def attach_volume(self, instance_name, device_path, mountpoint):
"""Attach volume storage to VM instance"""
# Before we start, check that the VM exists
vm_ref = VMHelper.lookup(self._session, instance_name)
if vm_ref is None:
raise exception.NotFound(
_('Instance %s not found') % instance_name)
# NOTE: No Resource Pool concept so far
LOG.debug(
_("Attach_volume: %(instance_name)s, %(device_path)s,"
" %(mountpoint)s") % locals())
# Create the iSCSI SR, and the PDB through which hosts access SRs.
# But first, retrieve target info, like Host, IQN, LUN and SCSIID
vol_rec = VolumeHelper.parse_volume_info(device_path, mountpoint)
label = 'SR-%s' % vol_rec['volumeId']
description = 'Disk-for:%s' % instance_name
# Create SR
sr_ref = VolumeHelper.create_iscsi_storage(self._session, vol_rec,
label, description)
# Introduce VDI and attach VBD to VM
try:
vdi_ref = VolumeHelper.introduce_vdi(self._session, sr_ref)
except StorageError, exc:
LOG.exception(exc)
VolumeHelper.destroy_iscsi_storage(self._session, sr_ref)
raise Exception(
_('Unable to create VDI on SR %(sr_ref)s for'
' instance %(instance_name)s') % locals())
def attach_volume(self, instance_name, device_path, mountpoint):
"""Attach volume storage to VM instance"""
# Before we start, check that the VM exists
vm_ref = VMHelper.lookup(self._session, instance_name)
if vm_ref is None:
raise exception.NotFound(_('Instance %s not found')
% instance_name)
# NOTE: No Resource Pool concept so far
LOG.debug(_("Attach_volume: %(instance_name)s, %(device_path)s,"
" %(mountpoint)s") % locals())
# Create the iSCSI SR, and the PDB through which hosts access SRs.
# But first, retrieve target info, like Host, IQN, LUN and SCSIID
vol_rec = VolumeHelper.parse_volume_info(device_path, mountpoint)
label = 'SR-%s' % vol_rec['volumeId']
description = 'Disk-for:%s' % instance_name
# Create SR
sr_ref = VolumeHelper.create_iscsi_storage(self._session,
vol_rec,
label,
description)
# Introduce VDI and attach VBD to VM
try:
vdi_ref = VolumeHelper.introduce_vdi(self._session, sr_ref)
except StorageError, exc:
LOG.exception(exc)
VolumeHelper.destroy_iscsi_storage(self._session, sr_ref)
raise Exception(_('Unable to create VDI on SR %(sr_ref)s for'
' instance %(instance_name)s') % locals())
# Introduce VDI and attach VBD to VM
try:
vdi_ref = VolumeHelper.introduce_vdi(self._session, sr_ref)
except StorageError, exc:
LOG.exception(exc)
VolumeHelper.destroy_iscsi_storage(self._session, sr_ref)
raise Exception(
_('Unable to create VDI on SR %(sr_ref)s for'
' instance %(instance_name)s') % locals())
else:
try:
vbd_ref = VMHelper.create_vbd(self._session, vm_ref, vdi_ref,
vol_rec['deviceNumber'], False)
except self.XenAPI.Failure, exc:
LOG.exception(exc)
VolumeHelper.destroy_iscsi_storage(self._session, sr_ref)
raise Exception(
_('Unable to use SR %(sr_ref)s for'
' instance %(instance_name)s') % locals())
else:
try:
task = self._session.call_xenapi('Async.VBD.plug', vbd_ref)
self._session.wait_for_task(task, vol_rec['deviceNumber'])
except self.XenAPI.Failure, exc:
LOG.exception(exc)
VolumeHelper.destroy_iscsi_storage(self._session, sr_ref)
raise Exception(
_('Unable to attach volume to instance %s') %
instance_name)
LOG.info(
_('Mountpoint %(mountpoint)s attached to'
description = "Disk-for:%s" % instance_name
# Create SR
sr_ref = VolumeHelper.create_iscsi_storage(self._session, vol_rec, label, description)
# Introduce VDI and attach VBD to VM
try:
vdi_ref = VolumeHelper.introduce_vdi(self._session, sr_ref)
except StorageError, exc:
LOG.exception(exc)
VolumeHelper.destroy_iscsi_storage(self._session, sr_ref)
raise Exception(_("Unable to create VDI on SR %(sr_ref)s for" " instance %(instance_name)s") % locals())
else:
try:
vbd_ref = VMHelper.create_vbd(self._session, vm_ref, vdi_ref, vol_rec["deviceNumber"], False)
except self.XenAPI.Failure, exc:
LOG.exception(exc)
VolumeHelper.destroy_iscsi_storage(self._session, sr_ref)
raise Exception(_("Unable to use SR %(sr_ref)s for" " instance %(instance_name)s") % locals())
else:
try:
task = self._session.call_xenapi("Async.VBD.plug", vbd_ref)
self._session.wait_for_task(task, vol_rec["deviceNumber"])
except self.XenAPI.Failure, exc:
LOG.exception(exc)
VolumeHelper.destroy_iscsi_storage(self._session, sr_ref)
raise Exception(_("Unable to attach volume to instance %s") % instance_name)
LOG.info(_("Mountpoint %(mountpoint)s attached to" " instance %(instance_name)s") % locals())
def detach_volume(self, instance_name, mountpoint):
"""Detach volume storage to VM instance"""
# Before we start, check that the VM exists
vm_ref = VMHelper.lookup(self._session, instance_name)
