IssueIn Tableau Server 2021.4.7 or 2022.1.2, creating a backup may fail with the following error:
Tableau Server could not verify that there is sufficient disk space for backup. If you believe there is enough space, you may skip the disk space check and force creation of a backup by using the '--override-disk-space-check' option. The backup will fail if it runs out of space.
Attempting to bypass the error with the --override-disk-space-check option will still fail with the following error:
An error occurred on the server generating the backup. This job failed due to unexpected error: 'BackupRestoreException' BackupRestoreException(message:ProxyClient was unable to find a gRPC channel to the service 'extract_service' as required by class 'com.tableausoftware.domain.extractdata.grpc.IExtractServiceMaintenanceGrpc'.)