Stop backup if any tablespace is compress.

Author: stalkerg

backup.c

@@ -1258,7 +1258,12 @@ add_files(parray *files, const char *root, bool add_root, bool is_pgdata)
 
 		/* compress map file it is not data file */
 		if (path_len > 4 && strncmp(file->path+(path_len-4), ".cfm", 4) == 0)
+		{
+			if (current.backup_mode == BACKUP_MODE_DIFF_PTRACK ||
+				current.backup_mode == BACKUP_MODE_DIFF_PAGE)
+				elog(ERROR, "You can't use incremental backup with compress tablespace");
 			continue;
+		}
 
 		/* name of data file start with digit */
 		fname = last_dir_separator(relative);