jbd2: complain about descriptor block checksum errors
authorDarrick J. Wong <darrick.wong@oracle.com>
Mon, 19 Jan 2015 20:59:58 +0000 (15:59 -0500)
committerTheodore Ts'o <tytso@mit.edu>
Mon, 19 Jan 2015 20:59:58 +0000 (15:59 -0500)
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>
fs/jbd2/recovery.c

index bcbef08..b5128c6 100644 (file)
@@ -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;