From b6924225c292593189e90604c395f87cbd4130ba Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Mon, 19 Jan 2015 15:59:58 -0500
Subject: [PATCH] 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>
---
fs/jbd2/recovery.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c
index bcbef08a4d8fc..b5128c6e63ad6 100644
--- 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;
--
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