Support backup-restore to a specific volume type or AZ
Enhance the 'backup-restore' shell command to support restoring a backup to a newly created volume of a specific volume type and/or in a different AZ. New '--volume-type' and '--availability-zone' arguments leverage the existing cinder API's ability to create a volume from a backup, which was added in microversion v3.47. The shell code is a new v3 implementation, and it drops support for the v2 command's deprecated '--volume-id' argument. Change-Id: Ic6645d3b973f8487903c5f57e936ba3b4b3bf005
This commit is contained in:
Alan Bishop
parent
1abc1b5d40
commit
7e3566ed04
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@ -1641,3 +1641,160 @@ class ShellTest(utils.TestCase):
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'629632e7-99d2-4c40-9ae3-106fa3b1c9b7')
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self.assert_called(
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'DELETE', 'v3/default-types/629632e7-99d2-4c40-9ae3-106fa3b1c9b7')
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def test_restore(self):
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self.run_command('backup-restore 1234')
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self.assert_called('POST', '/backups/1234/restore')
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def test_restore_with_name(self):
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self.run_command('backup-restore 1234 --name restore_vol')
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expected = {'restore': {'volume_id': None, 'name': 'restore_vol'}}
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self.assert_called('POST', '/backups/1234/restore',
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body=expected)
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def test_restore_with_name_error(self):
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self.assertRaises(exceptions.CommandError, self.run_command,
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'backup-restore 1234 --volume fake_vol --name '
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'restore_vol')
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def test_restore_with_az(self):
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self.run_command('--os-volume-api-version 3.47 backup-restore 1234 '
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'--name restore_vol --availability-zone restore_az')
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expected = {'volume': {'size': 10,
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'name': 'restore_vol',
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'availability_zone': 'restore_az',
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'backup_id': '1234',
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'metadata': {},
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'imageRef': None,
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'source_volid': None,
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'consistencygroup_id': None,
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'snapshot_id': None,
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'volume_type': None,
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'description': None}}
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self.assert_called('POST', '/volumes', body=expected)
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def test_restore_with_az_microversion_error(self):
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self.assertRaises(exceptions.UnsupportedAttribute, self.run_command,
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'--os-volume-api-version 3.46 backup-restore 1234 '
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'--name restore_vol --availability-zone restore_az')
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def test_restore_with_volume_type(self):
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self.run_command('--os-volume-api-version 3.47 backup-restore 1234 '
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'--name restore_vol --volume-type restore_type')
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expected = {'volume': {'size': 10,
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'name': 'restore_vol',
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'volume_type': 'restore_type',
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'backup_id': '1234',
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'metadata': {},
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'imageRef': None,
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'source_volid': None,
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'consistencygroup_id': None,
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'snapshot_id': None,
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'availability_zone': None,
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'description': None}}
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self.assert_called('POST', '/volumes', body=expected)
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def test_restore_with_volume_type_microversion_error(self):
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self.assertRaises(exceptions.UnsupportedAttribute, self.run_command,
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'--os-volume-api-version 3.46 backup-restore 1234 '
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'--name restore_vol --volume-type restore_type')
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def test_restore_with_volume_type_and_az_no_name(self):
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self.run_command('--os-volume-api-version 3.47 backup-restore 1234 '
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'--volume-type restore_type '
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'--availability-zone restore_az')
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expected = {'volume': {'size': 10,
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'name': 'restore_backup_1234',
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'volume_type': 'restore_type',
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'availability_zone': 'restore_az',
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'backup_id': '1234',
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'metadata': {},
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'imageRef': None,
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'source_volid': None,
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'consistencygroup_id': None,
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'snapshot_id': None,
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'description': None}}
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self.assert_called('POST', '/volumes', body=expected)
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@ddt.data(
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{
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'volume': '1234',
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'name': None,
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'volume_type': None,
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'availability_zone': None,
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}, {
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'volume': '1234',
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'name': 'ignored',
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'volume_type': None,
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'availability_zone': None,
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}, {
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'volume': None,
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'name': 'sample-volume',
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'volume_type': 'sample-type',
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'availability_zone': None,
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}, {
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'volume': None,
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'name': 'sample-volume',
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'volume_type': None,
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'availability_zone': 'az1',
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}, {
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'volume': None,
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'name': 'sample-volume',
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'volume_type': None,
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'availability_zone': 'different-az',
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}, {
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'volume': None,
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'name': None,
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'volume_type': None,
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'availability_zone': 'different-az',
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},
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)
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@ddt.unpack
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@mock.patch('cinderclient.utils.print_dict')
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@mock.patch('cinderclient.tests.unit.v2.fakes._stub_restore')
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def test_do_backup_restore(self,
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mock_stub_restore,
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mock_print_dict,
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volume,
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name,
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volume_type,
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availability_zone):
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# Restore from the fake '1234' backup.
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cmd = '--os-volume-api-version 3.47 backup-restore 1234'
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if volume:
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cmd += ' --volume %s' % volume
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if name:
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cmd += ' --name %s' % name
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if volume_type:
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cmd += ' --volume-type %s' % volume_type
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if availability_zone:
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cmd += ' --availability-zone %s' % availability_zone
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if name or volume:
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volume_name = 'sample-volume'
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else:
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volume_name = 'restore_backup_1234'
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mock_stub_restore.return_value = {'volume_id': '1234',
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'volume_name': volume_name}
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self.run_command(cmd)
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# Check whether mock_stub_restore was called in order to determine
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# whether the restore command invoked the backup-restore API. If
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# mock_stub_restore was not called then this indicates the command
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# invoked the volume-create API to restore the backup to a new volume
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# of a specific volume type, or in a different AZ (the fake '1234'
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# backup is in az1).
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if volume_type or availability_zone == 'different-az':
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mock_stub_restore.assert_not_called()
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else:
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mock_stub_restore.assert_called_once()
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mock_print_dict.assert_called_once_with({
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'backup_id': '1234',
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'volume_id': '1234',
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'volume_name': volume_name,
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})
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@ -218,6 +218,74 @@ def do_backup_list(cs, args):
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AppendFilters.filters = []
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@utils.arg('backup', metavar='<backup>',
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help='Name or ID of backup to restore.')
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@utils.arg('--volume', metavar='<volume>',
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default=None,
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help='Name or ID of existing volume to which to restore. '
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'This is mutually exclusive with --name and takes priority. '
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'Default=None.')
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@utils.arg('--name', metavar='<name>',
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default=None,
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help='Use the name for new volume creation to restore. '
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'This is mutually exclusive with --volume and --volume '
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'takes priority. '
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'Default=None.')
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@utils.arg('--volume-type',
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metavar='<volume-type>',
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default=None,
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start_version='3.47',
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help='Volume type for the new volume creation to restore. This '
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'option is not valid when used with the "volume" option. '
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'Default=None.')
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@utils.arg('--availability-zone', metavar='<AZ>',
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default=None,
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start_version='3.47',
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help='AZ for the new volume creation to restore. By default it '
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'will be the same as backup AZ. This option is not valid when '
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'used with the "volume" option. Default=None.')
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def do_backup_restore(cs, args):
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"""Restores a backup."""
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if args.volume:
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volume_id = utils.find_volume(cs, args.volume).id
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if args.name:
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args.name = None
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print('Mutually exclusive options are specified simultaneously: '
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'"volume" and "name". The volume option takes priority.')
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else:
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volume_id = None
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volume_type = getattr(args, 'volume_type', None)
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az = getattr(args, 'availability_zone', None)
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if (volume_type or az) and args.volume:
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msg = ('The "volume-type" and "availability-zone" options are not '
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'valid when used with the "volume" option.')
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raise exceptions.ClientException(code=1, message=msg)
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backup = shell_utils.find_backup(cs, args.backup)
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info = {"backup_id": backup.id}
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if volume_type or (az and az != backup.availability_zone):
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# Implement restoring a backup to a newly created volume of a
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# specific volume type or in a different AZ by using the
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# volume-create API. The default volume name matches the pattern
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# cinder uses (see I23730834058d88e30be62624ada3b24cdaeaa6f3).
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volume_name = args.name or 'restore_backup_%s' % backup.id
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volume = cs.volumes.create(size=backup.size,
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name=volume_name,
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volume_type=volume_type,
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availability_zone=az,
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backup_id=backup.id)
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info['volume_id'] = volume._info['id']
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info['volume_name'] = volume_name
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else:
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restore = cs.restores.restore(backup.id, volume_id, args.name)
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info.update(restore._info)
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info.pop('links', None)
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utils.print_dict(info)
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@utils.arg('--detail',
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action='store_true',
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help='Show detailed information about pools.')
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@ -0,0 +1,7 @@
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---
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features:
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- |
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Enhance the ``backup-restore`` shell command to support restoring to a new
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volume created with a specific volume type and/or in a different AZ. New
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``--volume-type`` and ``--availability-zone`` arguments are compatible with
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cinder API microversion v3.47 onward.
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