Fix vtbackup binary by adding the flags it needs that we missed before

go/flags/endtoend/vtbackup.txt

@@ -6,7 +6,12 @@ Usage of vtbackup:
       --azblob_backup_container_name string             Azure Blob Container Name.
       --azblob_backup_parallelism int                   Azure Blob operation parallelism (requires extra memory when increased). (default 1)
       --azblob_backup_storage_root string               Root prefix for all backup-related Azure Blobs; this should exclude both initial and trailing '/' (e.g. just 'a/b' not '/a/b/').
+      --backup_engine_implementation string             Specifies which implementation to use for creating new backups (builtin or xtrabackup). Restores will always be done with whichever engine created a given backup. (default "builtin")
+      --backup_storage_block_size int                   if backup_storage_compress is true, backup_storage_block_size sets the byte size for each block while compressing (default is 250000). (default 250000)
+      --backup_storage_compress                         if set, the backup files will be compressed (default is true). Set to false for instance if a backup_storage_hook is specified and it compresses the data. (default true)
+      --backup_storage_hook string                      if set, we send the contents of the backup files through this hook.
       --backup_storage_implementation string            Which backup storage implementation to use for creating and restoring backups.
+      --backup_storage_number_blocks int                if backup_storage_compress is true, backup_storage_number_blocks sets the number of blocks that can be processed, at once, before the writer blocks, during compression (default is 2). It should be equal to the number of CPUs available for compression. (default 2)
       --ceph_backup_storage_config string               Path to JSON config file for ceph backup storage. (default "ceph_backup_config.json")
       --concurrency int                                 (init restore parameter) how many concurrent files to restore at once (default 4)
       --consul_auth_static_file string                  JSON File to read the topos/tokens from.
@@ -153,3 +158,11 @@ Usage of vtbackup:
   -v, --v Level                                         log level for V logs
       --version                                         print binary version
       --vmodule moduleSpec                              comma-separated list of pattern=N settings for file-filtered logging
+      --xbstream_restore_flags string                   flags to pass to xbstream command during restore. These should be space separated and will be added to the end of the command. These need to match the ones used for backup e.g. --compress / --decompress, --encrypt / --decrypt
+      --xtrabackup_backup_flags string                  flags to pass to backup command. These should be space separated and will be added to the end of the command
+      --xtrabackup_prepare_flags string                 flags to pass to prepare command. These should be space separated and will be added to the end of the command
+      --xtrabackup_root_path string                     directory location of the xtrabackup and xbstream executables, e.g., /usr/bin
+      --xtrabackup_stream_mode string                   which mode to use if streaming, valid values are tar and xbstream (default "tar")
+      --xtrabackup_stripe_block_size uint               Size in bytes of each block that gets sent to a given stripe before rotating to the next stripe (default 102400)
+      --xtrabackup_stripes uint                         If greater than 0, use data striping across this many destination files to parallelize data transfer and decompression
+      --xtrabackup_user string                          User that xtrabackup will use to connect to the database server. This user must have all necessary privileges. For details, please refer to xtrabackup documentation.

go/vt/mysqlctl/backup.go

@@ -97,7 +97,7 @@ var (
 )
 
 func init() {
-	for _, cmd := range []string{"mysqlctl", "mysqlctld", "vtcombo", "vttablet", "vttestserver", "vtctld", "vtctldclient", "vtexplain"} {
+	for _, cmd := range []string{"mysqlctl", "mysqlctld", "vtcombo", "vttablet", "vttestserver", "vtbackup", "vtctld", "vtctldclient", "vtexplain"} {
 		servenv.OnParseFor(cmd, registerBackupFlags)
 	}
 }

go/vt/mysqlctl/backupengine.go

@@ -112,7 +112,7 @@ type BackupRestoreEngine interface {
 var BackupRestoreEngineMap = make(map[string]BackupRestoreEngine)
 
 func init() {
-	for _, cmd := range []string{"mysqlctl", "mysqlctld", "vtcombo", "vttablet", "vttestserver", "vtctld", "vtctldclient", "vtexplain"} {
+	for _, cmd := range []string{"mysqlctl", "mysqlctld", "vtcombo", "vttablet", "vttestserver", "vtctld", "vtctldclient", "vtexplain", "vtbackup"} {
 		servenv.OnParseFor(cmd, registerBackupEngineFlags)
 	}
 }

go/vt/mysqlctl/xtrabackupengine.go

@@ -105,7 +105,7 @@ type xtraBackupManifest struct {
 }
 
 func init() {
-	for _, cmd := range []string{"mysqlctl", "mysqlctld", "vtcombo", "vttablet", "vttestserver", "vtctld", "vtctldclient", "vtexplain"} {
+	for _, cmd := range []string{"mysqlctl", "mysqlctld", "vtcombo", "vttablet", "vtbackup", "vttestserver", "vtctld", "vtctldclient", "vtexplain"} {
 		servenv.OnParseFor(cmd, registerXtraBackupEngineFlags)
 	}
 }