[PATCH V2] xfs_repair: print superblock offsets and why they can't be verified

[KELEMEN Peter <Peter.Kelemen@cern.ch>]

Eric has pointed out that verify_set_primary_sb() will either
return 1 or XR_INSUFF_SEC_SB.  Move the check lower into
verify_set_primary_sb() by checking the return value of
verify_sb().  Example output:

found candidate secondary superblock...
verifying sb at 31249334272: bad magic number (1)
verifying sb at 62498668544: bad magic number (1)
verifying sb at 93748002816: bad magic number (1)
verifying sb at 124997337088: bad magic number (1)
unable to verify superblock, continuing...


Signed-off-by: KELEMEN Peter <Peter.Kelemen@cern.ch>

Index: xfsprogs/repair/sb.c
===================================================================
RCS file: /cvs/xfs-cmds/xfsprogs/repair/sb.c,v
retrieving revision 1.22
diff -u -u -r1.22 sb.c
--- xfsprogs/repair/sb.c	8 Sep 2008 06:18:43 -0000	1.22
+++ xfsprogs/repair/sb.c	22 Oct 2008 23:17:27 -0000
@@ -683,6 +683,7 @@
 	int		num_ok;
 	int		retval;
 	int		round;
+	int		reason;	/* why the sb check failed */
 
 	/*
 	 * select the number of secondaries to try for
@@ -727,7 +728,7 @@
 				goto out;
 			}
 
-			if (verify_sb(sb, 0) == XR_OK)  {
+			if ((reason = verify_sb(sb, 0)) == XR_OK)  {
 				/*
 				 * save away geometry info.
 				 * don't bother checking the sb
@@ -740,6 +741,9 @@
 				get_sb_geometry(&geo, sb);
 				list = add_geo(list, &geo, agno);
 				num_ok++;
+			} else {
+				do_warn("verifying sb at %Lu: %s (%d)\n",
+					off, err_string(reason), reason);
 			}
 		}
 	}