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 meta/v1

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

.spec

object

spec defines the desired characteristics of a snapshot requested by a user. More info: https://kubernetes.io/docs/concepts/storage/volume-snapshots#volumesnapshots Required.

.status

object

status represents the current information of a snapshot. NOTE: status can be modified by sources other than system controllers, and must not be depended upon for accuracy. Controllers should only use information from the VolumeSnapshotContent object after verifying that the binding is accurate and complete.

.spec
Description

spec defines the desired characteristics of a snapshot requested by a user. More info: https://kubernetes.io/docs/concepts/storage/volume-snapshots#volumesnapshots Required.

Type

object

Required
  • source

Property Type Description

source

object

source specifies where a snapshot will be created from. This field is immutable after creation. Required.

volumeSnapshotClassName

string

volumeSnapshotClassName is the name of the VolumeSnapshotClass requested by the VolumeSnapshot. If not specified, the default snapshot class will be used if one exists. If not specified, and there is no default snapshot class, dynamic snapshot creation will fail. Empty string is not allowed for this field. TODO(xiangqian): a webhook validation on empty string. More info: https://kubernetes.io/docs/concepts/storage/volume-snapshot-classes

.spec.source
Description

source specifies where a snapshot will be created from. This field is immutable after creation. Required.

Type

object

Property Type Description

persistentVolumeClaimName

string

persistentVolumeClaimName specifies the name of the PersistentVolumeClaim object in the same namespace as the VolumeSnapshot object where the snapshot should be dynamically taken from. This field is immutable.

volumeSnapshotContentName

string

volumeSnapshotContentName specifies the name of a pre-existing VolumeSnapshotContent object. This field is immutable.

.status
Description

status represents the current information of a snapshot. NOTE: status can be modified by sources other than system controllers, and must not be depended upon for accuracy. Controllers should only use information from the VolumeSnapshotContent object after verifying that the binding is accurate and complete.

Type

object

Property Type Description

boundVolumeSnapshotContentName

string

boundVolumeSnapshotContentName represents the name of the VolumeSnapshotContent object to which the VolumeSnapshot object is bound. If not specified, it indicates that the VolumeSnapshot object has not been successfully bound to a VolumeSnapshotContent object yet. NOTE: Specified boundVolumeSnapshotContentName alone does not mean binding is valid. Controllers MUST always verify bidirectional binding between VolumeSnapshot and VolumeSnapshotContent to avoid possible security issues.

creationTime

string

creationTime is the timestamp when the point-in-time snapshot is taken by the underlying storage system. In dynamic snapshot creation case, this field will be filled in with the "creation_time" value returned from CSI "CreateSnapshotRequest" gRPC call. For a pre-existing snapshot, this field will be filled with the "creation_time" value returned from the CSI "ListSnapshots" gRPC call if the driver supports it. If not specified, it indicates that the creation time of the snapshot is unknown.

error

object

error is the last observed error during snapshot creation, if any. This field could be helpful to upper level controllers(i.e., application controller) to decide whether they should continue on waiting for the snapshot to be created based on the type of error reported.

readyToUse

boolean

readyToUse indicates if a snapshot is ready to be used to restore a volume. In dynamic snapshot creation case, this field will be filled in with the "ready_to_use" value returned from CSI "CreateSnapshotRequest" gRPC call. For a pre-existing snapshot, this field will be filled with the "ready_to_use" value returned from the CSI "ListSnapshots" gRPC call if the driver supports it, otherwise, this field will be set to "True". If not specified, it means the readiness of a snapshot is unknown.

restoreSize

integer-or-string

restoreSize represents the complete size of the snapshot in bytes. In dynamic snapshot creation case, this field will be filled in with the "size_bytes" value returned from CSI "CreateSnapshotRequest" gRPC call. For a pre-existing snapshot, this field will be filled with the "size_bytes" value returned from the CSI "ListSnapshots" gRPC call if the driver supports it. When restoring a volume from this snapshot, the size of the volume MUST NOT be smaller than the restoreSize if it is specified, otherwise the restoration will fail. If not specified, it indicates that the size is unknown.

.status.error
Description

error is the last observed error during snapshot creation, if any. This field could be helpful to upper level controllers(i.e., application controller) to decide whether they should continue on waiting for the snapshot to be created based on the type of error reported.

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.

API endpoints

The following API endpoints are available:

  • /apis/snapshot.storage.k8s.io/v1beta1/volumesnapshots

    • GET: list objects of kind VolumeSnapshot

  • /apis/snapshot.storage.k8s.io/v1beta1/namespaces/{namespace}/volumesnapshots

    • DELETE: delete collection of VolumeSnapshot

    • GET: list objects of kind VolumeSnapshot

    • POST: create a VolumeSnapshot

  • /apis/snapshot.storage.k8s.io/v1beta1/namespaces/{namespace}/volumesnapshots/{name}

    • DELETE: delete a VolumeSnapshot

    • GET: read the specified VolumeSnapshot

    • PATCH: partially update the specified VolumeSnapshot

    • PUT: replace the specified VolumeSnapshot

  • /apis/snapshot.storage.k8s.io/v1beta1/namespaces/{namespace}/volumesnapshots/{name}/status

    • GET: read status of the specified VolumeSnapshot

    • PATCH: partially update status of the specified VolumeSnapshot

    • PUT: replace status of the specified VolumeSnapshot

/apis/snapshot.storage.k8s.io/v1beta1/volumesnapshots

Table 1. Global guery parameters
Parameter Type Description

allowWatchBookmarks

boolean

allowWatchBookmarks requests watch events with type "BOOKMARK". Servers that do not implement bookmarks may ignore this flag and bookmarks are sent at the server's discretion. Clients should not assume bookmarks are returned at any specific interval, nor may they assume the server will send any BOOKMARK event during a session. If this is not a watch, this field is ignored. If the feature gate WatchBookmarks is not enabled in apiserver, this field is ignored.

continue

string

The continue option should be set when retrieving more results from the server. Since this value is server defined, clients may only use the continue value from a previous query result with identical query parameters (except for the value of continue) and the server may reject a continue value it does not recognize. If the specified continue value is no longer valid whether due to expiration (generally five to fifteen minutes) or a configuration change on the server, the server will respond with a 410 ResourceExpired error together with a continue token. If the client needs a consistent list, it must restart their list without the continue field. Otherwise, the client may send another list request with the token received with the 410 error, the server will respond with a list starting from the next key, but from the latest snapshot, which is inconsistent from the previous list results - objects that are created, modified, or deleted after the first list request will be included in the response, as long as their keys are after the "next key".

This field is not supported when watch is true. Clients may start a watch from the last resourceVersion value returned by the server and not miss any modifications.

fieldSelector

string

A selector to restrict the list of returned objects by their fields. Defaults to everything.

labelSelector

string

A selector to restrict the list of returned objects by their labels. Defaults to everything.

limit

integer

limit is a maximum number of responses to return for a list call. If more items exist, the server will set the `continue` field on the list metadata to a value that can be used with the same initial query to retrieve the next set of results. Setting a limit may return fewer than the requested amount of items (up to zero items) in the event all requested objects are filtered out and clients should only use the presence of the continue field to determine whether more results are available. Servers may choose not to support the limit argument and will return all of the available results. If limit is specified and the continue field is empty, clients may assume that no more results are available. This field is not supported if watch is true.

The server guarantees that the objects returned when using continue will be identical to issuing a single list call without a limit - that is, no objects created, modified, or deleted after the first request is issued will be included in any subsequent continued requests. This is sometimes referred to as a consistent snapshot, and ensures that a client that is using limit to receive smaller chunks of a very large result can ensure they see all possible objects. If objects are updated during a chunked list the version of the object that was present at the time the first list result was calculated is returned.

pretty

string

If 'true', then the output is pretty printed.

resourceVersion

string

When specified with a watch call, shows changes that occur after that particular version of a resource. Defaults to changes from the beginning of history. When specified for list: - if unset, then the result is returned from remote storage based on quorum-read flag; - if it's 0, then we simply return what we currently have in cache, no guarantee; - if set to non zero, then the result is at least as fresh as given rv.

timeoutSeconds

integer

Timeout for the list/watch call. This limits the duration of the call, regardless of any activity or inactivity.

watch

boolean

Watch for changes to the described resources and return them as a stream of add, update, and remove notifications. Specify resourceVersion.

HTTP method

GET

Description

list objects of kind VolumeSnapshot

Table 2. HTTP responses
HTTP code Reponse body

200 - OK

VolumeSnapshotList snapshot.storage.k8s.io/v1beta1

401 - Unauthorized

Empty

/apis/snapshot.storage.k8s.io/v1beta1/namespaces/{namespace}/volumesnapshots

Table 3. Global path parameters
Parameter Type Description

namespace

string

object name and auth scope, such as for teams and projects

Table 4. Global guery parameters
Parameter Type Description

pretty

string

If 'true', then the output is pretty printed.

HTTP method

DELETE

Description

delete collection of VolumeSnapshot

Table 5. Query parameters
Parameter Type Description

allowWatchBookmarks

boolean

allowWatchBookmarks requests watch events with type "BOOKMARK". Servers that do not implement bookmarks may ignore this flag and bookmarks are sent at the server's discretion. Clients should not assume bookmarks are returned at any specific interval, nor may they assume the server will send any BOOKMARK event during a session. If this is not a watch, this field is ignored. If the feature gate WatchBookmarks is not enabled in apiserver, this field is ignored.

continue

string

The continue option should be set when retrieving more results from the server. Since this value is server defined, clients may only use the continue value from a previous query result with identical query parameters (except for the value of continue) and the server may reject a continue value it does not recognize. If the specified continue value is no longer valid whether due to expiration (generally five to fifteen minutes) or a configuration change on the server, the server will respond with a 410 ResourceExpired error together with a continue token. If the client needs a consistent list, it must restart their list without the continue field. Otherwise, the client may send another list request with the token received with the 410 error, the server will respond with a list starting from the next key, but from the latest snapshot, which is inconsistent from the previous list results - objects that are created, modified, or deleted after the first list request will be included in the response, as long as their keys are after the "next key".

This field is not supported when watch is true. Clients may start a watch from the last resourceVersion value returned by the server and not miss any modifications.

fieldSelector

string

A selector to restrict the list of returned objects by their fields. Defaults to everything.

labelSelector

string

A selector to restrict the list of returned objects by their labels. Defaults to everything.

limit

integer

limit is a maximum number of responses to return for a list call. If more items exist, the server will set the `continue` field on the list metadata to a value that can be used with the same initial query to retrieve the next set of results. Setting a limit may return fewer than the requested amount of items (up to zero items) in the event all requested objects are filtered out and clients should only use the presence of the continue field to determine whether more results are available. Servers may choose not to support the limit argument and will return all of the available results. If limit is specified and the continue field is empty, clients may assume that no more results are available. This field is not supported if watch is true.

The server guarantees that the objects returned when using continue will be identical to issuing a single list call without a limit - that is, no objects created, modified, or deleted after the first request is issued will be included in any subsequent continued requests. This is sometimes referred to as a consistent snapshot, and ensures that a client that is using limit to receive smaller chunks of a very large result can ensure they see all possible objects. If objects are updated during a chunked list the version of the object that was present at the time the first list result was calculated is returned.

resourceVersion

string

When specified with a watch call, shows changes that occur after that particular version of a resource. Defaults to changes from the beginning of history. When specified for list: - if unset, then the result is returned from remote storage based on quorum-read flag; - if it's 0, then we simply return what we currently have in cache, no guarantee; - if set to non zero, then the result is at least as fresh as given rv.

timeoutSeconds

integer

Timeout for the list/watch call. This limits the duration of the call, regardless of any activity or inactivity.

watch

boolean

Watch for changes to the described resources and return them as a stream of add, update, and remove notifications. Specify resourceVersion.

Table 6. HTTP responses
HTTP code Reponse body

200 - OK

Status meta/v1

401 - Unauthorized

Empty

HTTP method

GET

Description

list objects of kind VolumeSnapshot

Table 7. Query parameters
Parameter Type Description

allowWatchBookmarks

boolean

allowWatchBookmarks requests watch events with type "BOOKMARK". Servers that do not implement bookmarks may ignore this flag and bookmarks are sent at the server's discretion. Clients should not assume bookmarks are returned at any specific interval, nor may they assume the server will send any BOOKMARK event during a session. If this is not a watch, this field is ignored. If the feature gate WatchBookmarks is not enabled in apiserver, this field is ignored.

continue

string

The continue option should be set when retrieving more results from the server. Since this value is server defined, clients may only use the continue value from a previous query result with identical query parameters (except for the value of continue) and the server may reject a continue value it does not recognize. If the specified continue value is no longer valid whether due to expiration (generally five to fifteen minutes) or a configuration change on the server, the server will respond with a 410 ResourceExpired error together with a continue token. If the client needs a consistent list, it must restart their list without the continue field. Otherwise, the client may send another list request with the token received with the 410 error, the server will respond with a list starting from the next key, but from the latest snapshot, which is inconsistent from the previous list results - objects that are created, modified, or deleted after the first list request will be included in the response, as long as their keys are after the "next key".

This field is not supported when watch is true. Clients may start a watch from the last resourceVersion value returned by the server and not miss any modifications.

fieldSelector

string

A selector to restrict the list of returned objects by their fields. Defaults to everything.

labelSelector

string

A selector to restrict the list of returned objects by their labels. Defaults to everything.

limit

integer

limit is a maximum number of responses to return for a list call. If more items exist, the server will set the `continue` field on the list metadata to a value that can be used with the same initial query to retrieve the next set of results. Setting a limit may return fewer than the requested amount of items (up to zero items) in the event all requested objects are filtered out and clients should only use the presence of the continue field to determine whether more results are available. Servers may choose not to support the limit argument and will return all of the available results. If limit is specified and the continue field is empty, clients may assume that no more results are available. This field is not supported if watch is true.

The server guarantees that the objects returned when using continue will be identical to issuing a single list call without a limit - that is, no objects created, modified, or deleted after the first request is issued will be included in any subsequent continued requests. This is sometimes referred to as a consistent snapshot, and ensures that a client that is using limit to receive smaller chunks of a very large result can ensure they see all possible objects. If objects are updated during a chunked list the version of the object that was present at the time the first list result was calculated is returned.

resourceVersion

string

When specified with a watch call, shows changes that occur after that particular version of a resource. Defaults to changes from the beginning of history. When specified for list: - if unset, then the result is returned from remote storage based on quorum-read flag; - if it's 0, then we simply return what we currently have in cache, no guarantee; - if set to non zero, then the result is at least as fresh as given rv.

timeoutSeconds

integer

Timeout for the list/watch call. This limits the duration of the call, regardless of any activity or inactivity.

watch

boolean

Watch for changes to the described resources and return them as a stream of add, update, and remove notifications. Specify resourceVersion.

Table 8. HTTP responses
HTTP code Reponse body

200 - OK

VolumeSnapshotList snapshot.storage.k8s.io/v1beta1

401 - Unauthorized

Empty

HTTP method

POST

Description

create a VolumeSnapshot

Table 9. 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

fieldManager

string

fieldManager is a name associated with the actor or entity that is making these changes. The value must be less than or 128 characters long, and only contain printable characters, as defined by https://golang.org/pkg/unicode/#IsPrint.

Table 10. Body parameters
Parameter Type Description

body

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

Table 11. HTTP responses
HTTP code Reponse body

200 - OK

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

201 - Created

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

202 - Accepted

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

401 - Unauthorized

Empty

/apis/snapshot.storage.k8s.io/v1beta1/namespaces/{namespace}/volumesnapshots/{name}

Table 12. Global path parameters
Parameter Type Description

name

string

name of the VolumeSnapshot

namespace

string

object name and auth scope, such as for teams and projects

Table 13. Global guery parameters
Parameter Type Description

pretty

string

If 'true', then the output is pretty printed.

HTTP method

DELETE

Description

delete a VolumeSnapshot

Table 14. 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

gracePeriodSeconds

integer

The duration in seconds before the object should be deleted. Value must be non-negative integer. The value zero indicates delete immediately. If this value is nil, the default grace period for the specified type will be used. Defaults to a per object value if not specified. zero means delete immediately.

orphanDependents

boolean

Deprecated: please use the PropagationPolicy, this field will be deprecated in 1.7. Should the dependent objects be orphaned. If true/false, the "orphan" finalizer will be added to/removed from the object's finalizers list. Either this field or PropagationPolicy may be set, but not both.

propagationPolicy

string

Whether and how garbage collection will be performed. Either this field or OrphanDependents may be set, but not both. The default policy is decided by the existing finalizer set in the metadata.finalizers and the resource-specific default policy. Acceptable values are: 'Orphan' - orphan the dependents; 'Background' - allow the garbage collector to delete the dependents in the background; 'Foreground' - a cascading policy that deletes all dependents in the foreground.

Table 15. Body parameters
Parameter Type Description

body

DeleteOptions meta/v1

Table 16. HTTP responses
HTTP code Reponse body

200 - OK

Status meta/v1

202 - Accepted

Status meta/v1

401 - Unauthorized

Empty

HTTP method

GET

Description

read the specified VolumeSnapshot

Table 17. Query parameters
Parameter Type Description

resourceVersion

string

When specified: - if unset, then the result is returned from remote storage based on quorum-read flag; - if it's 0, then we simply return what we currently have in cache, no guarantee; - if set to non zero, then the result is at least as fresh as given rv.

Table 18. HTTP responses
HTTP code Reponse body

200 - OK

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

401 - Unauthorized

Empty

HTTP method

PATCH

Description

partially update the specified VolumeSnapshot

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

fieldManager

string

fieldManager is a name associated with the actor or entity that is making these changes. The value must be less than or 128 characters long, and only contain printable characters, as defined by https://golang.org/pkg/unicode/#IsPrint.

Table 20. Body parameters
Parameter Type Description

body

Patch meta/v1

Table 21. HTTP responses
HTTP code Reponse body

200 - OK

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

401 - Unauthorized

Empty

HTTP method

PUT

Description

replace the specified VolumeSnapshot

Table 22. 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

fieldManager

string

fieldManager is a name associated with the actor or entity that is making these changes. The value must be less than or 128 characters long, and only contain printable characters, as defined by https://golang.org/pkg/unicode/#IsPrint.

Table 23. Body parameters
Parameter Type Description

body

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

Table 24. HTTP responses
HTTP code Reponse body

200 - OK

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

201 - Created

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

401 - Unauthorized

Empty

/apis/snapshot.storage.k8s.io/v1beta1/namespaces/{namespace}/volumesnapshots/{name}/status

Table 25. Global path parameters
Parameter Type Description

name

string

name of the VolumeSnapshot

namespace

string

object name and auth scope, such as for teams and projects

Table 26. Global guery parameters
Parameter Type Description

pretty

string

If 'true', then the output is pretty printed.

HTTP method

GET

Description

read status of the specified VolumeSnapshot

Table 27. Query parameters
Parameter Type Description

resourceVersion

string

When specified: - if unset, then the result is returned from remote storage based on quorum-read flag; - if it's 0, then we simply return what we currently have in cache, no guarantee; - if set to non zero, then the result is at least as fresh as given rv.

Table 28. HTTP responses
HTTP code Reponse body

200 - OK

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

401 - Unauthorized

Empty

HTTP method

PATCH

Description

partially update status of the specified VolumeSnapshot

Table 29. 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

fieldManager

string

fieldManager is a name associated with the actor or entity that is making these changes. The value must be less than or 128 characters long, and only contain printable characters, as defined by https://golang.org/pkg/unicode/#IsPrint.

Table 30. Body parameters
Parameter Type Description

body

Patch meta/v1

Table 31. HTTP responses
HTTP code Reponse body

200 - OK

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

401 - Unauthorized

Empty

HTTP method

PUT

Description

replace status of the specified VolumeSnapshot

Table 32. 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

fieldManager

string

fieldManager is a name associated with the actor or entity that is making these changes. The value must be less than or 128 characters long, and only contain printable characters, as defined by https://golang.org/pkg/unicode/#IsPrint.

Table 33. Body parameters
Parameter Type Description

body

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

Table 34. HTTP responses
HTTP code Reponse body

200 - OK

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

201 - Created

VolumeSnapshot snapshot.storage.k8s.io/v1beta1

401 - Unauthorized

Empty