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Specification

Property Type Description

apiVersion

string

APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources

kind

string

Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds

metadata

ObjectMeta

Standard object’s metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

spec

object

Spec defines properties of a VolumeGroupSnapshotContent created by the underlying storage system. Required.

status

object

status represents the current information of a group snapshot.

.spec

Description

Spec defines properties of a VolumeGroupSnapshotContent created by the underlying storage system. Required.

Type

object

Required
  • deletionPolicy

  • driver

  • source

  • volumeGroupSnapshotRef

Property Type Description

deletionPolicy

string

DeletionPolicy determines whether this VolumeGroupSnapshotContent and the physical group snapshot on the underlying storage system should be deleted when the bound VolumeGroupSnapshot is deleted. Supported values are "Retain" and "Delete". "Retain" means that the VolumeGroupSnapshotContent and its physical group snapshot on underlying storage system are kept. "Delete" means that the VolumeGroupSnapshotContent and its physical group snapshot on underlying storage system are deleted. For dynamically provisioned group snapshots, this field will automatically be filled in by the CSI snapshotter sidecar with the "DeletionPolicy" field defined in the corresponding VolumeGroupSnapshotClass. For pre-existing snapshots, users MUST specify this field when creating the VolumeGroupSnapshotContent object. Required.

driver

string

Driver is the name of the CSI driver used to create the physical group snapshot on the underlying storage system. This MUST be the same as the name returned by the CSI GetPluginName() call for that driver. Required.

source

object

Source specifies whether the snapshot is (or should be) dynamically provisioned or already exists, and just requires a Kubernetes object representation. This field is immutable after creation. Required.

volumeGroupSnapshotClassName

string

VolumeGroupSnapshotClassName is the name of the VolumeGroupSnapshotClass from which this group snapshot was (or will be) created. Note that after provisioning, the VolumeGroupSnapshotClass may be deleted or recreated with different set of values, and as such, should not be referenced post-snapshot creation. For dynamic provisioning, this field must be set. This field may be unset for pre-provisioned snapshots.

volumeGroupSnapshotRef

object

VolumeGroupSnapshotRef specifies the VolumeGroupSnapshot object to which this VolumeGroupSnapshotContent object is bound. VolumeGroupSnapshot.Spec.VolumeGroupSnapshotContentName field must reference to this VolumeGroupSnapshotContent’s name for the bidirectional binding to be valid. For a pre-existing VolumeGroupSnapshotContent object, name and namespace of the VolumeGroupSnapshot object MUST be provided for binding to happen. This field is immutable after creation. Required.

.spec.source

Description

Source specifies whether the snapshot is (or should be) dynamically provisioned or already exists, and just requires a Kubernetes object representation. This field is immutable after creation. Required.

Type

object

Property Type Description

groupSnapshotHandles

object

GroupSnapshotHandles specifies the CSI "group_snapshot_id" of a pre-existing group snapshot and a list of CSI "snapshot_id" of pre-existing snapshots on the underlying storage system for which a Kubernetes object representation was (or should be) created. This field is immutable.

volumeHandles

array (string)

VolumeHandles is a list of volume handles on the backend to be snapshotted together. It is specified for dynamic provisioning of the VolumeGroupSnapshot. This field is immutable.

.spec.source.groupSnapshotHandles

Description

GroupSnapshotHandles specifies the CSI "group_snapshot_id" of a pre-existing group snapshot and a list of CSI "snapshot_id" of pre-existing snapshots on the underlying storage system for which a Kubernetes object representation was (or should be) created. This field is immutable.

Type

object

Required
  • volumeGroupSnapshotHandle

  • volumeSnapshotHandles

Property Type Description

volumeGroupSnapshotHandle

string

VolumeGroupSnapshotHandle specifies the CSI "group_snapshot_id" of a pre-existing group snapshot on the underlying storage system for which a Kubernetes object representation was (or should be) created. This field is immutable. Required.

volumeSnapshotHandles

array (string)

VolumeSnapshotHandles is a list of CSI "snapshot_id" of pre-existing snapshots on the underlying storage system for which Kubernetes objects representation were (or should be) created. This field is immutable. Required.

.spec.volumeGroupSnapshotRef

Description

VolumeGroupSnapshotRef specifies the VolumeGroupSnapshot object to which this VolumeGroupSnapshotContent object is bound. VolumeGroupSnapshot.Spec.VolumeGroupSnapshotContentName field must reference to this VolumeGroupSnapshotContent’s name for the bidirectional binding to be valid. For a pre-existing VolumeGroupSnapshotContent object, name and namespace of the VolumeGroupSnapshot object MUST be provided for binding to happen. This field is immutable after creation. Required.

Type

object

Property Type Description

apiVersion

string

API version of the referent.

fieldPath

string

If referring to a piece of an object instead of an entire object, this string should contain a valid JSON/Go field access statement, such as desiredState.manifest.containers[2]. For example, if the object reference is to a container within a pod, this would take on a value like: "spec.containers{name}" (where "name" refers to the name of the container that triggered the event) or if no container name is specified "spec.containers[2]" (container with index 2 in this pod). This syntax is chosen only to have some well-defined way of referencing a part of an object. TODO: this design is not final and this field is subject to change in the future.

kind

string

Kind of the referent. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

namespace

string

Namespace of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/

resourceVersion

string

Specific resourceVersion to which this reference is made, if any. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#concurrency-control-and-consistency

uid

string

UID of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#uids

.status

Description

status represents the current information of a group snapshot.

Type

object

Property Type Description

creationTime

integer

CreationTime is the timestamp when the point-in-time group snapshot is taken by the underlying storage system. If not specified, it indicates the creation time is unknown. If not specified, it means the readiness of a group snapshot is unknown. The format of this field is a Unix nanoseconds time encoded as an int64. On Unix, the command date +%s%N returns the current time in nanoseconds since 1970-01-01 00:00:00 UTC.

error

object

Error is the last observed error during group snapshot creation, if any. Upon success after retry, this error field will be cleared.

pvVolumeSnapshotContentList

array

PVVolumeSnapshotContentList is the list of pairs of PV and VolumeSnapshotContent for this group snapshot The maximum number of allowed snapshots in the group is 100.

pvVolumeSnapshotContentList[]

object

PVVolumeSnapshotContentPair represent a pair of PV names and VolumeSnapshotContent names

readyToUse

boolean

ReadyToUse indicates if all the individual snapshots in the group are ready to be used to restore a group of volumes. ReadyToUse becomes true when ReadyToUse of all individual snapshots become true.

volumeGroupSnapshotHandle

string

VolumeGroupSnapshotHandle is a unique id returned by the CSI driver to identify the VolumeGroupSnapshot on the storage system. If a storage system does not provide such an id, the CSI driver can choose to return the VolumeGroupSnapshot name.

.status.error

Description

Error is the last observed error during group snapshot creation, if any. Upon success after retry, this error field will be cleared.

Type

object

Property Type Description

message

string

message is a string detailing the encountered error during snapshot creation if specified. NOTE: message may be logged, and it should not contain sensitive information.

time

string

time is the timestamp when the error was encountered.

.status.pvVolumeSnapshotContentList

Description

PVVolumeSnapshotContentList is the list of pairs of PV and VolumeSnapshotContent for this group snapshot The maximum number of allowed snapshots in the group is 100.

Type

array

.status.pvVolumeSnapshotContentList[]

Description

PVVolumeSnapshotContentPair represent a pair of PV names and VolumeSnapshotContent names

Type

object

Property Type Description

persistentVolumeRef

object

PersistentVolumeRef is a reference to the persistent volume resource

volumeSnapshotContentRef

object

VolumeSnapshotContentRef is a reference to the volume snapshot content resource

.status.pvVolumeSnapshotContentList[].persistentVolumeRef

Description

PersistentVolumeRef is a reference to the persistent volume resource

Type

object

Property Type Description

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names TODO: Add other useful fields. apiVersion, kind, uid?

.status.pvVolumeSnapshotContentList[].volumeSnapshotContentRef

Description

VolumeSnapshotContentRef is a reference to the volume snapshot content resource

Type

object

Property Type Description

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names TODO: Add other useful fields. apiVersion, kind, uid?

API endpoints

The following API endpoints are available:

  • /apis/groupsnapshot.storage.k8s.io/v1alpha1/volumegroupsnapshotcontents

    • DELETE: delete collection of VolumeGroupSnapshotContent

    • GET: list objects of kind VolumeGroupSnapshotContent

    • POST: create a VolumeGroupSnapshotContent

  • /apis/groupsnapshot.storage.k8s.io/v1alpha1/volumegroupsnapshotcontents/{name}

    • DELETE: delete a VolumeGroupSnapshotContent

    • GET: read the specified VolumeGroupSnapshotContent

    • PATCH: partially update the specified VolumeGroupSnapshotContent

    • PUT: replace the specified VolumeGroupSnapshotContent

  • /apis/groupsnapshot.storage.k8s.io/v1alpha1/volumegroupsnapshotcontents/{name}/status

    • GET: read status of the specified VolumeGroupSnapshotContent

    • PATCH: partially update status of the specified VolumeGroupSnapshotContent

    • PUT: replace status of the specified VolumeGroupSnapshotContent

/apis/groupsnapshot.storage.k8s.io/v1alpha1/volumegroupsnapshotcontents

HTTP method

DELETE

Description

delete collection of VolumeGroupSnapshotContent

Table 1. HTTP responses
HTTP code Reponse body

200 - OK

Status schema

401 - Unauthorized

Empty

HTTP method

GET

Description

list objects of kind VolumeGroupSnapshotContent

Table 2. HTTP responses
HTTP code Reponse body

200 - OK

VolumeGroupSnapshotContentList schema

401 - Unauthorized

Empty

HTTP method

POST

Description

create a VolumeGroupSnapshotContent

Table 3. Query parameters
Parameter Type Description

dryRun

string

When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 4. Body parameters
Parameter Type Description

body

VolumeGroupSnapshotContent schema

Table 5. HTTP responses
HTTP code Reponse body

200 - OK

VolumeGroupSnapshotContent schema

201 - Created

VolumeGroupSnapshotContent schema

202 - Accepted

VolumeGroupSnapshotContent schema

401 - Unauthorized

Empty

/apis/groupsnapshot.storage.k8s.io/v1alpha1/volumegroupsnapshotcontents/{name}

Table 6. Global path parameters
Parameter Type Description

name

string

name of the VolumeGroupSnapshotContent

HTTP method

DELETE

Description

delete a VolumeGroupSnapshotContent

Table 7. Query parameters
Parameter Type Description

dryRun

string

When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed

Table 8. HTTP responses
HTTP code Reponse body

200 - OK

Status schema

202 - Accepted

Status schema

401 - Unauthorized

Empty

HTTP method

GET

Description

read the specified VolumeGroupSnapshotContent

Table 9. HTTP responses
HTTP code Reponse body

200 - OK

VolumeGroupSnapshotContent schema

401 - Unauthorized

Empty

HTTP method

PATCH

Description

partially update the specified VolumeGroupSnapshotContent

Table 10. Query parameters
Parameter Type Description

dryRun

string

When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 11. HTTP responses
HTTP code Reponse body

200 - OK

VolumeGroupSnapshotContent schema

401 - Unauthorized

Empty

HTTP method

PUT

Description

replace the specified VolumeGroupSnapshotContent

Table 12. Query parameters
Parameter Type Description

dryRun

string

When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 13. Body parameters
Parameter Type Description

body

VolumeGroupSnapshotContent schema

Table 14. HTTP responses
HTTP code Reponse body

200 - OK

VolumeGroupSnapshotContent schema

201 - Created

VolumeGroupSnapshotContent schema

401 - Unauthorized

Empty

/apis/groupsnapshot.storage.k8s.io/v1alpha1/volumegroupsnapshotcontents/{name}/status

Table 15. Global path parameters
Parameter Type Description

name

string

name of the VolumeGroupSnapshotContent

HTTP method

GET

Description

read status of the specified VolumeGroupSnapshotContent

Table 16. HTTP responses
HTTP code Reponse body

200 - OK

VolumeGroupSnapshotContent schema

401 - Unauthorized

Empty

HTTP method

PATCH

Description

partially update status of the specified VolumeGroupSnapshotContent

Table 17. Query parameters
Parameter Type Description

dryRun

string

When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 18. HTTP responses
HTTP code Reponse body

200 - OK

VolumeGroupSnapshotContent schema

401 - Unauthorized

Empty

HTTP method

PUT

Description

replace status of the specified VolumeGroupSnapshotContent

Table 19. Query parameters
Parameter Type Description

dryRun

string

When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 20. Body parameters
Parameter Type Description

body

VolumeGroupSnapshotContent schema

Table 21. HTTP responses
HTTP code Reponse body

200 - OK

VolumeGroupSnapshotContent schema

201 - Created

VolumeGroupSnapshotContent schema

401 - Unauthorized

Empty