diff options
| -rw-r--r-- | balloon.c | 2 | ||||
| -rw-r--r-- | block.c | 35 | ||||
| -rw-r--r-- | block/stream.c | 22 | ||||
| -rw-r--r-- | block_int.h | 19 | ||||
| -rw-r--r-- | blockdev.c | 26 | ||||
| -rw-r--r-- | hmp-commands.hx | 8 | ||||
| -rw-r--r-- | hmp.c | 4 | ||||
| -rw-r--r-- | qapi-schema.json | 12 | ||||
| -rw-r--r-- | qmp-commands.hx | 4 | ||||
| -rwxr-xr-x | tests/qemu-iotests/030 | 85 | ||||
| -rw-r--r-- | tests/qemu-iotests/030.out | 4 |
11 files changed, 151 insertions, 70 deletions
diff --git a/balloon.c b/balloon.c index 0166744aa8..aa354f7554 100644 --- a/balloon.c +++ b/balloon.c @@ -108,7 +108,7 @@ void qmp_balloon(int64_t value, Error **errp) } if (value <= 0) { - qerror_report(QERR_INVALID_PARAMETER_VALUE, "target", "a size"); + error_set(errp, QERR_INVALID_PARAMETER_VALUE, "target", "a size"); return; } diff --git a/block.c b/block.c index fe74dddb13..43c794c4d7 100644 --- a/block.c +++ b/block.c @@ -4083,11 +4083,13 @@ out: } void *block_job_create(const BlockJobType *job_type, BlockDriverState *bs, - BlockDriverCompletionFunc *cb, void *opaque) + int64_t speed, BlockDriverCompletionFunc *cb, + void *opaque, Error **errp) { BlockJob *job; if (bs->job || bdrv_in_use(bs)) { + error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); return NULL; } bdrv_set_in_use(bs, 1); @@ -4098,6 +4100,20 @@ void *block_job_create(const BlockJobType *job_type, BlockDriverState *bs, job->cb = cb; job->opaque = opaque; bs->job = job; + + /* Only set speed when necessary to avoid NotSupported error */ + if (speed != 0) { + Error *local_err = NULL; + + block_job_set_speed(job, speed, &local_err); + if (error_is_set(&local_err)) { + bs->job = NULL; + g_free(job); + bdrv_set_in_use(bs, 0); + error_propagate(errp, local_err); + return NULL; + } + } return job; } @@ -4112,18 +4128,21 @@ void block_job_complete(BlockJob *job, int ret) bdrv_set_in_use(bs, 0); } -int block_job_set_speed(BlockJob *job, int64_t value) +void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) { - int rc; + Error *local_err = NULL; if (!job->job_type->set_speed) { - return -ENOTSUP; + error_set(errp, QERR_NOT_SUPPORTED); + return; } - rc = job->job_type->set_speed(job, value); - if (rc == 0) { - job->speed = value; + job->job_type->set_speed(job, speed, &local_err); + if (error_is_set(&local_err)) { + error_propagate(errp, local_err); + return; } - return rc; + + job->speed = speed; } void block_job_cancel(BlockJob *job) diff --git a/block/stream.c b/block/stream.c index 0efe1adfd5..6724af2764 100644 --- a/block/stream.c +++ b/block/stream.c @@ -263,15 +263,15 @@ retry: block_job_complete(&s->common, ret); } -static int stream_set_speed(BlockJob *job, int64_t value) +static void stream_set_speed(BlockJob *job, int64_t speed, Error **errp) { StreamBlockJob *s = container_of(job, StreamBlockJob, common); - if (value < 0) { - return -EINVAL; + if (speed < 0) { + error_set(errp, QERR_INVALID_PARAMETER, "speed"); + return; } - ratelimit_set_speed(&s->limit, value / BDRV_SECTOR_SIZE); - return 0; + ratelimit_set_speed(&s->limit, speed / BDRV_SECTOR_SIZE); } static BlockJobType stream_job_type = { @@ -280,16 +280,17 @@ static BlockJobType stream_job_type = { .set_speed = stream_set_speed, }; -int stream_start(BlockDriverState *bs, BlockDriverState *base, - const char *base_id, BlockDriverCompletionFunc *cb, - void *opaque) +void stream_start(BlockDriverState *bs, BlockDriverState *base, + const char *base_id, int64_t speed, + BlockDriverCompletionFunc *cb, + void *opaque, Error **errp) { StreamBlockJob *s; Coroutine *co; - s = block_job_create(&stream_job_type, bs, cb, opaque); + s = block_job_create(&stream_job_type, bs, speed, cb, opaque, errp); if (!s) { - return -EBUSY; /* bs must already be in use */ + return; } s->base = base; @@ -300,5 +301,4 @@ int stream_start(BlockDriverState *bs, BlockDriverState *base, co = qemu_coroutine_create(stream_run); trace_stream_start(bs, base, s, co, opaque); qemu_coroutine_enter(co, s); - return 0; } diff --git a/block_int.h b/block_int.h index 0acb49f100..086832aab9 100644 --- a/block_int.h +++ b/block_int.h @@ -79,7 +79,7 @@ typedef struct BlockJobType { const char *job_type; /** Optional callback for job types that support setting a speed limit */ - int (*set_speed)(BlockJob *job, int64_t value); + void (*set_speed)(BlockJob *job, int64_t speed, Error **errp); } BlockJobType; /** @@ -344,8 +344,10 @@ int is_windows_drive(const char *filename); * block_job_create: * @job_type: The class object for the newly-created job. * @bs: The block + * @speed: The maximum speed, in bytes per second, or 0 for unlimited. * @cb: Completion function for the job. * @opaque: Opaque pointer value passed to @cb. + * @errp: Error object. * * Create a new long-running block device job and return it. The job * will call @cb asynchronously when the job completes. Note that @@ -357,7 +359,8 @@ int is_windows_drive(const char *filename); * called from a wrapper that is specific to the job type. */ void *block_job_create(const BlockJobType *job_type, BlockDriverState *bs, - BlockDriverCompletionFunc *cb, void *opaque); + int64_t speed, BlockDriverCompletionFunc *cb, + void *opaque, Error **errp); /** * block_job_complete: @@ -373,11 +376,12 @@ void block_job_complete(BlockJob *job, int ret); * block_job_set_speed: * @job: The job to set the speed for. * @speed: The new value + * @errp: Error object. * * Set a rate-limiting parameter for the job; the actual meaning may * vary depending on the job type. */ -int block_job_set_speed(BlockJob *job, int64_t value); +void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp); /** * block_job_cancel: @@ -415,8 +419,10 @@ void block_job_cancel_sync(BlockJob *job); * flatten the whole backing file chain onto @bs. * @base_id: The file name that will be written to @bs as the new * backing file if the job completes. Ignored if @base is %NULL. + * @speed: The maximum speed, in bytes per second, or 0 for unlimited. * @cb: Completion function for the job. * @opaque: Opaque pointer value passed to @cb. + * @errp: Error object. * * Start a streaming operation on @bs. Clusters that are unallocated * in @bs, but allocated in any image between @base and @bs (both @@ -424,8 +430,9 @@ void block_job_cancel_sync(BlockJob *job); * streaming job, the backing file of @bs will be changed to * @base_id in the written image and to @base in the live BlockDriverState. */ -int stream_start(BlockDriverState *bs, BlockDriverState *base, - const char *base_id, BlockDriverCompletionFunc *cb, - void *opaque); +void stream_start(BlockDriverState *bs, BlockDriverState *base, + const char *base_id, int64_t speed, + BlockDriverCompletionFunc *cb, + void *opaque, Error **errp); #endif /* BLOCK_INT_H */ diff --git a/blockdev.c b/blockdev.c index 0c2440e249..d25ffea926 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1091,11 +1091,12 @@ static void block_stream_cb(void *opaque, int ret) } void qmp_block_stream(const char *device, bool has_base, - const char *base, Error **errp) + const char *base, bool has_speed, + int64_t speed, Error **errp) { BlockDriverState *bs; BlockDriverState *base_bs = NULL; - int ret; + Error *local_err = NULL; bs = bdrv_find(device); if (!bs) { @@ -1111,16 +1112,11 @@ void qmp_block_stream(const char *device, bool has_base, } } - ret = stream_start(bs, base_bs, base, block_stream_cb, bs); - if (ret < 0) { - switch (ret) { - case -EBUSY: - error_set(errp, QERR_DEVICE_IN_USE, device); - return; - default: - error_set(errp, QERR_NOT_SUPPORTED); - return; - } + stream_start(bs, base_bs, base, has_speed ? speed : 0, + block_stream_cb, bs, &local_err); + if (error_is_set(&local_err)) { + error_propagate(errp, local_err); + return; } /* Grab a reference so hotplug does not delete the BlockDriverState from @@ -1142,7 +1138,7 @@ static BlockJob *find_block_job(const char *device) return bs->job; } -void qmp_block_job_set_speed(const char *device, int64_t value, Error **errp) +void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) { BlockJob *job = find_block_job(device); @@ -1151,9 +1147,7 @@ void qmp_block_job_set_speed(const char *device, int64_t value, Error **errp) return; } - if (block_job_set_speed(job, value) < 0) { - error_set(errp, QERR_NOT_SUPPORTED); - } + block_job_set_speed(job, speed, errp); } void qmp_block_job_cancel(const char *device, Error **errp) diff --git a/hmp-commands.hx b/hmp-commands.hx index 461fa597d4..18cb415ac4 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -71,8 +71,8 @@ ETEXI { .name = "block_stream", - .args_type = "device:B,base:s?", - .params = "device [base]", + .args_type = "device:B,speed:o?,base:s?", + .params = "device [speed [base]]", .help = "copy data from a backing file into a block device", .mhandler.cmd = hmp_block_stream, }, @@ -85,8 +85,8 @@ ETEXI { .name = "block_job_set_speed", - .args_type = "device:B,value:o", - .params = "device value", + .args_type = "device:B,speed:o", + .params = "device speed", .help = "set maximum speed for a background block operation", .mhandler.cmd = hmp_block_job_set_speed, }, diff --git a/hmp.c b/hmp.c index f3e5163f1e..eb96618e1e 100644 --- a/hmp.c +++ b/hmp.c @@ -835,8 +835,10 @@ void hmp_block_stream(Monitor *mon, const QDict *qdict) Error *error = NULL; const char *device = qdict_get_str(qdict, "device"); const char *base = qdict_get_try_str(qdict, "base"); + int64_t speed = qdict_get_try_int(qdict, "speed", 0); - qmp_block_stream(device, base != NULL, base, &error); + qmp_block_stream(device, base != NULL, base, + qdict_haskey(qdict, "speed"), speed, &error); hmp_handle_error(mon, &error); } diff --git a/qapi-schema.json b/qapi-schema.json index 64998959db..9193fb9968 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -1571,15 +1571,19 @@ # # @base: #optional the common backing file name # +# @speed: #optional the maximum speed, in bytes per second +# # Returns: Nothing on success # If streaming is already active on this device, DeviceInUse # If @device does not exist, DeviceNotFound # If image streaming is not supported by this device, NotSupported # If @base does not exist, BaseNotFound +# If @speed is invalid, InvalidParameter # # Since: 1.1 ## -{ 'command': 'block-stream', 'data': { 'device': 'str', '*base': 'str' } } +{ 'command': 'block-stream', 'data': { 'device': 'str', '*base': 'str', + '*speed': 'int' } } ## # @block-job-set-speed: @@ -1592,16 +1596,18 @@ # # @device: the device name # -# @value: the maximum speed, in bytes per second +# @speed: the maximum speed, in bytes per second, or 0 for unlimited. +# Defaults to 0. # # Returns: Nothing on success # If the job type does not support throttling, NotSupported +# If the speed value is invalid, InvalidParameter # If streaming is not active on this device, DeviceNotActive # # Since: 1.1 ## { 'command': 'block-job-set-speed', - 'data': { 'device': 'str', 'value': 'int' } } + 'data': { 'device': 'str', 'speed': 'int' } } ## # @block-job-cancel: diff --git a/qmp-commands.hx b/qmp-commands.hx index f97233223d..c810c74c11 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -688,13 +688,13 @@ EQMP { .name = "block-stream", - .args_type = "device:B,base:s?", + .args_type = "device:B,base:s?,speed:o?", .mhandler.cmd_new = qmp_marshal_input_block_stream, }, { .name = "block-job-set-speed", - .args_type = "device:B,value:o", + .args_type = "device:B,speed:o", .mhandler.cmd_new = qmp_marshal_input_block_job_set_speed, }, diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030 index 978fd82224..38abc2ce77 100755 --- a/tests/qemu-iotests/030 +++ b/tests/qemu-iotests/030 @@ -32,6 +32,21 @@ class ImageStreamingTestCase(iotests.QMPTestCase): result = self.vm.qmp('query-block-jobs') self.assert_qmp(result, 'return', []) + def cancel_and_wait(self, drive='drive0'): + '''Cancel a block job and wait for it to finish''' + result = self.vm.qmp('block-job-cancel', device=drive) + self.assert_qmp(result, 'return', {}) + + cancelled = False + while not cancelled: + for event in self.vm.get_qmp_events(wait=True): + if event['event'] == 'BLOCK_JOB_CANCELLED': + self.assert_qmp(event, 'data/type', 'stream') + self.assert_qmp(event, 'data/device', drive) + cancelled = True + + self.assert_no_active_streams() + class TestSingleDrive(ImageStreamingTestCase): image_len = 1 * 1024 * 1024 # MB @@ -97,21 +112,8 @@ class TestStreamStop(ImageStreamingTestCase): events = self.vm.get_qmp_events(wait=False) self.assertEqual(events, [], 'unexpected QMP event: %s' % events) - self.vm.qmp('block-job-cancel', device='drive0') - self.assert_qmp(result, 'return', {}) + self.cancel_and_wait() - cancelled = False - while not cancelled: - for event in self.vm.get_qmp_events(wait=True): - if event['event'] == 'BLOCK_JOB_CANCELLED': - self.assert_qmp(event, 'data/type', 'stream') - self.assert_qmp(event, 'data/device', 'drive0') - cancelled = True - - self.assert_no_active_streams() - -# This is a short performance test which is not run by default. -# Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_set_speed" class TestSetSpeed(ImageStreamingTestCase): image_len = 80 * 1024 * 1024 # MB @@ -126,13 +128,15 @@ class TestSetSpeed(ImageStreamingTestCase): os.remove(test_img) os.remove(backing_img) - def perf_test_set_speed(self): + # This is a short performance test which is not run by default. + # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput" + def perf_test_throughput(self): self.assert_no_active_streams() result = self.vm.qmp('block-stream', device='drive0') self.assert_qmp(result, 'return', {}) - result = self.vm.qmp('block-job-set-speed', device='drive0', value=8 * 1024 * 1024) + result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) self.assert_qmp(result, 'return', {}) completed = False @@ -147,5 +151,54 @@ class TestSetSpeed(ImageStreamingTestCase): self.assert_no_active_streams() + def test_set_speed(self): + self.assert_no_active_streams() + + result = self.vm.qmp('block-stream', device='drive0') + self.assert_qmp(result, 'return', {}) + + # Default speed is 0 + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/device', 'drive0') + self.assert_qmp(result, 'return[0]/speed', 0) + + result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) + self.assert_qmp(result, 'return', {}) + + # Ensure the speed we set was accepted + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/device', 'drive0') + self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) + + self.cancel_and_wait() + + # Check setting speed in block-stream works + result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024) + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/device', 'drive0') + self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) + + self.cancel_and_wait() + + def test_set_speed_invalid(self): + self.assert_no_active_streams() + + result = self.vm.qmp('block-stream', device='drive0', speed=-1) + self.assert_qmp(result, 'error/class', 'InvalidParameter') + self.assert_qmp(result, 'error/data/name', 'speed') + + self.assert_no_active_streams() + + result = self.vm.qmp('block-stream', device='drive0') + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) + self.assert_qmp(result, 'error/class', 'InvalidParameter') + self.assert_qmp(result, 'error/data/name', 'speed') + + self.cancel_and_wait() + if __name__ == '__main__': iotests.main(supported_fmts=['qcow2', 'qed']) diff --git a/tests/qemu-iotests/030.out b/tests/qemu-iotests/030.out index 8d7e996700..914e3737bd 100644 --- a/tests/qemu-iotests/030.out +++ b/tests/qemu-iotests/030.out @@ -1,5 +1,5 @@ -... +..... ---------------------------------------------------------------------- -Ran 3 tests +Ran 5 tests OK |