2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
24 #include "kerncompat.h"
27 #include "print-tree.h"
28 #include "transaction.h"
32 static void print_usage(void) __attribute__((noreturn));
33 static void print_usage(void)
35 fprintf(stderr, "usage: btrfs-zero-log dev\n");
36 fprintf(stderr, "%s\n", PACKAGE_STRING);
40 int main(int ac, char **av)
42 struct btrfs_root *root;
43 struct btrfs_trans_handle *trans;
47 if (check_argc_exact(ac, 2))
52 if((ret = check_mounted(av[1])) < 0) {
53 fprintf(stderr, "Could not check mount status: %s\n", strerror(-ret));
56 fprintf(stderr, "%s is currently mounted. Aborting.\n", av[1]);
61 root = open_ctree(av[1], 0, OPEN_CTREE_WRITES | OPEN_CTREE_PARTIAL);
66 trans = btrfs_start_transaction(root, 1);
67 btrfs_set_super_log_root(root->fs_info->super_copy, 0);
68 btrfs_set_super_log_root_level(root->fs_info->super_copy, 0);
69 btrfs_commit_transaction(trans, root);
71 printf("Log root zero'ed\n");