def rcd_get_diskName(self, vmName, vmID):
"""
"""
cmd = 'cat /var/run/libvirt/qemu/%s.xml' % vmName
srcDomXML = self.rcd_call_backendCmd(cmd, vmID)
parsedSrcDomXML = _domParseStr(srcDomXML)
domainXmlElements = parsedSrcDomXML.getElementsByTagName('domain')[0]
#domainXmlElements = parsedSrcDomXML.childNodes[0].getElementsByTagName('domain')[0]
allDiskDeviceXmlElements = domainXmlElements.getElementsByTagName(
'devices')[0].getElementsByTagName('disk')
snappableDiskDeviceXmlElements = \
self._filterSnappableDiskDevices(allDiskDeviceXmlElements)
disk = {}
for snappableDiskDeviceXmlElement in snappableDiskDeviceXmlElements:
diskType = snappableDiskDeviceXmlElement.getAttribute('type')
if diskType not in ['file', 'block']:
continue
devname = snappableDiskDeviceXmlElement.getElementsByTagName('target')[0].\
getAttribute('dev')
source = snappableDiskDeviceXmlElement.getElementsByTagName('source')[0].\
getAttribute('dev')
imageID = os.path.basename(os.path.dirname(source))
disk[imageID] = devname
return disk
def rcd_get_diskName(self, vmName, vmID):
"""
"""
cmd = 'cat /var/run/libvirt/qemu/%s.xml' % vmName
srcDomXML = self.rcd_call_backendCmd(cmd, vmID)
parsedSrcDomXML = _domParseStr(srcDomXML)
domainXmlElements = parsedSrcDomXML.getElementsByTagName('domain')[0]
#domainXmlElements = parsedSrcDomXML.childNodes[0].getElementsByTagName('domain')[0]
allDiskDeviceXmlElements = domainXmlElements.getElementsByTagName('devices')[0].getElementsByTagName('disk')
snappableDiskDeviceXmlElements = \
self._filterSnappableDiskDevices(allDiskDeviceXmlElements)
disk = {}
for snappableDiskDeviceXmlElement in snappableDiskDeviceXmlElements:
diskType = snappableDiskDeviceXmlElement.getAttribute('type')
if diskType not in ['file', 'block']:
continue
devname = snappableDiskDeviceXmlElement.getElementsByTagName('target')[0].\
getAttribute('dev')
source = snappableDiskDeviceXmlElement.getElementsByTagName('source')[0].\
getAttribute('dev')
imageID = os.path.basename(os.path.dirname(source))
disk[imageID] = devname
return disk
def getVmCpuTuneInfo(self, uuid):
ret = {}
domain = self._getDomainFromUUID(uuid)
# Get the user selection for vcpuLimit from the metadata
metadataCpuLimit = None
try:
metadataCpuLimit = domain.metadata(
libvirt.VIR_DOMAIN_METADATA_ELEMENT, _METADATA_VM_TUNE_URI, 0)
except libvirt.libvirtError as e:
if e.get_error_code() != libvirt.VIR_ERR_NO_DOMAIN_METADATA:
self.logger.error("Failed to retrieve QoS metadata")
if metadataCpuLimit:
metadataCpuLimitXML = _domParseStr(metadataCpuLimit)
nodeList = \
metadataCpuLimitXML.getElementsByTagName('vcpuLimit')
ret['vcpu_user_limit'] = nodeList[0].childNodes[0].data
else:
ret['vcpu_user_limit'] = 100
# Retrieve the current cpu tuning params
ret.update(domain.schedulerParameters())
if ret['vcpu_quota'] == None:
ret['vcpu_quota'] = 0
if ret['vcpu_period'] == None:
ret['vcpu_period'] = 0
# Get the number of vcpus
vcpuCount = domain.vcpusFlags(libvirt.VIR_DOMAIN_VCPU_CURRENT)
if vcpuCount != -1:
ret['vcpu_count'] = vcpuCount
else:
self.logger.error('Failed to get VM cpu count')
return None
return ret
def getVmCpuTuneInfo(self, uuid):
ret = {}
domain = self._getDomainFromUUID(uuid)
# Get the user selection for vcpuLimit from the metadata
metadataCpuLimit = None
try:
metadataCpuLimit = domain.metadata(
libvirt.VIR_DOMAIN_METADATA_ELEMENT, _METADATA_VM_TUNE_URI, 0)
except libvirt.libvirtError as e:
if e.get_error_code() != libvirt.VIR_ERR_NO_DOMAIN_METADATA:
self.logger.error("Failed to retrieve QoS metadata")
if metadataCpuLimit:
metadataCpuLimitXML = _domParseStr(metadataCpuLimit)
nodeList = \
metadataCpuLimitXML.getElementsByTagName('vcpuLimit')
ret['vcpu_user_limit'] = nodeList[0].childNodes[0].data
else:
ret['vcpu_user_limit'] = 100
# Retrieve the current cpu tuning params
ret.update(domain.schedulerParameters())
if ret['vcpu_quota'] == None:
ret['vcpu_quota'] = 0
if ret['vcpu_period'] == None:
ret['vcpu_period'] = 0
# Get the number of vcpus
vcpuCount = domain.vcpusFlags(libvirt.VIR_DOMAIN_VCPU_CURRENT)
if vcpuCount != -1:
ret['vcpu_count'] = vcpuCount
else:
self.logger.error('Failed to get VM cpu count')
return None
return ret