ocfs2: block read meta ecc.
Add block check calls to the read_block validate functions. This is the
almost all of the read-side checking of metaecc. xattr buckets are not checked
yet. Writes are also unchecked, and so a read-write mount will quickly fail.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
diff --git a/fs/ocfs2/blockcheck.c b/fs/ocfs2/blockcheck.c
index 2bf3d7f..2ce6ae5 100644
--- a/fs/ocfs2/blockcheck.c
+++ b/fs/ocfs2/blockcheck.c
@@ -24,6 +24,8 @@
#include <linux/bitops.h>
#include <asm/byteorder.h>
+#include <cluster/masklog.h>
+
#include "ocfs2.h"
#include "blockcheck.h"
@@ -292,6 +294,10 @@
if (crc == check.bc_crc32e)
goto out;
+ mlog(ML_ERROR,
+ "CRC32 failed: stored: %u, computed %u. Applying ECC.\n",
+ (unsigned int)check.bc_crc32e, (unsigned int)crc);
+
/* Ok, try ECC fixups */
ecc = ocfs2_hamming_encode_block(data, blocksize);
ocfs2_hamming_fix_block(data, blocksize, ecc ^ check.bc_ecc);
@@ -301,6 +307,9 @@
if (crc == check.bc_crc32e)
goto out;
+ mlog(ML_ERROR, "Fixed CRC32 failed: stored: %u, computed %u\n",
+ (unsigned int)check.bc_crc32e, (unsigned int)crc);
+
rc = -EIO;
out: