| Message ID | 20200205161228.24378-1-dsterba@suse.com |
|---|---|
| State | New |
| Headers | show |
| Series | btrfs: log message when rw remount is attempted with unclean tree-log | expand |
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 580ba7db67e5..a2554c651548 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1834,6 +1834,8 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data) } if (btrfs_super_log_root(fs_info->super_copy) != 0) { + btrfs_warn(f_info, + "mount required to replay tree-log, cannot remount read-write"); ret = -EINVAL; goto restore; }
A remount to a read-write filesystem is not safe when there's tree-log to be replayed. Files that could be opened until now might be affected by the changes in the tree-log. A regular mount is needed to replay the log so the filesystem presents the consistent view with the pending changes included. CC: stable@vger.kernel.org # 4.4+ Signed-off-by: David Sterba <dsterba@suse.com> --- fs/btrfs/super.c | 2 ++ 1 file changed, 2 insertions(+)