gcloud preview compute reservations sub-blocks perform-maintenance

INFORMATION
gcloud preview compute reservations sub-blocks perform-maintenance is supported in universe domain universe; however, some of the values used in the help text may not be available. Command examples may not work as-is and may requires changes before execution.
NAME
gcloud preview compute reservations sub-blocks perform-maintenance - perform maintenance on a reservation sub-block
SYNOPSIS
gcloud preview compute reservations sub-blocks perform-maintenance RESERVATION --block-name=BLOCK_NAME --sub-block-name=SUB_BLOCK_NAME [--zone=ZONE] [GCLOUD_WIDE_FLAG …]
DESCRIPTION
(PREVIEW) Perform maintenance on a reservation sub-block.
EXAMPLES
To perform maintenance on a reservation sub-block in reservation exr-1 in ZONE with block name block-1 and sub-block name sub-block-1, run: 
gcloud preview compute reservations sub-blocks perform-maintenance exr-1 --zone=ZONE --block-name=block-1 --sub-block-name=sub-block-1
POSITIONAL ARGUMENTS
RESERVATION
Name of the reservation to perform-maintenance.
REQUIRED FLAGS
--block-name=BLOCK_NAME
The name of the reservation block.
--sub-block-name=SUB_BLOCK_NAME
The name of the reservation sub block.
OPTIONAL FLAGS
--zone=ZONE
Zone of the reservation to perform-maintenance. If not specified and the compute/zone property isn't set, you might be prompted to select a zone (interactive mode only).

To avoid prompting when this flag is omitted, you can set the compute/zone property: 

gcloud config set compute/zone ZONE

A list of zones can be fetched by running: 

gcloud compute zones list

To unset the property, run: 

gcloud config unset compute/zone

Alternatively, the zone can be stored in the environment variable CLOUDSDK_COMPUTE_ZONE.

GCLOUD WIDE FLAGS
These flags are available to all commands: --access-token-file, --account, --billing-project, --configuration, --flags-file, --flatten, --format, --help, --impersonate-service-account, --log-http, --project, --quiet, --trace-token, --user-output-enabled, --verbosity.

Run $ gcloud help for details.

NOTES
This command is currently in DEVELOPER PREVIEW and may change without notice. If this command fails with API permission errors despite specifying the correct project, you might be trying to access an API with an invitation-only early access allowlist. These variants are also available: 
gcloud compute reservations sub-blocks perform-maintenance
 
gcloud alpha compute reservations sub-blocks perform-maintenance
 
gcloud beta compute reservations sub-blocks perform-maintenance