ceph-csi/internal/cephfs/errors.go

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Make CephFS plugin stateless reusing RADOS based journal scheme This is a part of the stateless set of commits for CephCSI. This commit removes the dependency on config maps to store cephFS provisioned volumes, and instead relies on RADOS based objects and keys, and required CSI VolumeID encoding to detect the provisioned volumes. Changes: - Provide backward compatibility to provisioned volumes by older plugin versions (1.0.0 or older) - Remove Create/Delete support for statically provisioned volumes (fixes #382) - Added namespace support to RADOS OMaps and used the same to store RADOS CSI objects and keys in the CephFS metadata pool - Added support to mention fsname for CephFS provisioning (fixes #359) - Changed field name in CSI Identifier to 'location', to denote a pool or fscid - Updated mounter cache to use new scheme - Required Helm manifests are updated - Required documentation and other manifests are updated - Made driver option 'metadatastorage' as optional, as fresh installs do not need to specify the same Testing done: - Create/Mount/Delete PVC - Create/Delete 5 PVCs - Mount version 1.0.0 PVC - Delete version 1.0.0 PV - Mount Statically defined PV/PVC/Pod - Mount Statically defined version 1.0.0 PV/PVC/Pod - Delete Statically defined version 1.0.0 PV/PVC/Pod - Node restart when mounted to test mountcache - Use InstanceID other than 'default' - RBD basic round of tests, as namespace is added to OMaps - csitest against ceph-fs plugin - NOTE: CephFS plugin still does not detect and address already created volumes but of a different size - Test not providing any value to the metadata storage parameter Signed-off-by: ShyamsundarR <srangana@redhat.com>
2019-05-28 19:03:18 +00:00
/*
Copyright 2019 The Ceph-CSI Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package cephfs
import (
"errors"
)
// Error strings for comparison with CLI errors.
const (
// volumeNotFound is returned when a subvolume is not found in CephFS.
volumeNotFound = "Error ENOENT"
// invalidCommand is returned when a command is not known to the cluster
invalidCommand = "Error EINVAL"
// snapNotFound is returned when snap name passed is not found in the list
// of snapshots for the given image.
snapNotFound = "Error ENOENT"
// snapProtectionExist is returned when the snapshot is already protected
snapProtectionExist = "Error EEXIST"
// volumeNotEmpty is returned when the volume is not empty.
volumeNotEmpty = "Error ENOTEMPTY"
)
var (
// ErrCloneInProgress is returned when snapshot clone state is `in progress`
ErrCloneInProgress = errors.New("in progress")
// ErrClonePending is returned when snapshot clone state is `pending`
ErrClonePending = errors.New("pending")
// ErrInvalidVolID is returned when a CSI passed VolumeID is not conformant to any known volume ID
// formats.
ErrInvalidVolID = errors.New("invalid VolumeID")
// ErrNonStaticVolume is returned when a volume is detected as not being
// statically provisioned.
ErrNonStaticVolume = errors.New("volume not static")
// ErrSnapProtectionExist is returned when the snapshot is already protected
ErrSnapProtectionExist = errors.New("snapshot protection already exists")
// ErrSnapNotFound is returned when snap name passed is not found in the list
// of snapshots for the given image.
ErrSnapNotFound = errors.New("snapshot not found")
// ErrVolumeNotFound is returned when a subvolume is not found in CephFS.
ErrVolumeNotFound = errors.New("volume not found")
// ErrInvalidCommand is returned when a command is not known to the cluster
ErrInvalidCommand = errors.New("invalid command")
// ErrVolumeHasSnapshots is returned when a subvolume has snapshots.
ErrVolumeHasSnapshots = errors.New("volume has snapshots")
)