def save_to_file(self, path):
"""
Override BaseVM save_to_file method
"""
state = virsh.domstate(self.name)
if state not in ('paused',):
raise virt_vm.VMStatusError("Cannot save a VM that is %s" % state)
logging.debug("Saving VM %s to %s" %(self.name, path))
virsh.save(self.name, path, uri=self.connect_uri)
state = virsh.domstate(self.name)
if state not in ('shut off',):
raise virt_vm.VMStatusError("VM not shut off after save")
def restore_from_file(self, path):
"""
Override BaseVM restore_from_file method
"""
state = virsh.domstate(self.name)
if state not in ('shut off',):
raise virt_vm.VMStatusError("Can not restore VM that is %s" % state)
logging.debug("Restoring VM from %s" % path)
virsh.restore(path, uri=self.connect_uri)
state = virsh.domstate(self.name)
if state not in ('paused','running'):
raise virt_vm.VMStatusError("VM not paused after restore, it is %s." %
state)
def save(name, path, **dargs):
"""
Store state of VM into named file.
@param: name: VM Name to operate on
@param: path: absolute path to state file
@param: dargs: standardized virsh function API keywords
"""
state = domstate(name, **dargs)
if state not in ('paused', ):
raise virt_vm.VMStatusError("Cannot save a VM that is %s" % state)
logging.debug("Saving VM %s to %s" % (name, path))
command("save %s %s" % (name, path), **dargs)
# libvirt always stops VM after saving
state = domstate(name, **dargs)
if state not in ('shut off', ):
raise virt_vm.VMStatusError("VM not shut off after save")
def virsh_save(name, path, uri=""):
"""
Store state of VM into named file.
@param: name: VM Name to operate on
@param: uri: URI of libvirt hypervisor to use
@param: path: absolute path to state file
"""
state = virsh_domstate(name, uri)
if state not in ('paused', ):
raise virt_vm.VMStatusError("Cannot save a VM that is %s" % state)
logging.debug("Saving VM %s to %s" % (name, path))
virsh_cmd("save %s %s" % (name, path), uri)
# libvirt always stops VM after saving
state = virsh_domstate(name, uri)
if state not in ('shut off', ):
raise virt_vm.VMStatusError("VM not shut off after save")
def restore(name, path, **dargs):
"""
Load state of VM from named file and remove file.
@param: name: VM Name to operate on
@param: path: absolute path to state file.
@param: dargs: standardized virsh function API keywords
"""
# Blindly assume named VM corresponds with state in path
# rely on higher-layers to take exception if mismatch
state = domstate(name, **dargs)
if state not in ('shut off', ):
raise virt_vm.VMStatusError("Can not restore VM that is %s" % state)
logging.debug("Restoring VM from %s" % path)
command("restore %s" % path, **dargs)
state = domstate(name, **dargs)
if state not in ('paused', 'running'):
raise virt_vm.VMStatusError("VM not paused after restore, it is %s." %
state)
def virsh_restore(name, path, uri=""):
"""
Load state of VM from named file and remove file.
@param: name: VM Name to operate on
@param: uri: URI of libvirt hypervisor to use
@param: path: absolute path to state file.
"""
# Blindly assume named VM cooresponds with state in path
# rely on higher-layers to take exception if missmatch
state = virsh_domstate(name, uri)
if state not in ('shut off', ):
raise virt_vm.VMStatusError("Can not restore VM that is %s" % state)
logging.debug("Restoring VM from %s" % path)
virsh_cmd("restore %s" % path, uri)
state = virsh_domstate(name, uri)
if state not in ('paused', 'running'):
raise virt_vm.VMStatusError("VM not paused after restore, it is %s." %
state)