/* * backup-top filter driver * * The driver performs Copy-Before-Write (CBW) operation: it is injected above * some node, and before each write it copies _old_ data to the target node. * * Copyright (c) 2018-2019 Virtuozzo International GmbH. * * Author: * Sementsov-Ogievskiy Vladimir <vsementsov@virtuozzo.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef BACKUP_TOP_H #define BACKUP_TOP_H #include "block/block_int.h" #include "block/block-copy.h" BlockDriverState *bdrv_backup_top_append(BlockDriverState *source, BlockDriverState *target, const char *filter_node_name, uint64_t cluster_size, BdrvRequestFlags write_flags, BlockCopyState **bcs, Error **errp); void bdrv_backup_top_drop(BlockDriverState *bs); #endif /* BACKUP_TOP_H */