ceph: hex dump corrupt server data to KERN_DEBUG

Also, print fsid using standard format, NOT hex dump.

Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/osdmap.c b/fs/ceph/osdmap.c
index be5318a..8c8ffe5 100644
--- a/fs/ceph/osdmap.c
+++ b/fs/ceph/osdmap.c
@@ -726,6 +726,9 @@
 bad:
 	pr_err("corrupt inc osdmap epoch %d off %d (%p of %p-%p)\n",
 	       epoch, (int)(*p - start), *p, start, end);
+	print_hex_dump(KERN_DEBUG, "osdmap: ",
+		       DUMP_PREFIX_OFFSET, 16, 1,
+		       start, end - start, true);
 	if (newcrush)
 		crush_destroy(newcrush);
 	return ERR_PTR(err);