jbd2: complain about descriptor block checksum errors

We should complain in dmesg when journal recovery fails on account of
the descriptor block being corrupt, so that the diagnostic data can
be recovered.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c
index bcbef08a4d8fc8873994eb37d35881626f05af70..b5128c6e63ad6644d19bf861a062d63f48265a4d 100644 (file)
--- a/fs/jbd2/recovery.c
+++ b/fs/jbd2/recovery.c
@@ -524,6 +524,9 @@ static int do_one_pass(journal_t *journal,
                        if (descr_csum_size > 0 &&
                            !jbd2_descr_block_csum_verify(journal,
                                                          bh->b_data)) {
+                               printk(KERN_ERR "JBD2: Invalid checksum "
+                                      "recovering block %lu in log\n",
+                                      next_log_block);
                                err = -EIO;
                                brelse(bh);
                                goto failed;