def create_snapshot(self, snapshot):
volume_name = VOLUME_PREFIX + snapshot['volume_name'][-12:]
snapshot_name = VOLUME_PREFIX + snapshot['name'][-12:]
ret = self._cmd.create_snapshot(volume_name, snapshot_name)
if ret['key'] == 303:
raise exception.VolumeNotFound(volume_id=volume_name)
elif ret['key'] == 503:
raise exception.SnapshotLimitExceeded(allowed=4096)
elif ret['key'] == 504:
raise exception.SnapshotLimitExceeded(allowed=64)
def process_reserve_over_quota(context, overs, usages, quotas, size):
def _consumed(name):
return (usages[name]['reserved'] + usages[name]['in_use'])
for over in overs:
if 'gigabytes' in over:
msg = _LW("Quota exceeded for %(s_pid)s, tried to create "
"%(s_size)sG snapshot (%(d_consumed)dG of "
"%(d_quota)dG already consumed).")
LOG.warning(
msg, {
's_pid': context.project_id,
's_size': size,
'd_consumed': _consumed(over),
'd_quota': quotas[over]
})
raise exception.VolumeSizeExceedsAvailableQuota(
requested=size,
consumed=_consumed('gigabytes'),
quota=quotas['gigabytes'])
elif 'snapshots' in over:
msg = _LW("Quota exceeded for %(s_pid)s, tried to create "
"snapshot (%(d_consumed)d snapshots "
"already consumed).")
LOG.warning(msg, {
's_pid': context.project_id,
'd_consumed': _consumed(over)
})
raise exception.SnapshotLimitExceeded(allowed=quotas[over])
def create_snapshot(self, snapshot):
volume_name = self._convert_name(snapshot.volume_name)
snapshot_name = self._convert_name(snapshot.name)
ret = self._cmd.create_snapshot(volume_name, snapshot_name)
if ret['key'] == 303:
raise exception.VolumeNotFound(volume_id=volume_name)
elif ret['key'] == 503:
raise exception.SnapshotLimitExceeded(allowed=4096)
elif ret['key'] == 504:
raise exception.SnapshotLimitExceeded(allowed=64)
elif ret['key'] != 0:
msg = (_('Failed to create_snapshot %(snap)s on volume %(vol)s '
'code=%(ret)s, error=%(msg)s.') % {
'vol': volume_name,
'snap': snapshot_name,
'ret': ret['key'],
'msg': ret['msg']
})
raise exception.VolumeBackendAPIException(data=msg)
def _create_snapshot(self,
context,
volume,
name,
description,
force=False,
metadata=None):
check_policy(context, 'create_snapshot', volume)
if volume['migration_status'] is not None:
# Volume is migrating, wait until done
msg = _("Snapshot cannot be created while volume is migrating")
raise exception.InvalidVolume(reason=msg)
if ((not force) and (volume['status'] != "available")):
msg = _("must be available")
raise exception.InvalidVolume(reason=msg)
try:
if CONF.no_snapshot_gb_quota:
reserve_opts = {'snapshots': 1}
else:
reserve_opts = {'snapshots': 1, 'gigabytes': volume['size']}
QUOTAS.add_volume_type_opts(context, reserve_opts,
volume.get('volume_type_id'))
reservations = QUOTAS.reserve(context, **reserve_opts)
except exception.OverQuota as e:
overs = e.kwargs['overs']
usages = e.kwargs['usages']
quotas = e.kwargs['quotas']
def _consumed(name):
return (usages[name]['reserved'] + usages[name]['in_use'])
for over in overs:
if 'gigabytes' in over:
msg = _("Quota exceeded for %(s_pid)s, tried to create "
"%(s_size)sG snapshot (%(d_consumed)dG of "
"%(d_quota)dG already consumed)")
LOG.warn(
msg % {
's_pid': context.project_id,
's_size': volume['size'],
'd_consumed': _consumed(over),
'd_quota': quotas[over]
})
raise exception.VolumeSizeExceedsAvailableQuota(
requested=volume['size'],
consumed=_consumed('gigabytes'),
quota=quotas['gigabytes'])
elif 'snapshots' in over:
msg = _("Quota exceeded for %(s_pid)s, tried to create "
"snapshot (%(d_consumed)d snapshots "
"already consumed)")
LOG.warn(msg % {
's_pid': context.project_id,
'd_consumed': _consumed(over)
})
raise exception.SnapshotLimitExceeded(allowed=quotas[over])
self._check_metadata_properties(metadata)
options = {
'volume_id': volume['id'],
'user_id': context.user_id,
'project_id': context.project_id,
'status': "creating",
'progress': '0%',
'volume_size': volume['size'],
'display_name': name,
'display_description': description,
'volume_type_id': volume['volume_type_id'],
'encryption_key_id': volume['encryption_key_id'],
'metadata': metadata
}
try:
snapshot = self.db.snapshot_create(context, options)
QUOTAS.commit(context, reservations)
except Exception:
with excutils.save_and_reraise_exception():
try:
self.db.snapshot_destroy(context, volume['id'])
finally:
QUOTAS.rollback(context, reservations)
self.volume_rpcapi.create_snapshot(context, volume, snapshot)
return snapshot
