本文整理匯總了Python中nova.virt.xenapi.volumeops.VolumeOps.create_volume_for_sm方法的典型用法代碼示例。如果您正苦於以下問題：Python VolumeOps.create_volume_for_sm方法的具體用法？Python VolumeOps.create_volume_for_sm怎麽用？Python VolumeOps.create_volume_for_sm使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類nova.virt.xenapi.volumeops.VolumeOps的用法示例。
在下文中一共展示了VolumeOps.create_volume_for_sm方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: XenSMDriver
# 需要導入模塊: from nova.virt.xenapi.volumeops import VolumeOps [as 別名]
# 或者: from nova.virt.xenapi.volumeops.VolumeOps import create_volume_for_sm [as 別名]
#.........這裏部分代碼省略.........
session = XenAPISession(url, username, password)
self._volumeops = VolumeOps(session)
except Exception as ex:
LOG.exception(ex)
raise exception.Error(_("Failed to initiate session"))
super(XenSMDriver, self).__init__(execute=utils.execute,
sync_exec=utils.execute,
*args, **kwargs)
def do_setup(self, ctxt):
"""Setup includes creating or introducing storage repos
existing in the database and destroying deleted ones."""
# TODO purge storage repos
self.ctxt = ctxt
self._create_storage_repos(ctxt)
def create_volume(self, volume):
"""Creates a logical volume. Can optionally return a Dictionary of
changes to the volume object to be persisted."""
# For now the scheduling logic will be to try to fit the volume in
# the first available backend.
# TODO better scheduling once APIs are in place
sm_vol_rec = None
backends = self.db.sm_backend_conf_get_all(self.ctxt)
for backend in backends:
# Ensure that storage repo exists, if not create.
# This needs to be done because if nova compute and
# volume are both running on this host, then, as a
# part of detach_volume, compute could potentially forget SR
self._create_storage_repo(self.ctxt, backend)
sm_vol_rec = self._volumeops.create_volume_for_sm(volume,
backend['sr_uuid'])
if sm_vol_rec:
LOG.debug(_('Volume will be created in backend - %d')
% backend['id'])
break
if sm_vol_rec:
# Update db
sm_vol_rec['id'] = volume['id']
sm_vol_rec['backend_id'] = backend['id']
try:
self.db.sm_volume_create(self.ctxt, sm_vol_rec)
except Exception as ex:
LOG.exception(ex)
raise exception.Error(_("Failed to update volume in db"))
else:
raise exception.Error(_('Unable to create volume'))
def delete_volume(self, volume):
vol_rec = self.db.sm_volume_get(self.ctxt, volume['id'])
try:
# If compute runs on this node, detach could have disconnected SR
backend_ref = self.db.sm_backend_conf_get(self.ctxt,
vol_rec['backend_id'])
self._create_storage_repo(self.ctxt, backend_ref)
self._volumeops.delete_volume_for_sm(vol_rec['vdi_uuid'])
except Exception as ex:
LOG.exception(ex)
raise exception.Error(_("Failed to delete vdi"))