def delete(self, context, group, force=False):
if not group.host:
self.update_quota(context, group, -1, group.project_id)
LOG.debug(
"No host for consistency group %s. Deleting from "
"the database.", group.id)
group.destroy()
return
if not force and group.status not in ([
c_fields.ConsistencyGroupStatus.AVAILABLE,
c_fields.ConsistencyGroupStatus.ERROR
]):
msg = _("Consistency group status must be available or error, "
"but current status is: %s") % group.status
raise exception.InvalidConsistencyGroup(reason=msg)
cgsnapshots = storage.CGSnapshotList.get_all_by_group(
context.elevated(), group.id)
if cgsnapshots:
msg = _("Consistency group %s still has dependent "
"cgsnapshots.") % group.id
LOG.error(msg)
raise exception.InvalidConsistencyGroup(reason=msg)
volumes = self.db.volume_get_all_by_group(context.elevated(), group.id)
if volumes and not force:
msg = _("Consistency group %s still contains volumes. "
"The force flag is required to delete it.") % group.id
LOG.error(msg)
raise exception.InvalidConsistencyGroup(reason=msg)
for volume in volumes:
if volume['attach_status'] == "attached":
msg = _("Volume in consistency group %s is attached. "
"Need to detach first.") % group.id
LOG.error(msg)
raise exception.InvalidConsistencyGroup(reason=msg)
snapshots = storage.SnapshotList.get_all_for_volume(
context, volume['id'])
if snapshots:
msg = _("Volume in consistency group still has "
"dependent snapshots.")
LOG.error(msg)
raise exception.InvalidConsistencyGroup(reason=msg)
group.status = c_fields.ConsistencyGroupStatus.DELETING
group.terminated_at = timeutils.utcnow()
group.save()
self.jacket_rpcapi.delete_consistencygroup(context, group)
def _create_cg_from_cgsnapshot(self, context, group, cgsnapshot):
try:
snapshots = storage.SnapshotList.get_all_for_cgsnapshot(
context, cgsnapshot.id)
if not snapshots:
msg = _("Cgsnahost is empty. No consistency group "
"will be created.")
raise exception.InvalidConsistencyGroup(reason=msg)
for snapshot in snapshots:
kwargs = {}
kwargs['availability_zone'] = group.availability_zone
kwargs['cgsnapshot'] = cgsnapshot
kwargs['consistencygroup'] = group
kwargs['snapshot'] = snapshot
volume_type_id = snapshot.volume_type_id
if volume_type_id:
kwargs['volume_type'] = volume_types.get_volume_type(
context, volume_type_id)
# Since cgsnapshot is passed in, the following call will
# create a db entry for the volume, but will not call the
# volume manager to create a real volume in the backend yet.
# If error happens, taskflow will handle rollback of quota
# and removal of volume entry in the db.
try:
self.volume_api.create(context, snapshot.volume_size, None,
None, **kwargs)
except exception.CinderException:
with excutils.save_and_reraise_exception():
LOG.error(
_LE("Error occurred when creating volume "
"entry from snapshot in the process of "
"creating consistency group %(group)s "
"from cgsnapshot %(cgsnap)s."), {
'group': group.id,
'cgsnap': cgsnapshot.id
})
except Exception:
with excutils.save_and_reraise_exception():
try:
group.destroy()
finally:
LOG.error(
_LE("Error occurred when creating consistency "
"group %(group)s from cgsnapshot "
"%(cgsnap)s."), {
'group': group.id,
'cgsnap': cgsnapshot.id
})
volumes = self.db.volume_get_all_by_group(context, group.id)
for vol in volumes:
# Update the host field for the volume.
self.db.volume_update(context, vol['id'],
{'host': group.get('host')})
self.jacket_rpcapi.create_consistencygroup_from_src(
context, group, cgsnapshot)
def _create_cg_from_source_cg(self, context, group, source_cg):
try:
source_vols = self.db.volume_get_all_by_group(
context, source_cg.id)
if not source_vols:
msg = _("Source CG is empty. No consistency group "
"will be created.")
raise exception.InvalidConsistencyGroup(reason=msg)
for source_vol in source_vols:
kwargs = {}
kwargs['availability_zone'] = group.availability_zone
kwargs['source_cg'] = source_cg
kwargs['consistencygroup'] = group
kwargs['source_volume'] = source_vol
volume_type_id = source_vol.get('volume_type_id')
if volume_type_id:
kwargs['volume_type'] = volume_types.get_volume_type(
context, volume_type_id)
# Since source_cg is passed in, the following call will
# create a db entry for the volume, but will not call the
# volume manager to create a real volume in the backend yet.
# If error happens, taskflow will handle rollback of quota
# and removal of volume entry in the db.
try:
self.volume_api.create(context, source_vol['size'], None,
None, **kwargs)
except exception.CinderException:
with excutils.save_and_reraise_exception():
LOG.error(
_LE("Error occurred when creating cloned "
"volume in the process of creating "
"consistency group %(group)s from "
"source CG %(source_cg)s."), {
'group': group.id,
'source_cg': source_cg.id
})
except Exception:
with excutils.save_and_reraise_exception():
try:
group.destroy()
finally:
LOG.error(
_LE("Error occurred when creating consistency "
"group %(group)s from source CG "
"%(source_cg)s."), {
'group': group.id,
'source_cg': source_cg.id
})
volumes = self.db.volume_get_all_by_group(context, group.id)
for vol in volumes:
# Update the host field for the volume.
self.db.volume_update(context, vol['id'], {'host': group.host})
self.jacket_rpcapi.create_consistencygroup_from_src(
context, group, None, source_cg)
def _create_cgsnapshot(self, context, group, name, description):
volumes = self.db.volume_get_all_by_group(context.elevated(), group.id)
if not volumes:
msg = _("Consistency group is empty. No cgsnapshot "
"will be created.")
raise exception.InvalidConsistencyGroup(reason=msg)
options = {
'consistencygroup_id': group.id,
'user_id': context.user_id,
'project_id': context.project_id,
'status': "creating",
'name': name,
'description': description
}
cgsnapshot = None
cgsnapshot_id = None
try:
cgsnapshot = storage.CGSnapshot(context, **options)
cgsnapshot.create()
cgsnapshot_id = cgsnapshot.id
snap_name = cgsnapshot.name
snap_desc = cgsnapshot.description
self.volume_api.create_snapshots_in_db(context, volumes, snap_name,
snap_desc, True,
cgsnapshot_id)
except Exception:
with excutils.save_and_reraise_exception():
try:
if cgsnapshot:
cgsnapshot.destroy()
finally:
LOG.error(
_LE("Error occurred when creating cgsnapshot"
" %s."), cgsnapshot_id)
self.jacket_rpcapi.create_cgsnapshot(context, cgsnapshot)
return cgsnapshot
def update(self, context, group, name, description, add_volumes,
remove_volumes):
"""Update consistency group."""
if group.status != c_fields.ConsistencyGroupStatus.AVAILABLE:
msg = _("Consistency group status must be available, "
"but current status is: %s.") % group.status
raise exception.InvalidConsistencyGroup(reason=msg)
add_volumes_list = []
remove_volumes_list = []
if add_volumes:
add_volumes = add_volumes.strip(',')
add_volumes_list = add_volumes.split(',')
if remove_volumes:
remove_volumes = remove_volumes.strip(',')
remove_volumes_list = remove_volumes.split(',')
invalid_uuids = []
for uuid in add_volumes_list:
if uuid in remove_volumes_list:
invalid_uuids.append(uuid)
if invalid_uuids:
msg = _("UUIDs %s are in both add and remove volume "
"list.") % invalid_uuids
raise exception.InvalidVolume(reason=msg)
volumes = self.db.volume_get_all_by_group(context, group.id)
# Validate name.
if not name or name == group.name:
name = None
# Validate description.
if not description or description == group.description:
description = None
# Validate volumes in add_volumes and remove_volumes.
add_volumes_new = ""
remove_volumes_new = ""
if add_volumes_list:
add_volumes_new = self._validate_add_volumes(
context, volumes, add_volumes_list, group)
if remove_volumes_list:
remove_volumes_new = self._validate_remove_volumes(
volumes, remove_volumes_list, group)
if (not name and not description and not add_volumes_new
and not remove_volumes_new):
msg = (_("Cannot update consistency group %(group_id)s "
"because no valid name, description, add_volumes, "
"or remove_volumes were provided.") % {
'group_id': group.id
})
raise exception.InvalidConsistencyGroup(reason=msg)
fields = {'updated_at': timeutils.utcnow()}
# Update name and description in db now. No need to
# to send them over through an RPC call.
if name:
fields['name'] = name
if description:
fields['description'] = description
if not add_volumes_new and not remove_volumes_new:
# Only update name or description. Set status to available.
fields['status'] = 'available'
else:
fields['status'] = 'updating'
group.update(fields)
group.save()
# Do an RPC call only if the update request includes
# adding/removing volumes. add_volumes_new and remove_volumes_new
# are strings of volume UUIDs separated by commas with no spaces
# in between.
if add_volumes_new or remove_volumes_new:
self.jacket_rpcapi.update_consistencygroup(
context,
group,
add_volumes=add_volumes_new,
remove_volumes=remove_volumes_new)
def create_from_src(self,
context,
name,
description=None,
cgsnapshot_id=None,
source_cgid=None):
check_policy(context, 'create')
cgsnapshot = None
orig_cg = None
if cgsnapshot_id:
try:
cgsnapshot = storage.CGSnapshot.get_by_id(
context, cgsnapshot_id)
except exception.CgSnapshotNotFound:
with excutils.save_and_reraise_exception():
LOG.error(
_LE("CG snapshot %(cgsnap)s not found when "
"creating consistency group %(cg)s from "
"source."), {
'cg': name,
'cgsnap': cgsnapshot_id
})
else:
orig_cg = cgsnapshot.consistencygroup
source_cg = None
if source_cgid:
try:
source_cg = storage.ConsistencyGroup.get_by_id(
context, source_cgid)
except exception.ConsistencyGroupNotFound:
with excutils.save_and_reraise_exception():
LOG.error(
_LE("Source CG %(source_cg)s not found when "
"creating consistency group %(cg)s from "
"source."), {
'cg': name,
'source_cg': source_cgid
})
kwargs = {
'user_id': context.user_id,
'project_id': context.project_id,
'status': c_fields.ConsistencyGroupStatus.CREATING,
'name': name,
'description': description,
'cgsnapshot_id': cgsnapshot_id,
'source_cgid': source_cgid,
}
if orig_cg:
kwargs['volume_type_id'] = orig_cg.volume_type_id
kwargs['availability_zone'] = orig_cg.availability_zone
kwargs['host'] = orig_cg.host
if source_cg:
kwargs['volume_type_id'] = source_cg.volume_type_id
kwargs['availability_zone'] = source_cg.availability_zone
kwargs['host'] = source_cg.host
group = None
try:
group = storage.ConsistencyGroup(context=context, **kwargs)
group.create()
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(
_LE("Error occurred when creating consistency group"
" %(cg)s from cgsnapshot %(cgsnap)s."), {
'cg': name,
'cgsnap': cgsnapshot_id
})
# Update quota for consistencygroups
self.update_quota(context, group, 1)
if not group.host:
msg = _("No host to create consistency group %s.") % group.id
LOG.error(msg)
raise exception.InvalidConsistencyGroup(reason=msg)
if cgsnapshot:
self._create_cg_from_cgsnapshot(context, group, cgsnapshot)
elif source_cg:
self._create_cg_from_source_cg(context, group, source_cg)
return group