,14 +344,57 @@ void block_copy_set_copy_opts(BlockCopyState *s, bool use_copy_range,
}
}
+static int64_t block_copy_calculate_cluster_size(BlockDriverState *target,
+ Error **errp)
+{
+ int ret;
+ BlockDriverInfo bdi;
+ bool target_does_cow = bdrv_backing_chain_next(target);
+
+ /*
+ * If there is no backing file on the target, we cannot rely on COW if our
+ * backup cluster size is smaller than the target cluster size. Even for
+ * targets with a backing file, try to avoid COW if possible.
+ */
+ ret = bdrv_get_info(target, &bdi);
+ if (ret == -ENOTSUP && !target_does_cow) {
+ /* Cluster size is not defined */
+ warn_report("The target block device doesn't provide "
+ "information about the block size and it doesn't have a "
+ "backing file. The default block size of %u bytes is "
+ "used. If the actual block size of the target exceeds "
+ "this default, the backup may be unusable",
+ BLOCK_COPY_CLUSTER_SIZE_DEFAULT);
+ return BLOCK_COPY_CLUSTER_SIZE_DEFAULT;
+ } else if (ret < 0 && !target_does_cow) {
+ error_setg_errno(errp, -ret,
+ "Couldn't determine the cluster size of the target image, "
+ "which has no backing file");
+ error_append_hint(errp,
+ "Aborting, since this may create an unusable destination image\n");
+ return ret;
+ } else if (ret < 0 && target_does_cow) {
+ /* Not fatal; just trudge on ahead. */
+ return BLOCK_COPY_CLUSTER_SIZE_DEFAULT;
+ }
+
+ return MAX(BLOCK_COPY_CLUSTER_SIZE_DEFAULT, bdi.cluster_size);
+}
+
BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
- int64_t cluster_size, bool use_copy_range,
+ bool use_copy_range,
bool compress, Error **errp)
{
BlockCopyState *s;
+ int64_t cluster_size;
BdrvDirtyBitmap *copy_bitmap;
bool is_fleecing;
+ cluster_size = block_copy_calculate_cluster_size(target->bs, errp);
+ if (cluster_size < 0) {
+ return NULL;
+ }
+
copy_bitmap = bdrv_create_dirty_bitmap(source->bs, cluster_size, NULL,
errp);
if (!copy_bitmap) {
@@ -960,6 +1005,11 @@ BdrvDirtyBitmap *block_copy_dirty_bitmap(BlockCopyState *s)
return s->copy_bitmap;
}
+int64_t block_copy_cluster_size(BlockCopyState *s)
+{
+ return s->cluster_size;
+}
+
void block_copy_set_skip_unallocated(BlockCopyState *s, bool skip)
{
qatomic_set(&s->skip_unallocated, skip);
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 235251a640..a7996d54db 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -37,7 +37,6 @@
typedef struct BDRVCopyBeforeWriteState {
BlockCopyState *bcs;
BdrvChild *target;
- int64_t cluster_size;
} BDRVCopyBeforeWriteState;
static coroutine_fn int cbw_co_preadv(
@@ -52,13 +51,14 @@ static coroutine_fn int cbw_do_copy_before_write(BlockDriverState *bs,
{
BDRVCopyBeforeWriteState *s = bs->opaque;
uint64_t off, end;
+ int64_t cluster_size = block_copy_cluster_size(s->bcs);
if (flags & BDRV_REQ_WRITE_UNCHANGED) {
return 0;
}
- off = QEMU_ALIGN_DOWN(offset, s->cluster_size);
- end = QEMU_ALIGN_UP(offset + bytes, s->cluster_size);
+ off = QEMU_ALIGN_DOWN(offset, cluster_size);
+ end = QEMU_ALIGN_UP(offset + bytes, cluster_size);
return block_copy(s->bcs, off, end - off, true);
}
@@ -169,7 +169,6 @@ BlockDriver bdrv_cbw_filter = {
BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
BlockDriverState *target,
const char *filter_node_name,
- uint64_t cluster_size,
bool compress,
BlockCopyState **bcs,
Error **errp)
@@ -214,9 +213,8 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
}
appended = true;
- state->cluster_size = cluster_size;
state->bcs = block_copy_state_new(top->backing, state->target,
- cluster_size, false, compress, errp);
+ false, compress, errp);
if (!state->bcs) {
error_prepend(errp, "Cannot create block-copy-state: ");
goto fail;
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 30/56] block/copy-before-write: relax permission requirements when no parents
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (28 preceding siblings ...)
2021-09-01 15:15 ` [PULL 29/56] block/backup: move cluster size calculation to block-copy Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 31/56] block/copy-before-write: drop extra bdrv_unref on failure path Hanna Reitz
` (27 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
We are going to publish copy-before-write filter. So, user should be
able to create it with blockdev-add first, specifying both filtered and
target children. And then do blockdev-reopen, to actually insert the
filter where needed.
Currently, filter unshares write permission unconditionally on source
node. It's good, but it will not allow to do blockdev-add. So, let's
relax restrictions when filter doesn't have any parent.
Test output is modified, as now permission conflict happens only when
job creates a blk parent for filter node.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-11-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.c | 8 +++++---
tests/qemu-iotests/283.out | 2 +-
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index a7996d54db..2a51cc64e4 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -142,10 +142,12 @@ static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c,
bdrv_default_perms(bs, c, role, reopen_queue,
perm, shared, nperm, nshared);
- if (perm & BLK_PERM_WRITE) {
- *nperm = *nperm | BLK_PERM_CONSISTENT_READ;
+ if (!QLIST_EMPTY(&bs->parents)) {
+ if (perm & BLK_PERM_WRITE) {
+ *nperm = *nperm | BLK_PERM_CONSISTENT_READ;
+ }
+ *nshared &= ~(BLK_PERM_WRITE | BLK_PERM_RESIZE);
}
- *nshared &= ~(BLK_PERM_WRITE | BLK_PERM_RESIZE);
}
}
diff --git a/tests/qemu-iotests/283.out b/tests/qemu-iotests/283.out
index f2b7219632..5bb75952ef 100644
--- a/tests/qemu-iotests/283.out
+++ b/tests/qemu-iotests/283.out
@@ -5,7 +5,7 @@
{"execute": "blockdev-add", "arguments": {"driver": "blkdebug", "image": "base", "node-name": "other", "take-child-perms": ["write"]}}
{"return": {}}
{"execute": "blockdev-backup", "arguments": {"device": "source", "sync": "full", "target": "target"}}
-{"error": {"class": "GenericError", "desc": "Cannot append copy-before-write filter: Permission conflict on node 'base': permissions 'write' are both required by node 'other' (uses node 'base' as 'image' child) and unshared by node 'source' (uses node 'base' as 'image' child)."}}
+{"error": {"class": "GenericError", "desc": "Permission conflict on node 'base': permissions 'write' are both required by node 'other' (uses node 'base' as 'image' child) and unshared by node 'source' (uses node 'base' as 'image' child)."}}
=== copy-before-write filter should be gone after job-finalize ===
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 31/56] block/copy-before-write: drop extra bdrv_unref on failure path
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (29 preceding siblings ...)
2021-09-01 15:15 ` [PULL 30/56] block/copy-before-write: relax permission requirements when no parents Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 32/56] block/copy-before-write: use file child instead of backing Hanna Reitz
` (26 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
bdrv_attach_child() do bdrv_unref() on failure, so we shouldn't do it
by hand here.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-12-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 2a51cc64e4..945d9340f4 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -201,7 +201,6 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
state->target = bdrv_attach_child(top, target, "target", &child_of_bds,
BDRV_CHILD_DATA, errp);
if (!state->target) {
- bdrv_unref(target);
bdrv_unref(top);
return NULL;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 32/56] block/copy-before-write: use file child instead of backing
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (30 preceding siblings ...)
2021-09-01 15:15 ` [PULL 31/56] block/copy-before-write: drop extra bdrv_unref on failure path Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 33/56] block/copy-before-write: bdrv_cbw_append(): replace child at last Hanna Reitz
` (25 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
We are going to publish copy-before-write filter, and there no public
backing-child-based filter in Qemu. No reason to create a precedent, so
let's refactor copy-before-write filter instead.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-13-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.c | 39 ++++++++++++++++++++++-----------------
1 file changed, 22 insertions(+), 17 deletions(-)
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 945d9340f4..7a6c15f141 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -43,7 +43,7 @@ static coroutine_fn int cbw_co_preadv(
BlockDriverState *bs, uint64_t offset, uint64_t bytes,
QEMUIOVector *qiov, int flags)
{
- return bdrv_co_preadv(bs->backing, offset, bytes, qiov, flags);
+ return bdrv_co_preadv(bs->file, offset, bytes, qiov, flags);
}
static coroutine_fn int cbw_do_copy_before_write(BlockDriverState *bs,
@@ -71,7 +71,7 @@ static int coroutine_fn cbw_co_pdiscard(BlockDriverState *bs,
return ret;
}
- return bdrv_co_pdiscard(bs->backing, offset, bytes);
+ return bdrv_co_pdiscard(bs->file, offset, bytes);
}
static int coroutine_fn cbw_co_pwrite_zeroes(BlockDriverState *bs,
@@ -82,7 +82,7 @@ static int coroutine_fn cbw_co_pwrite_zeroes(BlockDriverState *bs,
return ret;
}
- return bdrv_co_pwrite_zeroes(bs->backing, offset, bytes, flags);
+ return bdrv_co_pwrite_zeroes(bs->file, offset, bytes, flags);
}
static coroutine_fn int cbw_co_pwritev(BlockDriverState *bs,
@@ -95,29 +95,22 @@ static coroutine_fn int cbw_co_pwritev(BlockDriverState *bs,
return ret;
}
- return bdrv_co_pwritev(bs->backing, offset, bytes, qiov, flags);
+ return bdrv_co_pwritev(bs->file, offset, bytes, qiov, flags);
}
static int coroutine_fn cbw_co_flush(BlockDriverState *bs)
{
- if (!bs->backing) {
+ if (!bs->file) {
return 0;
}
- return bdrv_co_flush(bs->backing->bs);
+ return bdrv_co_flush(bs->file->bs);
}
static void cbw_refresh_filename(BlockDriverState *bs)
{
- if (bs->backing == NULL) {
- /*
- * we can be here after failed bdrv_attach_child in
- * bdrv_set_backing_hd
- */
- return;
- }
pstrcpy(bs->exact_filename, sizeof(bs->exact_filename),
- bs->backing->bs->filename);
+ bs->file->bs->filename);
}
static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c,
@@ -186,6 +179,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
top = bdrv_new_open_driver(&bdrv_cbw_filter, filter_node_name,
BDRV_O_RDWR, errp);
if (!top) {
+ error_prepend(errp, "Cannot open driver: ");
return NULL;
}
@@ -201,21 +195,32 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
state->target = bdrv_attach_child(top, target, "target", &child_of_bds,
BDRV_CHILD_DATA, errp);
if (!state->target) {
+ error_prepend(errp, "Cannot attach target child: ");
+ bdrv_unref(top);
+ return NULL;
+ }
+
+ bdrv_ref(source);
+ top->file = bdrv_attach_child(top, source, "file", &child_of_bds,
+ BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
+ errp);
+ if (!top->file) {
+ error_prepend(errp, "Cannot attach file child: ");
bdrv_unref(top);
return NULL;
}
bdrv_drained_begin(source);
- ret = bdrv_append(top, source, errp);
+ ret = bdrv_replace_node(source, top, errp);
if (ret < 0) {
error_prepend(errp, "Cannot append copy-before-write filter: ");
goto fail;
}
appended = true;
- state->bcs = block_copy_state_new(top->backing, state->target,
- false, compress, errp);
+ state->bcs = block_copy_state_new(top->file, state->target, false, compress,
+ errp);
if (!state->bcs) {
error_prepend(errp, "Cannot create block-copy-state: ");
goto fail;
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 33/56] block/copy-before-write: bdrv_cbw_append(): replace child at last
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (31 preceding siblings ...)
2021-09-01 15:15 ` [PULL 32/56] block/copy-before-write: use file child instead of backing Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 34/56] block/copy-before-write: introduce cbw_init() Hanna Reitz
` (24 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Refactor the function to replace child at last. Thus we don't need to
revert it and code is simplified.
block-copy state initialization being done before replacing the child
doesn't need any drained section.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-14-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.c | 33 +++++++++++----------------------
1 file changed, 11 insertions(+), 22 deletions(-)
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 7a6c15f141..adbbc64aa9 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -172,7 +172,6 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
int ret;
BDRVCopyBeforeWriteState *state;
BlockDriverState *top;
- bool appended = false;
assert(source->total_sectors == target->total_sectors);
@@ -196,8 +195,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
BDRV_CHILD_DATA, errp);
if (!state->target) {
error_prepend(errp, "Cannot attach target child: ");
- bdrv_unref(top);
- return NULL;
+ goto fail;
}
bdrv_ref(source);
@@ -206,18 +204,8 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
errp);
if (!top->file) {
error_prepend(errp, "Cannot attach file child: ");
- bdrv_unref(top);
- return NULL;
- }
-
- bdrv_drained_begin(source);
-
- ret = bdrv_replace_node(source, top, errp);
- if (ret < 0) {
- error_prepend(errp, "Cannot append copy-before-write filter: ");
goto fail;
}
- appended = true;
state->bcs = block_copy_state_new(top->file, state->target, false, compress,
errp);
@@ -225,21 +213,22 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
error_prepend(errp, "Cannot create block-copy-state: ");
goto fail;
}
- *bcs = state->bcs;
+ bdrv_drained_begin(source);
+ ret = bdrv_replace_node(source, top, errp);
bdrv_drained_end(source);
+ if (ret < 0) {
+ error_prepend(errp, "Cannot append copy-before-write filter: ");
+ goto fail;
+ }
+
+ *bcs = state->bcs;
return top;
fail:
- if (appended) {
- bdrv_cbw_drop(top);
- } else {
- bdrv_unref(top);
- }
-
- bdrv_drained_end(source);
-
+ block_copy_state_free(state->bcs);
+ bdrv_unref(top);
return NULL;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 34/56] block/copy-before-write: introduce cbw_init()
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (32 preceding siblings ...)
2021-09-01 15:15 ` [PULL 33/56] block/copy-before-write: bdrv_cbw_append(): replace child at last Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 35/56] block/copy-before-write: cbw_init(): rename variables Hanna Reitz
` (23 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Move part of bdrv_cbw_append() to new function cbw_open(). It's an
intermediate step for adding normal .bdrv_open() handler to the
filter. With this commit no logic is changed, but we have a function
which will be turned into .bdrv_open() handler in future commit.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-15-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.c | 69 +++++++++++++++++++++++----------------
1 file changed, 41 insertions(+), 28 deletions(-)
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index adbbc64aa9..a4fee645fd 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -144,6 +144,45 @@ static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c,
}
}
+static int cbw_init(BlockDriverState *top, BlockDriverState *source,
+ BlockDriverState *target, bool compress, Error **errp)
+{
+ BDRVCopyBeforeWriteState *state = top->opaque;
+
+ top->total_sectors = source->total_sectors;
+ top->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |
+ (BDRV_REQ_FUA & source->supported_write_flags);
+ top->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
+ ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
+ source->supported_zero_flags);
+
+ bdrv_ref(target);
+ state->target = bdrv_attach_child(top, target, "target", &child_of_bds,
+ BDRV_CHILD_DATA, errp);
+ if (!state->target) {
+ error_prepend(errp, "Cannot attach target child: ");
+ return -EINVAL;
+ }
+
+ bdrv_ref(source);
+ top->file = bdrv_attach_child(top, source, "file", &child_of_bds,
+ BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
+ errp);
+ if (!top->file) {
+ error_prepend(errp, "Cannot attach file child: ");
+ return -EINVAL;
+ }
+
+ state->bcs = block_copy_state_new(top->file, state->target, false, compress,
+ errp);
+ if (!state->bcs) {
+ error_prepend(errp, "Cannot create block-copy-state: ");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
BlockDriver bdrv_cbw_filter = {
.format_name = "copy-before-write",
.instance_size = sizeof(BDRVCopyBeforeWriteState),
@@ -181,36 +220,10 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
error_prepend(errp, "Cannot open driver: ");
return NULL;
}
-
state = top->opaque;
- top->total_sectors = source->total_sectors;
- top->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |
- (BDRV_REQ_FUA & source->supported_write_flags);
- top->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
- ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
- source->supported_zero_flags);
-
- bdrv_ref(target);
- state->target = bdrv_attach_child(top, target, "target", &child_of_bds,
- BDRV_CHILD_DATA, errp);
- if (!state->target) {
- error_prepend(errp, "Cannot attach target child: ");
- goto fail;
- }
- bdrv_ref(source);
- top->file = bdrv_attach_child(top, source, "file", &child_of_bds,
- BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
- errp);
- if (!top->file) {
- error_prepend(errp, "Cannot attach file child: ");
- goto fail;
- }
-
- state->bcs = block_copy_state_new(top->file, state->target, false, compress,
- errp);
- if (!state->bcs) {
- error_prepend(errp, "Cannot create block-copy-state: ");
+ ret = cbw_init(top, source, target, compress, errp);
+ if (ret < 0) {
goto fail;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 35/56] block/copy-before-write: cbw_init(): rename variables
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (33 preceding siblings ...)
2021-09-01 15:15 ` [PULL 34/56] block/copy-before-write: introduce cbw_init() Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:15 ` [PULL 36/56] block/copy-before-write: cbw_init(): use file child after attaching Hanna Reitz
` (22 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
One more step closer to real .bdrv_open() handler: use more usual names
for bs being initialized and its state.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-16-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.c | 29 ++++++++++++++---------------
1 file changed, 14 insertions(+), 15 deletions(-)
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index a4fee645fd..d7f1833efa 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -144,38 +144,37 @@ static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c,
}
}
-static int cbw_init(BlockDriverState *top, BlockDriverState *source,
+static int cbw_init(BlockDriverState *bs, BlockDriverState *source,
BlockDriverState *target, bool compress, Error **errp)
{
- BDRVCopyBeforeWriteState *state = top->opaque;
+ BDRVCopyBeforeWriteState *s = bs->opaque;
- top->total_sectors = source->total_sectors;
- top->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |
+ bs->total_sectors = source->total_sectors;
+ bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |
(BDRV_REQ_FUA & source->supported_write_flags);
- top->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
+ bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
source->supported_zero_flags);
bdrv_ref(target);
- state->target = bdrv_attach_child(top, target, "target", &child_of_bds,
- BDRV_CHILD_DATA, errp);
- if (!state->target) {
+ s->target = bdrv_attach_child(bs, target, "target", &child_of_bds,
+ BDRV_CHILD_DATA, errp);
+ if (!s->target) {
error_prepend(errp, "Cannot attach target child: ");
return -EINVAL;
}
bdrv_ref(source);
- top->file = bdrv_attach_child(top, source, "file", &child_of_bds,
- BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
- errp);
- if (!top->file) {
+ bs->file = bdrv_attach_child(bs, source, "file", &child_of_bds,
+ BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
+ errp);
+ if (!bs->file) {
error_prepend(errp, "Cannot attach file child: ");
return -EINVAL;
}
- state->bcs = block_copy_state_new(top->file, state->target, false, compress,
- errp);
- if (!state->bcs) {
+ s->bcs = block_copy_state_new(bs->file, s->target, false, compress, errp);
+ if (!s->bcs) {
error_prepend(errp, "Cannot create block-copy-state: ");
return -EINVAL;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 36/56] block/copy-before-write: cbw_init(): use file child after attaching
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (34 preceding siblings ...)
2021-09-01 15:15 ` [PULL 35/56] block/copy-before-write: cbw_init(): rename variables Hanna Reitz
@ 2021-09-01 15:15 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 37/56] block/copy-before-write: bdrv_cbw_append(): drop unused compress arg Hanna Reitz
` (21 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:15 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
In the next commit we'll get rid of source argument of cbw_init().
Prepare to it now, to make next commit simpler: move the code block
that uses source below attaching the child and use bs->file->bs instead
of source variable.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-17-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index d7f1833efa..4858dcf8ff 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -149,13 +149,6 @@ static int cbw_init(BlockDriverState *bs, BlockDriverState *source,
{
BDRVCopyBeforeWriteState *s = bs->opaque;
- bs->total_sectors = source->total_sectors;
- bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |
- (BDRV_REQ_FUA & source->supported_write_flags);
- bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
- ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
- source->supported_zero_flags);
-
bdrv_ref(target);
s->target = bdrv_attach_child(bs, target, "target", &child_of_bds,
BDRV_CHILD_DATA, errp);
@@ -173,6 +166,13 @@ static int cbw_init(BlockDriverState *bs, BlockDriverState *source,
return -EINVAL;
}
+ bs->total_sectors = bs->file->bs->total_sectors;
+ bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |
+ (BDRV_REQ_FUA & bs->file->bs->supported_write_flags);
+ bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
+ ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
+ bs->file->bs->supported_zero_flags);
+
s->bcs = block_copy_state_new(bs->file, s->target, false, compress, errp);
if (!s->bcs) {
error_prepend(errp, "Cannot create block-copy-state: ");
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 37/56] block/copy-before-write: bdrv_cbw_append(): drop unused compress arg
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (35 preceding siblings ...)
2021-09-01 15:15 ` [PULL 36/56] block/copy-before-write: cbw_init(): use file child after attaching Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 38/56] block/copy-before-write: cbw_init(): use options Hanna Reitz
` (20 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20210824083856.17408-18-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.h | 1 -
block/backup.c | 2 +-
block/copy-before-write.c | 7 +++----
3 files changed, 4 insertions(+), 6 deletions(-)
diff --git a/block/copy-before-write.h b/block/copy-before-write.h
index b386fd8f01..51847e711a 100644
--- a/block/copy-before-write.h
+++ b/block/copy-before-write.h
@@ -32,7 +32,6 @@
BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
BlockDriverState *target,
const char *filter_node_name,
- bool compress,
BlockCopyState **bcs,
Error **errp);
void bdrv_cbw_drop(BlockDriverState *bs);
diff --git a/block/backup.c b/block/backup.c
index 83516297cb..4869f1e5da 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -452,7 +452,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
goto error;
}
- cbw = bdrv_cbw_append(bs, target, filter_node_name, false, &bcs, errp);
+ cbw = bdrv_cbw_append(bs, target, filter_node_name, &bcs, errp);
if (!cbw) {
goto error;
}
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 4858dcf8ff..1e7180760a 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -145,7 +145,7 @@ static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c,
}
static int cbw_init(BlockDriverState *bs, BlockDriverState *source,
- BlockDriverState *target, bool compress, Error **errp)
+ BlockDriverState *target, Error **errp)
{
BDRVCopyBeforeWriteState *s = bs->opaque;
@@ -173,7 +173,7 @@ static int cbw_init(BlockDriverState *bs, BlockDriverState *source,
((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
bs->file->bs->supported_zero_flags);
- s->bcs = block_copy_state_new(bs->file, s->target, false, compress, errp);
+ s->bcs = block_copy_state_new(bs->file, s->target, false, false, errp);
if (!s->bcs) {
error_prepend(errp, "Cannot create block-copy-state: ");
return -EINVAL;
@@ -202,7 +202,6 @@ BlockDriver bdrv_cbw_filter = {
BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
BlockDriverState *target,
const char *filter_node_name,
- bool compress,
BlockCopyState **bcs,
Error **errp)
{
@@ -221,7 +220,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
}
state = top->opaque;
- ret = cbw_init(top, source, target, compress, errp);
+ ret = cbw_init(top, source, target, errp);
if (ret < 0) {
goto fail;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 38/56] block/copy-before-write: cbw_init(): use options
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (36 preceding siblings ...)
2021-09-01 15:16 ` [PULL 37/56] block/copy-before-write: bdrv_cbw_append(): drop unused compress arg Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 39/56] block/copy-before-write: initialize block-copy bitmap Hanna Reitz
` (19 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
One more step closer to .bdrv_open(): use options instead of plain
arguments. Move to bdrv_open_child() calls, native for drive open
handlers.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20210824083856.17408-19-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.c | 29 +++++++++++++++--------------
1 file changed, 15 insertions(+), 14 deletions(-)
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 1e7180760a..1cefcade78 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -144,25 +144,20 @@ static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c,
}
}
-static int cbw_init(BlockDriverState *bs, BlockDriverState *source,
- BlockDriverState *target, Error **errp)
+static int cbw_init(BlockDriverState *bs, QDict *options, Error **errp)
{
BDRVCopyBeforeWriteState *s = bs->opaque;
- bdrv_ref(target);
- s->target = bdrv_attach_child(bs, target, "target", &child_of_bds,
- BDRV_CHILD_DATA, errp);
- if (!s->target) {
- error_prepend(errp, "Cannot attach target child: ");
+ bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds,
+ BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
+ false, errp);
+ if (!bs->file) {
return -EINVAL;
}
- bdrv_ref(source);
- bs->file = bdrv_attach_child(bs, source, "file", &child_of_bds,
- BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
- errp);
- if (!bs->file) {
- error_prepend(errp, "Cannot attach file child: ");
+ s->target = bdrv_open_child(NULL, options, "target", bs, &child_of_bds,
+ BDRV_CHILD_DATA, false, errp);
+ if (!s->target) {
return -EINVAL;
}
@@ -209,6 +204,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
int ret;
BDRVCopyBeforeWriteState *state;
BlockDriverState *top;
+ QDict *opts;
assert(source->total_sectors == target->total_sectors);
@@ -220,7 +216,12 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
}
state = top->opaque;
- ret = cbw_init(top, source, target, errp);
+ opts = qdict_new();
+ qdict_put_str(opts, "file", bdrv_get_node_name(source));
+ qdict_put_str(opts, "target", bdrv_get_node_name(target));
+
+ ret = cbw_init(top, opts, errp);
+ qobject_unref(opts);
if (ret < 0) {
goto fail;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 39/56] block/copy-before-write: initialize block-copy bitmap
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (37 preceding siblings ...)
2021-09-01 15:16 ` [PULL 38/56] block/copy-before-write: cbw_init(): use options Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 40/56] block/block-copy: make setting progress optional Hanna Reitz
` (18 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
We are going to publish copy-before-write filter to be used in separate
of backup. Future step would support bitmap for the filter. But let's
start from full set bitmap.
We have to modify backup, as bitmap is first initialized by
copy-before-write filter, and then backup modifies it.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-20-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/backup.c | 16 +++++++---------
block/copy-before-write.c | 4 ++++
2 files changed, 11 insertions(+), 9 deletions(-)
diff --git a/block/backup.c b/block/backup.c
index 4869f1e5da..687d2882bc 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -233,18 +233,16 @@ static void backup_init_bcs_bitmap(BackupBlockJob *job)
BdrvDirtyBitmap *bcs_bitmap = block_copy_dirty_bitmap(job->bcs);
if (job->sync_mode == MIRROR_SYNC_MODE_BITMAP) {
+ bdrv_clear_dirty_bitmap(bcs_bitmap, NULL);
ret = bdrv_dirty_bitmap_merge_internal(bcs_bitmap, job->sync_bitmap,
NULL, true);
assert(ret);
- } else {
- if (job->sync_mode == MIRROR_SYNC_MODE_TOP) {
- /*
- * We can't hog the coroutine to initialize this thoroughly.
- * Set a flag and resume work when we are able to yield safely.
- */
- block_copy_set_skip_unallocated(job->bcs, true);
- }
- bdrv_set_dirty_bitmap(bcs_bitmap, 0, job->len);
+ } else if (job->sync_mode == MIRROR_SYNC_MODE_TOP) {
+ /*
+ * We can't hog the coroutine to initialize this thoroughly.
+ * Set a flag and resume work when we are able to yield safely.
+ */
+ block_copy_set_skip_unallocated(job->bcs, true);
}
estimate = bdrv_get_dirty_count(bcs_bitmap);
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 1cefcade78..2efe098aae 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -147,6 +147,7 @@ static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c,
static int cbw_init(BlockDriverState *bs, QDict *options, Error **errp)
{
BDRVCopyBeforeWriteState *s = bs->opaque;
+ BdrvDirtyBitmap *copy_bitmap;
bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds,
BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
@@ -174,6 +175,9 @@ static int cbw_init(BlockDriverState *bs, QDict *options, Error **errp)
return -EINVAL;
}
+ copy_bitmap = block_copy_dirty_bitmap(s->bcs);
+ bdrv_set_dirty_bitmap(copy_bitmap, 0, bdrv_dirty_bitmap_size(copy_bitmap));
+
return 0;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 40/56] block/block-copy: make setting progress optional
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (38 preceding siblings ...)
2021-09-01 15:16 ` [PULL 39/56] block/copy-before-write: initialize block-copy bitmap Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 41/56] block/copy-before-write: make public block driver Hanna Reitz
` (17 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Now block-copy will crash if user don't set progress meter by
block_copy_set_progress_meter(). copy-before-write filter will be used
in separate of backup job, and it doesn't want any progress meter (for
now). So, allow not setting it.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-21-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/block-copy.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/block/block-copy.c b/block/block-copy.c
index 5d0076ac93..443261e4e4 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -292,9 +292,11 @@ static void coroutine_fn block_copy_task_end(BlockCopyTask *task, int ret)
bdrv_set_dirty_bitmap(task->s->copy_bitmap, task->offset, task->bytes);
}
QLIST_REMOVE(task, list);
- progress_set_remaining(task->s->progress,
- bdrv_get_dirty_count(task->s->copy_bitmap) +
- task->s->in_flight_bytes);
+ if (task->s->progress) {
+ progress_set_remaining(task->s->progress,
+ bdrv_get_dirty_count(task->s->copy_bitmap) +
+ task->s->in_flight_bytes);
+ }
qemu_co_queue_restart_all(&task->wait_queue);
}
@@ -594,7 +596,7 @@ static coroutine_fn int block_copy_task_entry(AioTask *task)
t->call_state->ret = ret;
t->call_state->error_is_read = error_is_read;
}
- } else {
+ } else if (s->progress) {
progress_work_done(s->progress, t->bytes);
}
}
@@ -700,9 +702,11 @@ int64_t block_copy_reset_unallocated(BlockCopyState *s,
if (!ret) {
qemu_co_mutex_lock(&s->lock);
bdrv_reset_dirty_bitmap(s->copy_bitmap, offset, bytes);
- progress_set_remaining(s->progress,
- bdrv_get_dirty_count(s->copy_bitmap) +
- s->in_flight_bytes);
+ if (s->progress) {
+ progress_set_remaining(s->progress,
+ bdrv_get_dirty_count(s->copy_bitmap) +
+ s->in_flight_bytes);
+ }
qemu_co_mutex_unlock(&s->lock);
}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 41/56] block/copy-before-write: make public block driver
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (39 preceding siblings ...)
2021-09-01 15:16 ` [PULL 40/56] block/block-copy: make setting progress optional Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-20 9:41 ` Kevin Wolf
2021-09-01 15:16 ` [PULL 42/56] qapi: publish copy-before-write filter Hanna Reitz
` (16 subsequent siblings)
57 siblings, 1 reply; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Finally, copy-before-write gets own .bdrv_open and .bdrv_close
handlers, block_init() call and becomes available through bdrv_open().
To achieve this:
- cbw_init gets unused flags argument and becomes cbw_open
- block_copy_state_free() call moved to new cbw_close()
- in bdrv_cbw_append:
- options are completed with driver and node-name, and we can simply
use bdrv_insert_node() to do both open and drained replacing
- in bdrv_cbw_drop:
- cbw_close() is now responsible for freeing s->bcs, so don't do it
here
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-22-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/copy-before-write.c | 60 ++++++++++++++++++---------------------
1 file changed, 28 insertions(+), 32 deletions(-)
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 2efe098aae..2cd68b480a 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -144,7 +144,8 @@ static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c,
}
}
-static int cbw_init(BlockDriverState *bs, QDict *options, Error **errp)
+static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
+ Error **errp)
{
BDRVCopyBeforeWriteState *s = bs->opaque;
BdrvDirtyBitmap *copy_bitmap;
@@ -181,10 +182,21 @@ static int cbw_init(BlockDriverState *bs, QDict *options, Error **errp)
return 0;
}
+static void cbw_close(BlockDriverState *bs)
+{
+ BDRVCopyBeforeWriteState *s = bs->opaque;
+
+ block_copy_state_free(s->bcs);
+ s->bcs = NULL;
+}
+
BlockDriver bdrv_cbw_filter = {
.format_name = "copy-before-write",
.instance_size = sizeof(BDRVCopyBeforeWriteState),
+ .bdrv_open = cbw_open,
+ .bdrv_close = cbw_close,
+
.bdrv_co_preadv = cbw_co_preadv,
.bdrv_co_pwritev = cbw_co_pwritev,
.bdrv_co_pwrite_zeroes = cbw_co_pwrite_zeroes,
@@ -205,56 +217,40 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
Error **errp)
{
ERRP_GUARD();
- int ret;
BDRVCopyBeforeWriteState *state;
BlockDriverState *top;
QDict *opts;
assert(source->total_sectors == target->total_sectors);
- top = bdrv_new_open_driver(&bdrv_cbw_filter, filter_node_name,
- BDRV_O_RDWR, errp);
- if (!top) {
- error_prepend(errp, "Cannot open driver: ");
- return NULL;
- }
- state = top->opaque;
-
opts = qdict_new();
+ qdict_put_str(opts, "driver", "copy-before-write");
+ if (filter_node_name) {
+ qdict_put_str(opts, "node-name", filter_node_name);
+ }
qdict_put_str(opts, "file", bdrv_get_node_name(source));
qdict_put_str(opts, "target", bdrv_get_node_name(target));
- ret = cbw_init(top, opts, errp);
- qobject_unref(opts);
- if (ret < 0) {
- goto fail;
- }
-
- bdrv_drained_begin(source);
- ret = bdrv_replace_node(source, top, errp);
- bdrv_drained_end(source);
- if (ret < 0) {
- error_prepend(errp, "Cannot append copy-before-write filter: ");
- goto fail;
+ top = bdrv_insert_node(source, opts, BDRV_O_RDWR, errp);
+ if (!top) {
+ return NULL;
}
+ state = top->opaque;
*bcs = state->bcs;
return top;
-
-fail:
- block_copy_state_free(state->bcs);
- bdrv_unref(top);
- return NULL;
}
void bdrv_cbw_drop(BlockDriverState *bs)
{
- BDRVCopyBeforeWriteState *s = bs->opaque;
-
bdrv_drop_filter(bs, &error_abort);
-
- block_copy_state_free(s->bcs);
-
bdrv_unref(bs);
}
+
+static void cbw_init(void)
+{
+ bdrv_register(&bdrv_cbw_filter);
+}
+
+block_init(cbw_init);
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* Re: [PULL 41/56] block/copy-before-write: make public block driver
2021-09-01 15:16 ` [PULL 41/56] block/copy-before-write: make public block driver Hanna Reitz
@ 2021-09-20 9:41 ` Kevin Wolf
2021-09-20 10:08 ` Vladimir Sementsov-Ogievskiy
0 siblings, 1 reply; 62+ messages in thread
From: Kevin Wolf @ 2021-09-20 9:41 UTC (permalink / raw)
To: Hanna Reitz; +Cc: vsementsov, qemu-devel, qemu-block
Am 01.09.2021 um 17:16 hat Hanna Reitz geschrieben:
> From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
>
> Finally, copy-before-write gets own .bdrv_open and .bdrv_close
> handlers, block_init() call and becomes available through bdrv_open().
>
> To achieve this:
>
> - cbw_init gets unused flags argument and becomes cbw_open
> - block_copy_state_free() call moved to new cbw_close()
> - in bdrv_cbw_append:
> - options are completed with driver and node-name, and we can simply
> use bdrv_insert_node() to do both open and drained replacing
> - in bdrv_cbw_drop:
> - cbw_close() is now responsible for freeing s->bcs, so don't do it
> here
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> Reviewed-by: Max Reitz <mreitz@redhat.com>
> Message-Id: <20210824083856.17408-22-vsementsov@virtuozzo.com>
> Signed-off-by: Hanna Reitz <hreitz@redhat.com>
This patch results in a change in behaviour that I assume was not
intentional: Previously, creating a backup block job would succeed to
insert the filter node independently of whether the filter driver was
whitelisted or not. After this patch, it becomes an error if the filter
driver isn't explicitly whitelisted:
https://bugzilla.redhat.com/show_bug.cgi?id=2004812
> block/copy-before-write.c | 60 ++++++++++++++++++---------------------
> 1 file changed, 28 insertions(+), 32 deletions(-)
>
> diff --git a/block/copy-before-write.c b/block/copy-before-write.c
> index 2efe098aae..2cd68b480a 100644
> --- a/block/copy-before-write.c
> +++ b/block/copy-before-write.c
> @@ -144,7 +144,8 @@ static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c,
> }
> }
>
> -static int cbw_init(BlockDriverState *bs, QDict *options, Error **errp)
> +static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
> + Error **errp)
> {
> BDRVCopyBeforeWriteState *s = bs->opaque;
> BdrvDirtyBitmap *copy_bitmap;
> @@ -181,10 +182,21 @@ static int cbw_init(BlockDriverState *bs, QDict *options, Error **errp)
> return 0;
> }
>
> +static void cbw_close(BlockDriverState *bs)
> +{
> + BDRVCopyBeforeWriteState *s = bs->opaque;
> +
> + block_copy_state_free(s->bcs);
> + s->bcs = NULL;
> +}
> +
> BlockDriver bdrv_cbw_filter = {
> .format_name = "copy-before-write",
> .instance_size = sizeof(BDRVCopyBeforeWriteState),
>
> + .bdrv_open = cbw_open,
> + .bdrv_close = cbw_close,
> +
> .bdrv_co_preadv = cbw_co_preadv,
> .bdrv_co_pwritev = cbw_co_pwritev,
> .bdrv_co_pwrite_zeroes = cbw_co_pwrite_zeroes,
> @@ -205,56 +217,40 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
> Error **errp)
> {
> ERRP_GUARD();
> - int ret;
> BDRVCopyBeforeWriteState *state;
> BlockDriverState *top;
> QDict *opts;
>
> assert(source->total_sectors == target->total_sectors);
>
> - top = bdrv_new_open_driver(&bdrv_cbw_filter, filter_node_name,
> - BDRV_O_RDWR, errp);
bdrv_new_open_driver() is a relatively short and straightforward code
path that just directly opens a driver for internal use.
> - if (!top) {
> - error_prepend(errp, "Cannot open driver: ");
> - return NULL;
> - }
> - state = top->opaque;
> -
> opts = qdict_new();
> + qdict_put_str(opts, "driver", "copy-before-write");
> + if (filter_node_name) {
> + qdict_put_str(opts, "node-name", filter_node_name);
> + }
> qdict_put_str(opts, "file", bdrv_get_node_name(source));
> qdict_put_str(opts, "target", bdrv_get_node_name(target));
>
> - ret = cbw_init(top, opts, errp);
> - qobject_unref(opts);
> - if (ret < 0) {
> - goto fail;
> - }
> -
> - bdrv_drained_begin(source);
> - ret = bdrv_replace_node(source, top, errp);
> - bdrv_drained_end(source);
> - if (ret < 0) {
> - error_prepend(errp, "Cannot append copy-before-write filter: ");
> - goto fail;
> + top = bdrv_insert_node(source, opts, BDRV_O_RDWR, errp);
On the other hand, bdrv_insert_node() uses bdrv_open() internally, which
is a really long and messy code path that basically has to handle all of
the craziness that compatibility code for -drive needs to have.
Do we really need bdrv_open() here?
Or is all you really need just a version of bdrv_new_open_driver() that
accepts an options QDict instead of just flags?
Kevin
^ permalink raw reply [flat|nested] 62+ messages in thread* Re: [PULL 41/56] block/copy-before-write: make public block driver
2021-09-20 9:41 ` Kevin Wolf
@ 2021-09-20 10:08 ` Vladimir Sementsov-Ogievskiy
0 siblings, 0 replies; 62+ messages in thread
From: Vladimir Sementsov-Ogievskiy @ 2021-09-20 10:08 UTC (permalink / raw)
To: Kevin Wolf, Hanna Reitz; +Cc: qemu-block, qemu-devel
20.09.2021 12:41, Kevin Wolf wrote:
> Am 01.09.2021 um 17:16 hat Hanna Reitz geschrieben:
>> From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
>>
>> Finally, copy-before-write gets own .bdrv_open and .bdrv_close
>> handlers, block_init() call and becomes available through bdrv_open().
>>
>> To achieve this:
>>
>> - cbw_init gets unused flags argument and becomes cbw_open
>> - block_copy_state_free() call moved to new cbw_close()
>> - in bdrv_cbw_append:
>> - options are completed with driver and node-name, and we can simply
>> use bdrv_insert_node() to do both open and drained replacing
>> - in bdrv_cbw_drop:
>> - cbw_close() is now responsible for freeing s->bcs, so don't do it
>> here
>>
>> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
>> Reviewed-by: Max Reitz <mreitz@redhat.com>
>> Message-Id: <20210824083856.17408-22-vsementsov@virtuozzo.com>
>> Signed-off-by: Hanna Reitz <hreitz@redhat.com>
>
> This patch results in a change in behaviour that I assume was not
> intentional: Previously, creating a backup block job would succeed to
> insert the filter node independently of whether the filter driver was
> whitelisted or not. After this patch, it becomes an error if the filter
> driver isn't explicitly whitelisted:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=2004812
I'm sorry :( Will try to fix that today.
[..]
>> - ret = bdrv_replace_node(source, top, errp);
>> - bdrv_drained_end(source);
>> - if (ret < 0) {
>> - error_prepend(errp, "Cannot append copy-before-write filter: ");
>> - goto fail;
>> + top = bdrv_insert_node(source, opts, BDRV_O_RDWR, errp);
>
> On the other hand, bdrv_insert_node() uses bdrv_open() internally, which
> is a really long and messy code path that basically has to handle all of
> the craziness that compatibility code for -drive needs to have.
>
> Do we really need bdrv_open() here?
>
> Or is all you really need just a version of bdrv_new_open_driver() that
> accepts an options QDict instead of just flags?
>
Yes something like this, to always go through same interface.
--
Best regards,
Vladimir
^ permalink raw reply [flat|nested] 62+ messages in thread
* [PULL 42/56] qapi: publish copy-before-write filter
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (40 preceding siblings ...)
2021-09-01 15:16 ` [PULL 41/56] block/copy-before-write: make public block driver Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 43/56] python/qemu/machine.py: refactor _qemu_args() Hanna Reitz
` (15 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210824083856.17408-23-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
qapi/block-core.json | 25 +++++++++++++++++++++++--
1 file changed, 23 insertions(+), 2 deletions(-)
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 06674c25c9..c8ce1d9d5d 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2825,13 +2825,14 @@
# @blklogwrites: Since 3.0
# @blkreplay: Since 4.2
# @compress: Since 5.0
+# @copy-before-write: Since 6.2
#
# Since: 2.9
##
{ 'enum': 'BlockdevDriver',
'data': [ 'blkdebug', 'blklogwrites', 'blkreplay', 'blkverify', 'bochs',
- 'cloop', 'compress', 'copy-on-read', 'dmg', 'file', 'ftp', 'ftps',
- 'gluster',
+ 'cloop', 'compress', 'copy-before-write', 'copy-on-read', 'dmg',
+ 'file', 'ftp', 'ftps', 'gluster',
{'name': 'host_cdrom', 'if': 'HAVE_HOST_BLOCK_DEVICE' },
{'name': 'host_device', 'if': 'HAVE_HOST_BLOCK_DEVICE' },
'http', 'https', 'iscsi',
@@ -4049,6 +4050,25 @@
'base': 'BlockdevOptionsGenericFormat',
'data': { '*bottom': 'str' } }
+##
+# @BlockdevOptionsCbw:
+#
+# Driver specific block device options for the copy-before-write driver,
+# which does so called copy-before-write operations: when data is
+# written to the filter, the filter first reads corresponding blocks
+# from its file child and copies them to @target child. After successfully
+# copying, the write request is propagated to file child. If copying
+# fails, the original write request is failed too and no data is written
+# to file child.
+#
+# @target: The target for copy-before-write operations.
+#
+# Since: 6.2
+##
+{ 'struct': 'BlockdevOptionsCbw',
+ 'base': 'BlockdevOptionsGenericFormat',
+ 'data': { 'target': 'BlockdevRef' } }
+
##
# @BlockdevOptions:
#
@@ -4101,6 +4121,7 @@
'bochs': 'BlockdevOptionsGenericFormat',
'cloop': 'BlockdevOptionsGenericFormat',
'compress': 'BlockdevOptionsGenericFormat',
+ 'copy-before-write':'BlockdevOptionsCbw',
'copy-on-read':'BlockdevOptionsCor',
'dmg': 'BlockdevOptionsGenericFormat',
'file': 'BlockdevOptionsFile',
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 43/56] python/qemu/machine.py: refactor _qemu_args()
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (41 preceding siblings ...)
2021-09-01 15:16 ` [PULL 42/56] qapi: publish copy-before-write filter Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 44/56] python/qemu/machine: QEMUMachine: improve qmp() method Hanna Reitz
` (14 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
- use shorter construction
- don't create new dict if not needed
- drop extra unpacking key-val arguments
- drop extra default values
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20210824083856.17408-24-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
python/qemu/machine/machine.py | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)
diff --git a/python/qemu/machine/machine.py b/python/qemu/machine/machine.py
index 8b935813e9..3fde73cf10 100644
--- a/python/qemu/machine/machine.py
+++ b/python/qemu/machine/machine.py
@@ -570,14 +570,12 @@ def _qmp(self) -> QEMUMonitorProtocol:
return self._qmp_connection
@classmethod
- def _qmp_args(cls, _conv_keys: bool = True, **args: Any) -> Dict[str, Any]:
- qmp_args = dict()
- for key, value in args.items():
- if _conv_keys:
- qmp_args[key.replace('_', '-')] = value
- else:
- qmp_args[key] = value
- return qmp_args
+ def _qmp_args(cls, conv_keys: bool,
+ args: Dict[str, Any]) -> Dict[str, object]:
+ if conv_keys:
+ return {k.replace('_', '-'): v for k, v in args.items()}
+
+ return args
def qmp(self, cmd: str,
conv_keys: bool = True,
@@ -585,7 +583,7 @@ def qmp(self, cmd: str,
"""
Invoke a QMP command and return the response dict
"""
- qmp_args = self._qmp_args(conv_keys, **args)
+ qmp_args = self._qmp_args(conv_keys, args)
return self._qmp.cmd(cmd, args=qmp_args)
def command(self, cmd: str,
@@ -596,7 +594,7 @@ def command(self, cmd: str,
On success return the response dict.
On failure raise an exception.
"""
- qmp_args = self._qmp_args(conv_keys, **args)
+ qmp_args = self._qmp_args(conv_keys, args)
return self._qmp.command(cmd, **qmp_args)
def get_qmp_event(self, wait: bool = False) -> Optional[QMPMessage]:
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 44/56] python/qemu/machine: QEMUMachine: improve qmp() method
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (42 preceding siblings ...)
2021-09-01 15:16 ` [PULL 43/56] python/qemu/machine.py: refactor _qemu_args() Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 45/56] python:QEMUMachine: template typing for self returning methods Hanna Reitz
` (13 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
We often call qmp() with unpacking dict, like qmp('foo', **{...}).
mypy don't really like it, it thinks that passed unpacked dict is a
positional argument and complains that it type should be bool (because
second argument of qmp() is conv_keys: bool).
Allow passing dict directly, simplifying interface, and giving a way to
satisfy mypy.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20210824083856.17408-25-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
python/qemu/machine/machine.py | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/python/qemu/machine/machine.py b/python/qemu/machine/machine.py
index 3fde73cf10..6ec18570d9 100644
--- a/python/qemu/machine/machine.py
+++ b/python/qemu/machine/machine.py
@@ -578,11 +578,21 @@ def _qmp_args(cls, conv_keys: bool,
return args
def qmp(self, cmd: str,
- conv_keys: bool = True,
+ args_dict: Optional[Dict[str, object]] = None,
+ conv_keys: Optional[bool] = None,
**args: Any) -> QMPMessage:
"""
Invoke a QMP command and return the response dict
"""
+ if args_dict is not None:
+ assert not args
+ assert conv_keys is None
+ args = args_dict
+ conv_keys = False
+
+ if conv_keys is None:
+ conv_keys = True
+
qmp_args = self._qmp_args(conv_keys, args)
return self._qmp.cmd(cmd, args=qmp_args)
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 45/56] python:QEMUMachine: template typing for self returning methods
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (43 preceding siblings ...)
2021-09-01 15:16 ` [PULL 44/56] python/qemu/machine: QEMUMachine: improve qmp() method Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 46/56] iotests/222: fix pylint and mypy complains Hanna Reitz
` (12 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
mypy thinks that return value of these methods in subclusses is
QEMUMachine, which is wrong. So, make typing smarter.
Suggested-by: John Snow <jsnow@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210824083856.17408-26-vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
python/qemu/machine/machine.py | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/python/qemu/machine/machine.py b/python/qemu/machine/machine.py
index 6ec18570d9..a7081b1845 100644
--- a/python/qemu/machine/machine.py
+++ b/python/qemu/machine/machine.py
@@ -36,6 +36,7 @@
Sequence,
Tuple,
Type,
+ TypeVar,
)
from qemu.qmp import ( # pylint: disable=import-error
@@ -73,6 +74,9 @@ class AbnormalShutdown(QEMUMachineError):
"""
+_T = TypeVar('_T', bound='QEMUMachine')
+
+
class QEMUMachine:
"""
A QEMU VM.
@@ -169,7 +173,7 @@ def __init__(self,
self._remove_files: List[str] = []
self._user_killed = False
- def __enter__(self) -> 'QEMUMachine':
+ def __enter__(self: _T) -> _T:
return self
def __exit__(self,
@@ -185,8 +189,8 @@ def add_monitor_null(self) -> None:
self._args.append('-monitor')
self._args.append('null')
- def add_fd(self, fd: int, fdset: int,
- opaque: str, opts: str = '') -> 'QEMUMachine':
+ def add_fd(self: _T, fd: int, fdset: int,
+ opaque: str, opts: str = '') -> _T:
"""
Pass a file descriptor to the VM
"""
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 46/56] iotests/222: fix pylint and mypy complains
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (44 preceding siblings ...)
2021-09-01 15:16 ` [PULL 45/56] python:QEMUMachine: template typing for self returning methods Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 47/56] iotests/222: constantly use single quotes for strings Hanna Reitz
` (11 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Here:
- long line
- move to new interface of vm.qmp() (direct passing dict), to avoid
mypy false-positive, as it thinks that unpacked dict is a positional
argument.
- extra parenthesis
- handle event_wait possible None value
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-27-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/222 | 20 +++++++++++---------
tests/qemu-iotests/297 | 2 +-
2 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/tests/qemu-iotests/222 b/tests/qemu-iotests/222
index b48afe623e..5e2556f8df 100755
--- a/tests/qemu-iotests/222
+++ b/tests/qemu-iotests/222
@@ -50,7 +50,8 @@ remainder = [("0xd5", "0x108000", "32k"), # Right-end of partial-left [1]
with iotests.FilePath('base.img') as base_img_path, \
iotests.FilePath('fleece.img') as fleece_img_path, \
- iotests.FilePath('nbd.sock', base_dir=iotests.sock_dir) as nbd_sock_path, \
+ iotests.FilePath('nbd.sock',
+ base_dir=iotests.sock_dir) as nbd_sock_path, \
iotests.VM() as vm:
log('--- Setting up images ---')
@@ -81,7 +82,7 @@ with iotests.FilePath('base.img') as base_img_path, \
tgt_node = "fleeceNode"
# create tgt_node backed by src_node
- log(vm.qmp("blockdev-add", **{
+ log(vm.qmp("blockdev-add", {
"driver": "qcow2",
"node-name": tgt_node,
"file": {
@@ -103,8 +104,8 @@ with iotests.FilePath('base.img') as base_img_path, \
nbd_uri = 'nbd+unix:///%s?socket=%s' % (tgt_node, nbd_sock_path)
log(vm.qmp("nbd-server-start",
- **{"addr": { "type": "unix",
- "data": { "path": nbd_sock_path } } }))
+ {"addr": { "type": "unix",
+ "data": { "path": nbd_sock_path } } }))
log(vm.qmp("nbd-server-add", device=tgt_node))
@@ -112,7 +113,7 @@ with iotests.FilePath('base.img') as base_img_path, \
log('--- Sanity Check ---')
log('')
- for p in (patterns + zeroes):
+ for p in patterns + zeroes:
cmd = "read -P%s %s %s" % p
log(cmd)
assert qemu_io_silent('-r', '-f', 'raw', '-c', cmd, nbd_uri) == 0
@@ -130,7 +131,7 @@ with iotests.FilePath('base.img') as base_img_path, \
log('--- Verifying Data ---')
log('')
- for p in (patterns + zeroes):
+ for p in patterns + zeroes:
cmd = "read -P%s %s %s" % p
log(cmd)
assert qemu_io_silent('-r', '-f', 'raw', '-c', cmd, nbd_uri) == 0
@@ -140,8 +141,9 @@ with iotests.FilePath('base.img') as base_img_path, \
log('')
log(vm.qmp('block-job-cancel', device=src_node))
- log(vm.event_wait('BLOCK_JOB_CANCELLED'),
- filters=[iotests.filter_qmp_event])
+ e = vm.event_wait('BLOCK_JOB_CANCELLED')
+ assert e is not None
+ log(e, filters=[iotests.filter_qmp_event])
log(vm.qmp('nbd-server-stop'))
log(vm.qmp('blockdev-del', node_name=tgt_node))
vm.shutdown()
@@ -150,7 +152,7 @@ with iotests.FilePath('base.img') as base_img_path, \
log('--- Confirming writes ---')
log('')
- for p in (overwrite + remainder):
+ for p in overwrite + remainder:
cmd = "read -P%s %s %s" % p
log(cmd)
assert qemu_io_silent(base_img_path, '-c', cmd) == 0
diff --git a/tests/qemu-iotests/297 b/tests/qemu-iotests/297
index 433b732336..345b617b34 100755
--- a/tests/qemu-iotests/297
+++ b/tests/qemu-iotests/297
@@ -31,7 +31,7 @@ SKIP_FILES = (
'096', '118', '124', '132', '136', '139', '147', '148', '149',
'151', '152', '155', '163', '165', '169', '194', '196', '199', '202',
'203', '205', '206', '207', '208', '210', '211', '212', '213', '216',
- '218', '219', '222', '224', '228', '234', '235', '236', '237', '238',
+ '218', '219', '224', '228', '234', '235', '236', '237', '238',
'240', '242', '245', '246', '248', '255', '256', '257', '258', '260',
'262', '264', '266', '274', '277', '280', '281', '295', '296', '298',
'299', '302', '303', '304', '307',
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 47/56] iotests/222: constantly use single quotes for strings
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (45 preceding siblings ...)
2021-09-01 15:16 ` [PULL 46/56] iotests/222: fix pylint and mypy complains Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 48/56] iotests: move 222 to tests/image-fleecing Hanna Reitz
` (10 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
The file use both single and double quotes for strings. Let's be
consistent.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-28-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/222 | 68 +++++++++++++++++++++---------------------
1 file changed, 34 insertions(+), 34 deletions(-)
diff --git a/tests/qemu-iotests/222 b/tests/qemu-iotests/222
index 5e2556f8df..799369e290 100755
--- a/tests/qemu-iotests/222
+++ b/tests/qemu-iotests/222
@@ -30,23 +30,23 @@ iotests.script_initialize(
supported_platforms=['linux'],
)
-patterns = [("0x5d", "0", "64k"),
- ("0xd5", "1M", "64k"),
- ("0xdc", "32M", "64k"),
- ("0xcd", "0x3ff0000", "64k")] # 64M - 64K
+patterns = [('0x5d', '0', '64k'),
+ ('0xd5', '1M', '64k'),
+ ('0xdc', '32M', '64k'),
+ ('0xcd', '0x3ff0000', '64k')] # 64M - 64K
-overwrite = [("0xab", "0", "64k"), # Full overwrite
- ("0xad", "0x00f8000", "64k"), # Partial-left (1M-32K)
- ("0x1d", "0x2008000", "64k"), # Partial-right (32M+32K)
- ("0xea", "0x3fe0000", "64k")] # Adjacent-left (64M - 128K)
+overwrite = [('0xab', '0', '64k'), # Full overwrite
+ ('0xad', '0x00f8000', '64k'), # Partial-left (1M-32K)
+ ('0x1d', '0x2008000', '64k'), # Partial-right (32M+32K)
+ ('0xea', '0x3fe0000', '64k')] # Adjacent-left (64M - 128K)
-zeroes = [("0", "0x00f8000", "32k"), # Left-end of partial-left (1M-32K)
- ("0", "0x2010000", "32k"), # Right-end of partial-right (32M+64K)
- ("0", "0x3fe0000", "64k")] # overwrite[3]
+zeroes = [('0', '0x00f8000', '32k'), # Left-end of partial-left (1M-32K)
+ ('0', '0x2010000', '32k'), # Right-end of partial-right (32M+64K)
+ ('0', '0x3fe0000', '64k')] # overwrite[3]
-remainder = [("0xd5", "0x108000", "32k"), # Right-end of partial-left [1]
- ("0xdc", "32M", "32k"), # Left-end of partial-right [2]
- ("0xcd", "0x3ff0000", "64k")] # patterns[3]
+remainder = [('0xd5', '0x108000', '32k'), # Right-end of partial-left [1]
+ ('0xdc', '32M', '32k'), # Left-end of partial-right [2]
+ ('0xcd', '0x3ff0000', '64k')] # patterns[3]
with iotests.FilePath('base.img') as base_img_path, \
iotests.FilePath('fleece.img') as fleece_img_path, \
@@ -58,7 +58,7 @@ with iotests.FilePath('base.img') as base_img_path, \
log('')
assert qemu_img('create', '-f', iotests.imgfmt, base_img_path, '64M') == 0
- assert qemu_img('create', '-f', "qcow2", fleece_img_path, '64M') == 0
+ assert qemu_img('create', '-f', 'qcow2', fleece_img_path, '64M') == 0
for p in patterns:
qemu_io('-f', iotests.imgfmt,
@@ -78,43 +78,43 @@ with iotests.FilePath('base.img') as base_img_path, \
log('--- Setting up Fleecing Graph ---')
log('')
- src_node = "drive0"
- tgt_node = "fleeceNode"
+ src_node = 'drive0'
+ tgt_node = 'fleeceNode'
# create tgt_node backed by src_node
- log(vm.qmp("blockdev-add", {
- "driver": "qcow2",
- "node-name": tgt_node,
- "file": {
- "driver": "file",
- "filename": fleece_img_path,
+ log(vm.qmp('blockdev-add', {
+ 'driver': 'qcow2',
+ 'node-name': tgt_node,
+ 'file': {
+ 'driver': 'file',
+ 'filename': fleece_img_path,
},
- "backing": src_node,
+ 'backing': src_node,
}))
# Establish COW from source to fleecing node
- log(vm.qmp("blockdev-backup",
+ log(vm.qmp('blockdev-backup',
device=src_node,
target=tgt_node,
- sync="none"))
+ sync='none'))
log('')
log('--- Setting up NBD Export ---')
log('')
nbd_uri = 'nbd+unix:///%s?socket=%s' % (tgt_node, nbd_sock_path)
- log(vm.qmp("nbd-server-start",
- {"addr": { "type": "unix",
- "data": { "path": nbd_sock_path } } }))
+ log(vm.qmp('nbd-server-start',
+ {'addr': { 'type': 'unix',
+ 'data': { 'path': nbd_sock_path } } }))
- log(vm.qmp("nbd-server-add", device=tgt_node))
+ log(vm.qmp('nbd-server-add', device=tgt_node))
log('')
log('--- Sanity Check ---')
log('')
for p in patterns + zeroes:
- cmd = "read -P%s %s %s" % p
+ cmd = 'read -P%s %s %s' % p
log(cmd)
assert qemu_io_silent('-r', '-f', 'raw', '-c', cmd, nbd_uri) == 0
@@ -123,7 +123,7 @@ with iotests.FilePath('base.img') as base_img_path, \
log('')
for p in overwrite:
- cmd = "write -P%s %s %s" % p
+ cmd = 'write -P%s %s %s' % p
log(cmd)
log(vm.hmp_qemu_io(src_node, cmd))
@@ -132,7 +132,7 @@ with iotests.FilePath('base.img') as base_img_path, \
log('')
for p in patterns + zeroes:
- cmd = "read -P%s %s %s" % p
+ cmd = 'read -P%s %s %s' % p
log(cmd)
assert qemu_io_silent('-r', '-f', 'raw', '-c', cmd, nbd_uri) == 0
@@ -153,7 +153,7 @@ with iotests.FilePath('base.img') as base_img_path, \
log('')
for p in overwrite + remainder:
- cmd = "read -P%s %s %s" % p
+ cmd = 'read -P%s %s %s' % p
log(cmd)
assert qemu_io_silent(base_img_path, '-c', cmd) == 0
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 48/56] iotests: move 222 to tests/image-fleecing
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (46 preceding siblings ...)
2021-09-01 15:16 ` [PULL 47/56] iotests/222: constantly use single quotes for strings Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 49/56] iotests.py: hmp_qemu_io: support qdev Hanna Reitz
` (9 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Give a good name to test file.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-29-vsementsov@virtuozzo.com>
[hreitz: Adjust .gitlab-ci.d/buildtest.yml]
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
.gitlab-ci.d/buildtest.yml | 6 +++---
tests/qemu-iotests/{222 => tests/image-fleecing} | 0
tests/qemu-iotests/{222.out => tests/image-fleecing.out} | 0
3 files changed, 3 insertions(+), 3 deletions(-)
rename tests/qemu-iotests/{222 => tests/image-fleecing} (100%)
rename tests/qemu-iotests/{222.out => tests/image-fleecing.out} (100%)
diff --git a/.gitlab-ci.d/buildtest.yml b/.gitlab-ci.d/buildtest.yml
index 903ee65f32..e74998efb9 100644
--- a/.gitlab-ci.d/buildtest.yml
+++ b/.gitlab-ci.d/buildtest.yml
@@ -305,11 +305,11 @@ build-tcg-disabled:
- cd tests/qemu-iotests/
- ./check -raw 001 002 003 004 005 008 009 010 011 012 021 025 032 033 048
052 063 077 086 101 104 106 113 148 150 151 152 157 159 160 163
- 170 171 183 184 192 194 208 221 222 226 227 236 253 277
+ 170 171 183 184 192 194 208 221 226 227 236 253 277 image-fleecing
- ./check -qcow2 028 051 056 057 058 065 068 082 085 091 095 096 102 122
124 132 139 142 144 145 151 152 155 157 165 194 196 200 202
- 208 209 216 218 222 227 234 246 247 248 250 254 255 257 258
- 260 261 262 263 264 270 272 273 277 279
+ 208 209 216 218 227 234 246 247 248 250 254 255 257 258
+ 260 261 262 263 264 270 272 273 277 279 image-fleecing
build-user:
extends: .native_build_job_template
diff --git a/tests/qemu-iotests/222 b/tests/qemu-iotests/tests/image-fleecing
similarity index 100%
rename from tests/qemu-iotests/222
rename to tests/qemu-iotests/tests/image-fleecing
diff --git a/tests/qemu-iotests/222.out b/tests/qemu-iotests/tests/image-fleecing.out
similarity index 100%
rename from tests/qemu-iotests/222.out
rename to tests/qemu-iotests/tests/image-fleecing.out
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 49/56] iotests.py: hmp_qemu_io: support qdev
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (47 preceding siblings ...)
2021-09-01 15:16 ` [PULL 48/56] iotests: move 222 to tests/image-fleecing Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 50/56] iotests/image-fleecing: proper source device Hanna Reitz
` (8 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20210824083856.17408-30-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/iotests.py | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 4c8971d946..11276f380a 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -696,9 +696,10 @@ def resume_drive(self, drive: str) -> None:
self.hmp(f'qemu-io {drive} "remove_break bp_{drive}"')
def hmp_qemu_io(self, drive: str, cmd: str,
- use_log: bool = False) -> QMPMessage:
+ use_log: bool = False, qdev: bool = False) -> QMPMessage:
"""Write to a given drive using an HMP command"""
- return self.hmp(f'qemu-io {drive} "{cmd}"', use_log=use_log)
+ d = '-d ' if qdev else ''
+ return self.hmp(f'qemu-io {d}{drive} "{cmd}"', use_log=use_log)
def flatten_qmp_object(self, obj, output=None, basestr=''):
if output is None:
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 50/56] iotests/image-fleecing: proper source device
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (48 preceding siblings ...)
2021-09-01 15:16 ` [PULL 49/56] iotests.py: hmp_qemu_io: support qdev Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 51/56] iotests/image-fleecing: rename tgt_node Hanna Reitz
` (7 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Define scsi device to operate with it by qom-set in further patch.
Give a new node-name to source block node, to not look like device
name.
Job now don't want to work without giving explicit id, so, let's call
it "fleecing".
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-31-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/tests/image-fleecing | 12 ++++++++----
tests/qemu-iotests/tests/image-fleecing.out | 2 +-
2 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/tests/qemu-iotests/tests/image-fleecing b/tests/qemu-iotests/tests/image-fleecing
index 799369e290..961941bb27 100755
--- a/tests/qemu-iotests/tests/image-fleecing
+++ b/tests/qemu-iotests/tests/image-fleecing
@@ -70,7 +70,11 @@ with iotests.FilePath('base.img') as base_img_path, \
log('--- Launching VM ---')
log('')
- vm.add_drive(base_img_path)
+ src_node = 'source'
+ vm.add_blockdev(f'driver={iotests.imgfmt},file.driver=file,'
+ f'file.filename={base_img_path},node-name={src_node}')
+ vm.add_device('virtio-scsi')
+ vm.add_device(f'scsi-hd,id=sda,drive={src_node}')
vm.launch()
log('Done')
@@ -78,7 +82,6 @@ with iotests.FilePath('base.img') as base_img_path, \
log('--- Setting up Fleecing Graph ---')
log('')
- src_node = 'drive0'
tgt_node = 'fleeceNode'
# create tgt_node backed by src_node
@@ -94,6 +97,7 @@ with iotests.FilePath('base.img') as base_img_path, \
# Establish COW from source to fleecing node
log(vm.qmp('blockdev-backup',
+ job_id='fleecing',
device=src_node,
target=tgt_node,
sync='none'))
@@ -125,7 +129,7 @@ with iotests.FilePath('base.img') as base_img_path, \
for p in overwrite:
cmd = 'write -P%s %s %s' % p
log(cmd)
- log(vm.hmp_qemu_io(src_node, cmd))
+ log(vm.hmp_qemu_io('/machine/peripheral/sda', cmd, qdev=True))
log('')
log('--- Verifying Data ---')
@@ -140,7 +144,7 @@ with iotests.FilePath('base.img') as base_img_path, \
log('--- Cleanup ---')
log('')
- log(vm.qmp('block-job-cancel', device=src_node))
+ log(vm.qmp('block-job-cancel', device='fleecing'))
e = vm.event_wait('BLOCK_JOB_CANCELLED')
assert e is not None
log(e, filters=[iotests.filter_qmp_event])
diff --git a/tests/qemu-iotests/tests/image-fleecing.out b/tests/qemu-iotests/tests/image-fleecing.out
index 16643dde30..314a1b54e9 100644
--- a/tests/qemu-iotests/tests/image-fleecing.out
+++ b/tests/qemu-iotests/tests/image-fleecing.out
@@ -50,7 +50,7 @@ read -P0 0x3fe0000 64k
--- Cleanup ---
{"return": {}}
-{"data": {"device": "drive0", "len": 67108864, "offset": 393216, "speed": 0, "type": "backup"}, "event": "BLOCK_JOB_CANCELLED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"device": "fleecing", "len": 67108864, "offset": 393216, "speed": 0, "type": "backup"}, "event": "BLOCK_JOB_CANCELLED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
{"return": {}}
{"return": {}}
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 51/56] iotests/image-fleecing: rename tgt_node
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (49 preceding siblings ...)
2021-09-01 15:16 ` [PULL 50/56] iotests/image-fleecing: proper source device Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 52/56] iotests/image-fleecing: prepare for adding new test-case Hanna Reitz
` (6 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Actually target of backup(sync=None) is not a final backup target:
image fleecing is intended to be used with external tool, which will
copy data from fleecing node to some real backup target.
Also, we are going to add a test case for "push backup with fleecing",
where instead of exporting fleecing node by NBD, we'll start a backup
job from fleecing node to real backup target.
To avoid confusion, let's rename temporary fleecing node now.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-32-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/tests/image-fleecing | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/tests/qemu-iotests/tests/image-fleecing b/tests/qemu-iotests/tests/image-fleecing
index 961941bb27..ec4ef5f3f6 100755
--- a/tests/qemu-iotests/tests/image-fleecing
+++ b/tests/qemu-iotests/tests/image-fleecing
@@ -71,6 +71,7 @@ with iotests.FilePath('base.img') as base_img_path, \
log('')
src_node = 'source'
+ tmp_node = 'temp'
vm.add_blockdev(f'driver={iotests.imgfmt},file.driver=file,'
f'file.filename={base_img_path},node-name={src_node}')
vm.add_device('virtio-scsi')
@@ -82,12 +83,11 @@ with iotests.FilePath('base.img') as base_img_path, \
log('--- Setting up Fleecing Graph ---')
log('')
- tgt_node = 'fleeceNode'
- # create tgt_node backed by src_node
+ # create tmp_node backed by src_node
log(vm.qmp('blockdev-add', {
'driver': 'qcow2',
- 'node-name': tgt_node,
+ 'node-name': tmp_node,
'file': {
'driver': 'file',
'filename': fleece_img_path,
@@ -99,19 +99,19 @@ with iotests.FilePath('base.img') as base_img_path, \
log(vm.qmp('blockdev-backup',
job_id='fleecing',
device=src_node,
- target=tgt_node,
+ target=tmp_node,
sync='none'))
log('')
log('--- Setting up NBD Export ---')
log('')
- nbd_uri = 'nbd+unix:///%s?socket=%s' % (tgt_node, nbd_sock_path)
+ nbd_uri = 'nbd+unix:///%s?socket=%s' % (tmp_node, nbd_sock_path)
log(vm.qmp('nbd-server-start',
{'addr': { 'type': 'unix',
'data': { 'path': nbd_sock_path } } }))
- log(vm.qmp('nbd-server-add', device=tgt_node))
+ log(vm.qmp('nbd-server-add', device=tmp_node))
log('')
log('--- Sanity Check ---')
@@ -149,7 +149,7 @@ with iotests.FilePath('base.img') as base_img_path, \
assert e is not None
log(e, filters=[iotests.filter_qmp_event])
log(vm.qmp('nbd-server-stop'))
- log(vm.qmp('blockdev-del', node_name=tgt_node))
+ log(vm.qmp('blockdev-del', node_name=tmp_node))
vm.shutdown()
log('')
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 52/56] iotests/image-fleecing: prepare for adding new test-case
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (50 preceding siblings ...)
2021-09-01 15:16 ` [PULL 51/56] iotests/image-fleecing: rename tgt_node Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 53/56] iotests/image-fleecing: add test-case for copy-before-write filter Hanna Reitz
` (5 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
We are going to add a test-case with some behavior modifications. So,
let's prepare a function to be reused.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-33-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/tests/image-fleecing | 19 +++++++++++++------
1 file changed, 13 insertions(+), 6 deletions(-)
diff --git a/tests/qemu-iotests/tests/image-fleecing b/tests/qemu-iotests/tests/image-fleecing
index ec4ef5f3f6..e210c00d28 100755
--- a/tests/qemu-iotests/tests/image-fleecing
+++ b/tests/qemu-iotests/tests/image-fleecing
@@ -48,12 +48,7 @@ remainder = [('0xd5', '0x108000', '32k'), # Right-end of partial-left [1]
('0xdc', '32M', '32k'), # Left-end of partial-right [2]
('0xcd', '0x3ff0000', '64k')] # patterns[3]
-with iotests.FilePath('base.img') as base_img_path, \
- iotests.FilePath('fleece.img') as fleece_img_path, \
- iotests.FilePath('nbd.sock',
- base_dir=iotests.sock_dir) as nbd_sock_path, \
- iotests.VM() as vm:
-
+def do_test(base_img_path, fleece_img_path, nbd_sock_path, vm):
log('--- Setting up images ---')
log('')
@@ -163,3 +158,15 @@ with iotests.FilePath('base.img') as base_img_path, \
log('')
log('Done')
+
+
+def test():
+ with iotests.FilePath('base.img') as base_img_path, \
+ iotests.FilePath('fleece.img') as fleece_img_path, \
+ iotests.FilePath('nbd.sock',
+ base_dir=iotests.sock_dir) as nbd_sock_path, \
+ iotests.VM() as vm:
+ do_test(base_img_path, fleece_img_path, nbd_sock_path, vm)
+
+
+test()
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 53/56] iotests/image-fleecing: add test-case for copy-before-write filter
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (51 preceding siblings ...)
2021-09-01 15:16 ` [PULL 52/56] iotests/image-fleecing: prepare for adding new test-case Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 54/56] block/block-copy: block_copy_state_new(): drop extra arguments Hanna Reitz
` (4 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
New fleecing method becomes available: copy-before-write filter.
Actually we don't need backup job to setup image fleecing. Add test
for new recommended way of image fleecing.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-34-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
tests/qemu-iotests/tests/image-fleecing | 50 +++++++++-----
tests/qemu-iotests/tests/image-fleecing.out | 72 +++++++++++++++++++++
2 files changed, 107 insertions(+), 15 deletions(-)
diff --git a/tests/qemu-iotests/tests/image-fleecing b/tests/qemu-iotests/tests/image-fleecing
index e210c00d28..f6318492c6 100755
--- a/tests/qemu-iotests/tests/image-fleecing
+++ b/tests/qemu-iotests/tests/image-fleecing
@@ -48,7 +48,7 @@ remainder = [('0xd5', '0x108000', '32k'), # Right-end of partial-left [1]
('0xdc', '32M', '32k'), # Left-end of partial-right [2]
('0xcd', '0x3ff0000', '64k')] # patterns[3]
-def do_test(base_img_path, fleece_img_path, nbd_sock_path, vm):
+def do_test(use_cbw, base_img_path, fleece_img_path, nbd_sock_path, vm):
log('--- Setting up images ---')
log('')
@@ -67,6 +67,7 @@ def do_test(base_img_path, fleece_img_path, nbd_sock_path, vm):
src_node = 'source'
tmp_node = 'temp'
+ qom_path = '/machine/peripheral/sda'
vm.add_blockdev(f'driver={iotests.imgfmt},file.driver=file,'
f'file.filename={base_img_path},node-name={src_node}')
vm.add_device('virtio-scsi')
@@ -90,12 +91,22 @@ def do_test(base_img_path, fleece_img_path, nbd_sock_path, vm):
'backing': src_node,
}))
- # Establish COW from source to fleecing node
- log(vm.qmp('blockdev-backup',
- job_id='fleecing',
- device=src_node,
- target=tmp_node,
- sync='none'))
+ # Establish CBW from source to fleecing node
+ if use_cbw:
+ log(vm.qmp('blockdev-add', {
+ 'driver': 'copy-before-write',
+ 'node-name': 'fl-cbw',
+ 'file': src_node,
+ 'target': tmp_node
+ }))
+
+ log(vm.qmp('qom-set', path=qom_path, property='drive', value='fl-cbw'))
+ else:
+ log(vm.qmp('blockdev-backup',
+ job_id='fleecing',
+ device=src_node,
+ target=tmp_node,
+ sync='none'))
log('')
log('--- Setting up NBD Export ---')
@@ -124,7 +135,7 @@ def do_test(base_img_path, fleece_img_path, nbd_sock_path, vm):
for p in overwrite:
cmd = 'write -P%s %s %s' % p
log(cmd)
- log(vm.hmp_qemu_io('/machine/peripheral/sda', cmd, qdev=True))
+ log(vm.hmp_qemu_io(qom_path, cmd, qdev=True))
log('')
log('--- Verifying Data ---')
@@ -139,10 +150,15 @@ def do_test(base_img_path, fleece_img_path, nbd_sock_path, vm):
log('--- Cleanup ---')
log('')
- log(vm.qmp('block-job-cancel', device='fleecing'))
- e = vm.event_wait('BLOCK_JOB_CANCELLED')
- assert e is not None
- log(e, filters=[iotests.filter_qmp_event])
+ if use_cbw:
+ log(vm.qmp('qom-set', path=qom_path, property='drive', value=src_node))
+ log(vm.qmp('blockdev-del', node_name='fl-cbw'))
+ else:
+ log(vm.qmp('block-job-cancel', device='fleecing'))
+ e = vm.event_wait('BLOCK_JOB_CANCELLED')
+ assert e is not None
+ log(e, filters=[iotests.filter_qmp_event])
+
log(vm.qmp('nbd-server-stop'))
log(vm.qmp('blockdev-del', node_name=tmp_node))
vm.shutdown()
@@ -160,13 +176,17 @@ def do_test(base_img_path, fleece_img_path, nbd_sock_path, vm):
log('Done')
-def test():
+def test(use_cbw):
with iotests.FilePath('base.img') as base_img_path, \
iotests.FilePath('fleece.img') as fleece_img_path, \
iotests.FilePath('nbd.sock',
base_dir=iotests.sock_dir) as nbd_sock_path, \
iotests.VM() as vm:
- do_test(base_img_path, fleece_img_path, nbd_sock_path, vm)
+ do_test(use_cbw, base_img_path, fleece_img_path, nbd_sock_path, vm)
+
+log('=== Test backup(sync=none) based fleecing ===\n')
+test(False)
-test()
+log('=== Test filter based fleecing ===\n')
+test(True)
diff --git a/tests/qemu-iotests/tests/image-fleecing.out b/tests/qemu-iotests/tests/image-fleecing.out
index 314a1b54e9..e96d122a8b 100644
--- a/tests/qemu-iotests/tests/image-fleecing.out
+++ b/tests/qemu-iotests/tests/image-fleecing.out
@@ -1,3 +1,5 @@
+=== Test backup(sync=none) based fleecing ===
+
--- Setting up images ---
Done
@@ -65,3 +67,73 @@ read -P0xdc 32M 32k
read -P0xcd 0x3ff0000 64k
Done
+=== Test filter based fleecing ===
+
+--- Setting up images ---
+
+Done
+
+--- Launching VM ---
+
+Done
+
+--- Setting up Fleecing Graph ---
+
+{"return": {}}
+{"return": {}}
+{"return": {}}
+
+--- Setting up NBD Export ---
+
+{"return": {}}
+{"return": {}}
+
+--- Sanity Check ---
+
+read -P0x5d 0 64k
+read -P0xd5 1M 64k
+read -P0xdc 32M 64k
+read -P0xcd 0x3ff0000 64k
+read -P0 0x00f8000 32k
+read -P0 0x2010000 32k
+read -P0 0x3fe0000 64k
+
+--- Testing COW ---
+
+write -P0xab 0 64k
+{"return": ""}
+write -P0xad 0x00f8000 64k
+{"return": ""}
+write -P0x1d 0x2008000 64k
+{"return": ""}
+write -P0xea 0x3fe0000 64k
+{"return": ""}
+
+--- Verifying Data ---
+
+read -P0x5d 0 64k
+read -P0xd5 1M 64k
+read -P0xdc 32M 64k
+read -P0xcd 0x3ff0000 64k
+read -P0 0x00f8000 32k
+read -P0 0x2010000 32k
+read -P0 0x3fe0000 64k
+
+--- Cleanup ---
+
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+
+--- Confirming writes ---
+
+read -P0xab 0 64k
+read -P0xad 0x00f8000 64k
+read -P0x1d 0x2008000 64k
+read -P0xea 0x3fe0000 64k
+read -P0xd5 0x108000 32k
+read -P0xdc 32M 32k
+read -P0xcd 0x3ff0000 64k
+
+Done
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 54/56] block/block-copy: block_copy_state_new(): drop extra arguments
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (52 preceding siblings ...)
2021-09-01 15:16 ` [PULL 53/56] iotests/image-fleecing: add test-case for copy-before-write filter Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 55/56] block/export/fuse.c: fix fuse-lseek on uclibc or musl Hanna Reitz
` (3 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
The only caller pass copy_range and compress both false. Let's just
drop these arguments.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210824083856.17408-35-vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
include/block/block-copy.h | 1 -
block/block-copy.c | 5 ++---
block/copy-before-write.c | 2 +-
3 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/include/block/block-copy.h b/include/block/block-copy.h
index b8a2d63545..99370fa38b 100644
--- a/include/block/block-copy.h
+++ b/include/block/block-copy.h
@@ -25,7 +25,6 @@ typedef struct BlockCopyState BlockCopyState;
typedef struct BlockCopyCallState BlockCopyCallState;
BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
- bool use_copy_range, bool compress,
Error **errp);
/* Function should be called prior any actual copy request */
diff --git a/block/block-copy.c b/block/block-copy.c
index 443261e4e4..ce116318b5 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -384,8 +384,7 @@ static int64_t block_copy_calculate_cluster_size(BlockDriverState *target,
}
BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
- bool use_copy_range,
- bool compress, Error **errp)
+ Error **errp)
{
BlockCopyState *s;
int64_t cluster_size;
@@ -434,7 +433,7 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
cluster_size),
};
- block_copy_set_copy_opts(s, use_copy_range, compress);
+ block_copy_set_copy_opts(s, false, false);
ratelimit_init(&s->rate_limit);
qemu_co_mutex_init(&s->lock);
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 2cd68b480a..2a5e57deca 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -170,7 +170,7 @@ static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
bs->file->bs->supported_zero_flags);
- s->bcs = block_copy_state_new(bs->file, s->target, false, false, errp);
+ s->bcs = block_copy_state_new(bs->file, s->target, errp);
if (!s->bcs) {
error_prepend(errp, "Cannot create block-copy-state: ");
return -EINVAL;
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 55/56] block/export/fuse.c: fix fuse-lseek on uclibc or musl
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (53 preceding siblings ...)
2021-09-01 15:16 ` [PULL 54/56] block/block-copy: block_copy_state_new(): drop extra arguments Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-01 15:16 ` [PULL 56/56] block/file-win32: add reopen handlers Hanna Reitz
` (2 subsequent siblings)
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Include linux/fs.h to avoid the following build failure on uclibc or
musl raised since version 6.0.0:
../block/export/fuse.c: In function 'fuse_lseek':
../block/export/fuse.c:641:19: error: 'SEEK_HOLE' undeclared (first use in this function)
641 | if (whence != SEEK_HOLE && whence != SEEK_DATA) {
| ^~~~~~~~~
../block/export/fuse.c:641:19: note: each undeclared identifier is reported only once for each function it appears in
../block/export/fuse.c:641:42: error: 'SEEK_DATA' undeclared (first use in this function); did you mean 'SEEK_SET'?
641 | if (whence != SEEK_HOLE && whence != SEEK_DATA) {
| ^~~~~~~~~
| SEEK_SET
Fixes:
- http://autobuild.buildroot.org/results/33c90ebf04997f4d3557cfa66abc9cf9a3076137
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Message-Id: <20210827220301.272887-1-fontaine.fabrice@gmail.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/export/fuse.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/block/export/fuse.c b/block/export/fuse.c
index fc7b07d2b5..2e3bf8270b 100644
--- a/block/export/fuse.c
+++ b/block/export/fuse.c
@@ -31,6 +31,9 @@
#include <fuse.h>
#include <fuse_lowlevel.h>
+#ifdef __linux__
+#include <linux/fs.h>
+#endif
/* Prevent overly long bounce buffer allocations */
#define FUSE_MAX_BOUNCE_BYTES (MIN(BDRV_REQUEST_MAX_BYTES, 64 * 1024 * 1024))
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* [PULL 56/56] block/file-win32: add reopen handlers
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (54 preceding siblings ...)
2021-09-01 15:16 ` [PULL 55/56] block/export/fuse.c: fix fuse-lseek on uclibc or musl Hanna Reitz
@ 2021-09-01 15:16 ` Hanna Reitz
2021-09-02 11:07 ` [PULL 00/56] Block patches Peter Maydell
2021-09-02 13:56 ` Peter Maydell
57 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-01 15:16 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Peter Maydell, Hanna Reitz, qemu-devel
From: Viktor Prutyanov <viktor.prutyanov@phystech.edu>
Make 'qemu-img commit' work on Windows.
Command 'commit' requires reopening backing file in RW mode. So,
add reopen prepare/commit/abort handlers and change dwShareMode
for CreateFile call in order to allow further read/write reopening.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/418
Suggested-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Viktor Prutyanov <viktor.prutyanov@phystech.edu>
Tested-by: Helge Konetzka <hk@zapateado.de>
Message-Id: <20210825173625.19415-1-viktor.prutyanov@phystech.edu>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
block/file-win32.c | 101 ++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 100 insertions(+), 1 deletion(-)
diff --git a/block/file-win32.c b/block/file-win32.c
index 2642088bd6..b97c58d642 100644
--- a/block/file-win32.c
+++ b/block/file-win32.c
@@ -58,6 +58,10 @@ typedef struct BDRVRawState {
QEMUWin32AIOState *aio;
} BDRVRawState;
+typedef struct BDRVRawReopenState {
+ HANDLE hfile;
+} BDRVRawReopenState;
+
/*
* Read/writes the data to/from a given linear buffer.
*
@@ -392,7 +396,7 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags,
}
s->hfile = CreateFile(filename, access_flags,
- FILE_SHARE_READ, NULL,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, overlapped, NULL);
if (s->hfile == INVALID_HANDLE_VALUE) {
int err = GetLastError();
@@ -634,6 +638,97 @@ static int coroutine_fn raw_co_create_opts(BlockDriver *drv,
return raw_co_create(&options, errp);
}
+static int raw_reopen_prepare(BDRVReopenState *state,
+ BlockReopenQueue *queue, Error **errp)
+{
+ BDRVRawState *s = state->bs->opaque;
+ BDRVRawReopenState *rs;
+ int access_flags;
+ DWORD overlapped;
+ int ret = 0;
+
+ if (s->type != FTYPE_FILE) {
+ error_setg(errp, "Can only reopen files");
+ return -EINVAL;
+ }
+
+ rs = g_new0(BDRVRawReopenState, 1);
+
+ /*
+ * We do not support changing any options (only flags). By leaving
+ * all options in state->options, we tell the generic reopen code
+ * that we do not support changing any of them, so it will verify
+ * that their values did not change.
+ */
+
+ raw_parse_flags(state->flags, s->aio != NULL, &access_flags, &overlapped);
+ rs->hfile = CreateFile(state->bs->filename, access_flags,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+ OPEN_EXISTING, overlapped, NULL);
+
+ if (rs->hfile == INVALID_HANDLE_VALUE) {
+ int err = GetLastError();
+
+ error_setg_win32(errp, err, "Could not reopen '%s'",
+ state->bs->filename);
+ if (err == ERROR_ACCESS_DENIED) {
+ ret = -EACCES;
+ } else {
+ ret = -EINVAL;
+ }
+ goto fail;
+ }
+
+ if (s->aio) {
+ ret = win32_aio_attach(s->aio, rs->hfile);
+ if (ret < 0) {
+ error_setg_errno(errp, -ret, "Could not enable AIO");
+ CloseHandle(rs->hfile);
+ goto fail;
+ }
+ }
+
+ state->opaque = rs;
+
+ return 0;
+
+fail:
+ g_free(rs);
+ state->opaque = NULL;
+
+ return ret;
+}
+
+static void raw_reopen_commit(BDRVReopenState *state)
+{
+ BDRVRawState *s = state->bs->opaque;
+ BDRVRawReopenState *rs = state->opaque;
+
+ assert(rs != NULL);
+
+ CloseHandle(s->hfile);
+ s->hfile = rs->hfile;
+
+ g_free(rs);
+ state->opaque = NULL;
+}
+
+static void raw_reopen_abort(BDRVReopenState *state)
+{
+ BDRVRawReopenState *rs = state->opaque;
+
+ if (!rs) {
+ return;
+ }
+
+ if (rs->hfile != INVALID_HANDLE_VALUE) {
+ CloseHandle(rs->hfile);
+ }
+
+ g_free(rs);
+ state->opaque = NULL;
+}
+
static QemuOptsList raw_create_opts = {
.name = "raw-create-opts",
.head = QTAILQ_HEAD_INITIALIZER(raw_create_opts.head),
@@ -659,6 +754,10 @@ BlockDriver bdrv_file = {
.bdrv_co_create_opts = raw_co_create_opts,
.bdrv_has_zero_init = bdrv_has_zero_init_1,
+ .bdrv_reopen_prepare = raw_reopen_prepare,
+ .bdrv_reopen_commit = raw_reopen_commit,
+ .bdrv_reopen_abort = raw_reopen_abort,
+
.bdrv_aio_preadv = raw_aio_preadv,
.bdrv_aio_pwritev = raw_aio_pwritev,
.bdrv_aio_flush = raw_aio_flush,
--
2.31.1
^ permalink raw reply related [flat|nested] 62+ messages in thread* Re: [PULL 00/56] Block patches
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (55 preceding siblings ...)
2021-09-01 15:16 ` [PULL 56/56] block/file-win32: add reopen handlers Hanna Reitz
@ 2021-09-02 11:07 ` Peter Maydell
2021-09-02 11:21 ` Hanna Reitz
2021-09-02 13:56 ` Peter Maydell
57 siblings, 1 reply; 62+ messages in thread
From: Peter Maydell @ 2021-09-02 11:07 UTC (permalink / raw)
To: Hanna Reitz; +Cc: Kevin Wolf, QEMU Developers, Qemu-block
On Wed, 1 Sept 2021 at 16:16, Hanna Reitz <hreitz@redhat.com> wrote:
>
> The following changes since commit ec397e90d21269037280633b6058d1f280e27667:
>
> Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20210901-2' into staging (2021-09-01 08:33:02 +0100)
>
> are available in the Git repository at:
>
> https://github.com/XanClic/qemu.git tags/pull-block-2021-09-01
>
> for you to fetch changes up to ebd979c74e2b8a7275090475df36dde4ab858320:
>
> block/file-win32: add reopen handlers (2021-09-01 14:38:08 +0200)
>
>
> **Note:** I’ve signed the pull request tag with my new GPG key, which I
> have uploaded here:
>
> https://xanclic.moe/A1FA40D098019CDF
Hi. Unfortunately my employer's internet setup blocks access to
that site :-(
> (I’ve also tried uploading this key to several keyservers, but it
> appears to me that keyservers are kind of a thing of the past now,
> especially when it comes to uploading keys with signatures on them...)
IME keyserver.ubuntu.com is still functional.
thanks
-- PMM
^ permalink raw reply [flat|nested] 62+ messages in thread* Re: [PULL 00/56] Block patches
2021-09-02 11:07 ` [PULL 00/56] Block patches Peter Maydell
@ 2021-09-02 11:21 ` Hanna Reitz
0 siblings, 0 replies; 62+ messages in thread
From: Hanna Reitz @ 2021-09-02 11:21 UTC (permalink / raw)
To: Peter Maydell; +Cc: Kevin Wolf, QEMU Developers, Qemu-block
[-- Attachment #1: Type: text/plain, Size: 1477 bytes --]
On 02.09.21 13:07, Peter Maydell wrote:
> On Wed, 1 Sept 2021 at 16:16, Hanna Reitz <hreitz@redhat.com> wrote:
>> The following changes since commit ec397e90d21269037280633b6058d1f280e27667:
>>
>> Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20210901-2' into staging (2021-09-01 08:33:02 +0100)
>>
>> are available in the Git repository at:
>>
>> https://github.com/XanClic/qemu.git tags/pull-block-2021-09-01
>>
>> for you to fetch changes up to ebd979c74e2b8a7275090475df36dde4ab858320:
>>
>> block/file-win32: add reopen handlers (2021-09-01 14:38:08 +0200)
>>
>>
>> **Note:** I’ve signed the pull request tag with my new GPG key, which I
>> have uploaded here:
>>
>> https://xanclic.moe/A1FA40D098019CDF
> Hi. Unfortunately my employer's internet setup blocks access to
> that site :-(
That’s too bad. :(
(Perhaps it works by IP? http://159.69.123.47:8080/A1FA40D098019CDF)
But I think it’s small enough that I can just attach it to this mail
(which I’ve done).
>> (I’ve also tried uploading this key to several keyservers, but it
>> appears to me that keyservers are kind of a thing of the past now,
>> especially when it comes to uploading keys with signatures on them...)
> IME keyserver.ubuntu.com is still functional.
Yes, I’ve uploaded it there, too:
https://keyserver.ubuntu.com/pks/lookup?search=hreitz%40redhat.com&fingerprint=on&op=index
And it looks like that indeed it has capture my signature.
Hanna
[-- Attachment #2: A1FA40D098019CDF --]
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^ permalink raw reply [flat|nested] 62+ messages in thread
* Re: [PULL 00/56] Block patches
2021-09-01 15:15 [PULL 00/56] Block patches Hanna Reitz
` (56 preceding siblings ...)
2021-09-02 11:07 ` [PULL 00/56] Block patches Peter Maydell
@ 2021-09-02 13:56 ` Peter Maydell
57 siblings, 0 replies; 62+ messages in thread
From: Peter Maydell @ 2021-09-02 13:56 UTC (permalink / raw)
To: Hanna Reitz; +Cc: Kevin Wolf, QEMU Developers, Qemu-block
On Wed, 1 Sept 2021 at 16:16, Hanna Reitz <hreitz@redhat.com> wrote:
>
> The following changes since commit ec397e90d21269037280633b6058d1f280e27667:
>
> Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20210901-2' into staging (2021-09-01 08:33:02 +0100)
>
> are available in the Git repository at:
>
> https://github.com/XanClic/qemu.git tags/pull-block-2021-09-01
>
> for you to fetch changes up to ebd979c74e2b8a7275090475df36dde4ab858320:
>
> block/file-win32: add reopen handlers (2021-09-01 14:38:08 +0200)
>
>
> **Note:** I’ve signed the pull request tag with my new GPG key, which I
> have uploaded here:
>
> https://xanclic.moe/A1FA40D098019CDF
>
> Included in that key should be the signature I made with my old key
> (F407DB0061D5CF40), and I hope that’s sufficient to establish a
> reasonable level of trust.
>
> (I’ve also tried uploading this key to several keyservers, but it
> appears to me that keyservers are kind of a thing of the past now,
> especially when it comes to uploading keys with signatures on them...)
>
> ----------------------------------------------------------------
> Block patches:
> - Make the backup-top filter driver available for user-created block
> nodes (i.e. via blockdev-add)
> - Allow running iotests with gdb or valgrind being attached to qemu
> instances
> - Fix the raw format driver's permissions: There is no metadata, so we
> only need WRITE or RESIZE when the parent needs it
> - Basic reopen implementation for win32 files (file-win32.c) so that
> qemu-img commit can work
> - uclibc/musl build fix for the FUSE export code
> - Some iotests delinting
> - block-hmp-cmds.c refactoring
>
Applied, thanks.
Please update the changelog at https://wiki.qemu.org/ChangeLog/6.2
for any user-visible changes.
-- PMM
^ permalink raw reply [flat|nested] 62+ messages in thread