diff options
| author | Wang Shilong <wangsl.fnst@cn.fujitsu.com> | 2014-04-24 11:19:16 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2014-10-10 10:38:18 +0200 |
| commit | adfe8b5cfb24971f7fe17bbcabd0d1a54d4599a6 (patch) | |
| tree | 1230761f1e49aaf94b55d96fbd0ff172c702a76f | |
| parent | 897c98de73627c10e9bf68798e98b3477dfc3bb0 (diff) | |
btrfs-progs: fsck: clear out log tree in repair mode
Repair mode will commit transaction which will make us
fail to load log tree anymore.
Give a warning to common users, if they really want to
coninue, we will clear out log tree.
Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
| -rw-r--r-- | cmds-check.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/cmds-check.c b/cmds-check.c index afdd044d..59ef6071 100644 --- a/cmds-check.c +++ b/cmds-check.c @@ -6551,6 +6551,22 @@ out: return ret; } +static int zero_log_tree(struct btrfs_root *root) +{ + struct btrfs_trans_handle *trans; + int ret; + + trans = btrfs_start_transaction(root, 1); + if (IS_ERR(trans)) { + ret = PTR_ERR(trans); + return ret; + } + btrfs_set_super_log_root(root->fs_info->super_copy, 0); + btrfs_set_super_log_root_level(root->fs_info->super_copy, 0); + ret = btrfs_commit_transaction(trans, root); + return ret; +} + static struct option long_options[] = { { "super", 1, NULL, 's' }, { "repair", 0, NULL, 0 }, @@ -6670,6 +6686,23 @@ int cmd_check(int argc, char **argv) } root = info->fs_root; + /* + * repair mode will force us to commit transaction which + * will make us fail to load log tree when mounting. + */ + if (repair && btrfs_super_log_root(info->super_copy)) { + ret = ask_user("repair mode will force to clear out log tree, Are you sure?"); + if (!ret) { + ret = 1; + goto close_out; + } + ret = zero_log_tree(root); + if (ret) { + fprintf(stderr, "fail to zero log tree\n"); + goto close_out; + } + } + uuid_unparse(info->super_copy->fsid, uuidbuf); if (qgroup_report) { printf("Print quota groups for %s\nUUID: %s\n", argv[optind], |