db19048453
The current volume driver does not have a separate pre live migration method. During live migration, the volume must be discovered on the target host VIOSes for VSCSI attached volumes, but the connections will be automatically moved over. This patch separates the discovery and connect logic for use by live migration. However, it only addresses VSCSI needs. It does not address NPIV attached volumes. Change-Id: I56f10b5f41c3fdef7afd723eac3f6cbe3256ccba
117 lines
4.1 KiB
Python
117 lines
4.1 KiB
Python
# Copyright 2015 IBM Corp.
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#
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Exceptions specific to the powervm nova driver."""
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import abc
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from nova import exception as nex
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from nova.i18n import _
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import six
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@six.add_metaclass(abc.ABCMeta)
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class AbstractMediaException(nex.NovaException):
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pass
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@six.add_metaclass(abc.ABCMeta)
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class AbstractDiskException(nex.NovaException):
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pass
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class NoMediaRepoVolumeGroupFound(AbstractMediaException):
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msg_fmt = _("Unable to locate the volume group %(vol_grp)s to store the "
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"virtual optical media within. Unable to create the "
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"media repository.")
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class ManagementPartitionNotFoundException(nex.NovaException):
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"""Couldn't find exactly one management partition on the system."""
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msg_fmt = _("Expected to find exactly one management partition; found "
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"%(count)d.")
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class NoDiskDiscoveryException(nex.NovaException):
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"""Failed to discover any disk."""
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msg_fmt = _("Having scanned SCSI bus %(bus)x on the management partition, "
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"disk with UDID %(udid)s failed to appear after %(polls)d "
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"polls over %(timeout)d seconds.")
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class UniqueDiskDiscoveryException(nex.NovaException):
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"""Expected to discover exactly one disk, but discovered >1."""
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msg_fmt = _("Expected to find exactly one disk on the management "
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"partition at %(path_pattern)s; found %(count)d.")
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class DeviceDeletionException(nex.NovaException):
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"""Expected to delete a disk, but the disk is still present afterward."""
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msg_fmt = _("Device %(devpath)s is still present on the management "
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"partition after attempting to delete it. Polled %(polls)d "
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"times over %(timeout)d seconds.")
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class InstanceDiskMappingFailed(AbstractDiskException):
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msg_fmt = _("Failed to map boot disk of instance %(instance_name)s to "
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"the management partition from any Virtual I/O Server.")
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class NewMgmtMappingNotFoundException(nex.NovaException):
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"""Just created a mapping to the mgmt partition, but can't find it."""
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msg_fmt = _("Failed to find newly-created mapping of storage element "
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"%(stg_name)s from Virtual I/O Server %(vios_name)s to the "
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"management partition.")
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class VGNotFound(AbstractDiskException):
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msg_fmt = _("Unable to locate the volume group '%(vg_name)s' for this "
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"operation.")
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class ClusterNotFoundByName(AbstractDiskException):
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msg_fmt = _("Unable to locate the Cluster '%(clust_name)s' for this "
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"operation.")
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class NoConfigNoClusterFound(AbstractDiskException):
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msg_fmt = _('Unable to locate any Cluster for this operation.')
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class TooManyClustersFound(AbstractDiskException):
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msg_fmt = _("Unexpectedly found %(clust_count)d Clusters "
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"matching name '%(clust_name)s'.")
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class NoConfigTooManyClusters(AbstractDiskException):
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msg_fmt = _("No cluster_name specified. Refusing to select one of the "
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"%(clust_count)d Clusters found.")
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class VolumeAttachFailed(nex.NovaException):
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msg_fmt = _("Unable to attach storage (id: %(volume_id)s) to virtual "
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"machine %(instance_name)s. %(reason)s")
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class VolumeDetachFailed(nex.NovaException):
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msg_fmt = _("Unable to detach volume (id: %(volume_id)s) from virtual "
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"machine %(instance_name)s. %(reason)s")
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class VolumePreMigrationFailed(nex.NovaException):
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msg_fmt = _("Unable to perform pre live migration steps on volume (id: "
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"%(volume_id)s) from virtual machine %(instance_name)s.")
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