[[clean-up-snapshot-repo-api]]
=== Clean up snapshot repository API
++++
<titleabbrev>Clean up snapshot repository</titleabbrev>
++++

Triggers the review of a snapshot repository's contents and deletes any stale
data that is not referenced by existing snapshots.

////
[source,console]
-----------------------------------
PUT /_snapshot/my_repository
{
  "type": "fs",
  "settings": {
    "location": "my_backup_location"
  }
}
-----------------------------------
// TESTSETUP
////

[source,console]
----
POST /_snapshot/my_repository/_cleanup
----

[[clean-up-snapshot-repo-api-request]]
==== {api-request-title}

`POST /_snapshot/<repository>/_cleanup`

[[clean-up-snapshot-repo-api-desc]]
==== {api-description-title}

Over time, snapshot repositories can accumulate stale data that is no longer
referenced by existing snapshots.

While this unreferenced data does not negatively impact the performance or
safety of a snapshot repository, it can lead to more storage use than necessary.

You can use the clean up snapshot repository API to detect and delete this
unreferenced data.

[TIP]
====
Most cleanup operations performed by this API are performed automatically when
a snapshot is deleted from a repository.

If you regularly delete snapshots, calling this API may only reduce your storage
slightly or not at all.
====

[[clean-up-snapshot-repo-api-path-params]]
==== {api-path-parms-title}

`<repository>`::
(Required, string)
Name of the snapshot repository to review and clean up.

[[clean-up-snapshot-repo-api-query-params]]
==== {api-query-parms-title}

include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=timeoutparms]

[role="child_attributes"]
[[clean-up-snapshot-repo-api-response-body]]
==== {api-response-body-title}

`results`::
(object)
Contains statistics for cleanup operations.
+
.Properties of `results`
[%collapsible%open]
====
`deleted_bytes`::
(integer)
Number of bytes freed by cleanup operations.

`deleted_blobs`::
(integer)
Number of binary large objects (blobs) removed from the snapshot repository
during cleanup operations. Any non-zero value implies that unreferenced blobs
were found and subsequently cleaned up.
====

[[clean-up-snapshot-repo-api-example]]
==== {api-examples-title}

[source,console]
----
POST /_snapshot/my_repository/_cleanup
----

The API returns the following response:

[source,console-result]
----
{
  "results": {
    "deleted_bytes": 20,
    "deleted_blobs": 5
  }
}
----
// TEST[s/"deleted_bytes": 20/"deleted_bytes": 0/]
// TEST[s/"deleted_blobs": 5/"deleted_blobs": 0/]

////
[source,console]
----
DELETE /_snapshot/my_repository
----
////