Python support for both setting and getting block I/O throttle.
Signed-off-by: Lei Li <lilei@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Zhi Yong Wu <wuzhy@xxxxxxxxxxxxxxxxxx>
---
python/generator.py | 2 +
python/libvirt-override-api.xml | 16 ++++
python/libvirt-override.c | 178 +++++++++++++++++++++++++++++++++++++++
3 files changed, 196 insertions(+), 0 deletions(-)
diff --git a/python/generator.py b/python/generator.py
index 71afdb7..88c52b9 100755
--- a/python/generator.py
+++ b/python/generator.py
@@ -414,6 +414,8 @@ skip_impl = (
'virDomainGetBlockJobInfo',
'virDomainMigrateGetMaxSpeed',
'virDomainBlockStatsFlags',
+ 'virDomainSetBlockIoTune',
+ 'virDomainGetBlockIoTune',
)
qemu_skip_impl = (
diff --git a/python/libvirt-override-api.xml b/python/libvirt-override-api.xml
index ef02f34..a05da3c 100644
--- a/python/libvirt-override-api.xml
+++ b/python/libvirt-override-api.xml
@@ -375,5 +375,21 @@
<arg name='flags' type='unsigned int' info='flags, currently unused, pass 0.'/>
<return type='unsigned long' info='current max migration speed, or None in case of error'/>
</function>
+ <function name='virDomainSetBlockIoTune' file='python'>
+ <info>Change the I/O throttle for a block device</info>
+ <arg name='dom' type='virDomainPtr' info='pointer to the domain'/>
+ <arg name='disk' type='const char *' info='disk name'/>
+ <arg name='params' type='virTypedParameterPtr' info='Pointer to blkio throttle params object'/>
+ <arg name='flags' type='unsigned int' info='an OR'ed set of virDomainModificationImpact'/>
+ <return type='int' info='0 in case of success, -1 in case of failure'/>
+ </function>
+ <function name='virDomainGetBlockIoTune' file='python'>
+ <info>Get the I/O throttle a block device</info>
+ <arg name='dom' type='virDomainPtr' info='pointer to the domain'/>
+ <arg name='disk' type='const char *' info='disk name'/>
+ <arg name='params' type='virTypedParameterPtr' info='Pointer to blkio throttle params object'/>
+ <arg name='flags' type='unsigned int' info='an OR'ed set of virDomainModificationImpact'/>
+ <return type='int' info='0 in case of success, -1 in case of failure'/>
+ </function>
</symbols>
</api>
diff --git a/python/libvirt-override.c b/python/libvirt-override.c
index 1759bae..be76d87 100644
--- a/python/libvirt-override.c
+++ b/python/libvirt-override.c
@@ -3195,6 +3195,182 @@ LIBVIRT_END_ALLOW_THREADS;
return ret;
}
+static PyObject *
+libvirt_virDomainSetBlockIoTune(PyObject *self ATTRIBUTE_UNUSED,
+ PyObject *args)
+{
+ virDomainPtr domain;
+ PyObject *pyobj_domain, *pyinfo;
+ const char *disk;
+ unsigned int flags;
+ virTypedParameterPtr params;
+ int nparams = 0, i;
+ int c_ret;
+
+ if (!PyArg_ParseTuple(args, (char *)"Ozi:virDomainSetBlockIoTune",
+ &pyobj_domain, &disk, &pyinfo, &flags))
+ return(NULL);
+ domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
+
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ c_ret = virDomainGetBlockIoTune(domain, disk, NULL, &nparams, flags);
+ LIBVIRT_END_ALLOW_THREADS;
+
+ if (c_ret < 0)
+ return VIR_PY_INT_FAIL;
+
+ if ((params = malloc(sizeof(*params)*nparams)) == NULL)
+ return VIR_PY_INT_FAIL;
+
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ c_ret = virDomainGetBlockIoTune(domain, disk, params, &nparams, flags);
+ LIBVIRT_END_ALLOW_THREADS;
+
+ if (c_ret < 0) {
+ free(params);
+ return VIR_PY_INT_FAIL;
+ }
+
+ /* convert to a Python tuple of long objects */
+ for (i = 0; i < nparams; i++) {
+ PyObject *key, *val;
+ key = libvirt_constcharPtrWrap(params[i].field);
+ val = PyDict_GetItem(pyinfo, key);
+ Py_DECREF(key);
+
+ if (val == NULL)
+ continue;
+
+ switch (params[i].type) {
+ case VIR_TYPED_PARAM_INT:
+ params[i].value.i = (int)PyInt_AS_LONG(val);
+ break;
+
+ case VIR_TYPED_PARAM_UINT:
+ params[i].value.ui = (unsigned int)PyInt_AS_LONG(val);
+ break;
+
+ case VIR_TYPED_PARAM_LLONG:
+ params[i].value.l = (long long)PyLong_AsLongLong(val);
+ break;
+
+ case VIR_TYPED_PARAM_ULLONG:
+ params[i].value.ul = (unsigned long long)PyLong_AsLongLong(val);
+ break;
+
+ case VIR_TYPED_PARAM_DOUBLE:
+ params[i].value.d = (double)PyFloat_AsDouble(val);
+ break;
+
+ case VIR_TYPED_PARAM_BOOLEAN:
+ {
+ PyObject *hacktrue = PyBool_FromLong(1);
+ params[i].value.b = hacktrue == val ? 1: 0;
+ Py_DECREF(hacktrue);
+ }
+ break;
+
+ default:
+ free(params);
+ return VIR_PY_INT_FAIL;
+ }
+ }
+
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ c_ret = virDomainSetMemoryParameters(domain, params, nparams, flags);
+ LIBVIRT_END_ALLOW_THREADS;
+
+ if (c_ret < 0) {
+ free(params);
+ return VIR_PY_INT_FAIL;
+ }
+
+ free(params);
+ return VIR_PY_INT_SUCCESS;
+}
+
+static PyObject *
+libvirt_virDomainGetBlockIoTune(PyObject *self ATTRIBUTE_UNUSED,
+ PyObject *args)
+{
+ virDomainPtr domain;
+ PyObject *pyobj_domain, *pyreply;
+ const char *disk;
+ int nparams = 0, i;
+ unsigned int flags;
+ virTypedParameterPtr params;
+ int c_ret;
+
+ if (!PyArg_ParseTuple(args, (char *)"Oi:virDomainGetBlockIoTune",
+ &pyobj_domain, &disk, &flags))
+ return(NULL);
+ domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
+
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ c_ret = virDomainGetBlockIoTune(domain, disk, NULL, &nparams, flags);
+ LIBVIRT_END_ALLOW_THREADS;
+
+ if (c_ret < 0)
+ return VIR_PY_NONE;
+
+ if ((params = malloc(sizeof(*params)*nparams)) == NULL)
+ return VIR_PY_NONE;
+
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ c_ret = virDomainGetBlockIoTune(domain, disk, params, &nparams, flags);
+ LIBVIRT_END_ALLOW_THREADS;
+
+ if (c_ret < 0) {
+ free(params);
+ return VIR_PY_NONE;
+ }
+
+ /* convert to a Python tuple of long objects */
+ if ((pyreply = PyDict_New()) == NULL) {
+ free(params);
+ return VIR_PY_NONE;
+ }
+ for (i = 0 ; i < nparams ; i++) {
+ PyObject *key, *val;
+
+ switch (params[i].type) {
+ case VIR_TYPED_PARAM_INT:
+ val = PyInt_FromLong((long)params[i].value.i);
+ break;
+
+ case VIR_TYPED_PARAM_UINT:
+ val = PyInt_FromLong((long)params[i].value.ui);
+ break;
+
+ case VIR_TYPED_PARAM_LLONG:
+ val = PyLong_FromLongLong((long long)params[i].value.l);
+ break;
+
+ case VIR_TYPED_PARAM_ULLONG:
+ val = PyLong_FromLongLong((unsigned long long)params[i].value.ul);
+ break;
+
+ case VIR_TYPED_PARAM_DOUBLE:
+ val = PyFloat_FromDouble((double)params[i].value.d);
+ break;
+
+ case VIR_TYPED_PARAM_BOOLEAN:
+ val = PyBool_FromLong((long)params[i].value.b);
+ break;
+
+ default:
+ free(params);
+ Py_DECREF(pyreply);
+ return VIR_PY_NONE;
+ }
+
+ key = libvirt_constcharPtrWrap(params[i].field);
+ PyDict_SetItem(pyreply, key, val);
+ }
+ free(params);
+ return(pyreply);
+}
+
/*******************************************
* Helper functions to avoid importing modules
* for every callback
@@ -4837,6 +5013,8 @@ static PyMethodDef libvirtMethods[] = {
{(char *) "virDomainSnapshotListNames", libvirt_virDomainSnapshotListNames, METH_VARARGS, NULL},
{(char *) "virDomainRevertToSnapshot", libvirt_virDomainRevertToSnapshot, METH_VARARGS, NULL},
{(char *) "virDomainGetBlockJobInfo", libvirt_virDomainGetBlockJobInfo, METH_VARARGS, NULL},
+ {(char *) "virDomainSetBlockIoTune", libvirt_virDomainSetBlockIoTune, METH_VARARGS, NULL},
+ {(char *) "virDomainGetBlockIoTune", libvirt_virDomainGetBlockIoTune, METH_VARARGS, NULL},
{(char *) "virDomainSendKey", libvirt_virDomainSendKey, METH_VARARGS, NULL},
{(char *) "virDomainMigrateGetMaxSpeed", libvirt_virDomainMigrateGetMaxSpeed, METH_VARARGS, NULL},
{NULL, NULL, 0, NULL}
--
1.7.1
--
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