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[PATCH] xfstests 276: Ensure lost+found is not created with wrong link c

To: xfs@xxxxxxxxxxx
Subject: [PATCH] xfstests 276: Ensure lost+found is not created with wrong link count
From: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
Date: Fri, 9 Dec 2011 14:56:41 -0200
Cc: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
xfs_repair was leaving lost+found directory with a wrong link count when a
cleaned inode was re-used to create lost+found. This test case confirm that,
after xfs_repair is executed, the lost+found inode is left in a consistent
state.
See commit: 198b747f255346bca64408875763b6ca0ed3d57d from xfsprogs tree

Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
---
 276     |   86 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 276.out |    2 +
 group   |    1 +
 3 files changed, 89 insertions(+), 0 deletions(-)
 create mode 100755 276
 create mode 100644 276.out

diff --git a/276 b/276
new file mode 100755
index 0000000..970169d
--- /dev/null
+++ b/276
@@ -0,0 +1,86 @@
+#! /bin/bash
+# FS QA Test No. 276
+#
+# Test xfs_repair to ensure it fixes the lost+found link count
+# at the first run. See also commit 198b747f255346bca64408875763b6ca0ed3d57d
+# from xfsprogs tree.
+# 
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2011 Red Hat, Inc.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+#
+# creator
+owner=cmaiolino@xxxxxxxxxx
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1       # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+# real QA test starts here
+_supported_fs xfs 
+_supported_os Linux
+_require_scratch
+_scratch_mkfs >/dev/null 2>&1
+_scratch_mount
+
+mkdir -p $SCRATCH_MNT/dir/subdir
+
+#get inodes to be changed
+DIR_INO=`ls -i $SCRATCH_MNT |awk '{print $1}'`
+SUBDIR_INO=`ls -i $SCRATCH_MNT/dir |awk '{print $1}'`
+
+_scratch_unmount
+
+echo "Silence is goodness..."
+
+# Corrupt DIR
+xfs_db -x -c "inode $DIR_INO" -c "write u.sfdir2.list[0].inumber.i4 0" 
$SCRATCH_DEV > /dev/null 2>&1
+xfs_db -x -c "inode $DIR_INO" -c "write u.sfdir2.list[0].name 0" $SCRATCH_DEV 
>/dev/null 2>&1
+xfs_db -x -c "inode $DIR_INO" -c "write u.sfdir2.list[0].offset 0" 
$SCRATCH_DEV >/dev/null 2>&1
+xfs_db -x -c "inode $DIR_INO" -c "write u.sfdir2.list[0].namelen 0" 
$SCRATCH_DEV >/dev/null 2>&1
+xfs_db -x -c "inode $DIR_INO" -c "write u.sfdir2.hdr.parent.i4 0" $SCRATCH_DEV 
>/dev/null 2>&1
+xfs_db -x -c "inode $DIR_INO" -c "write core.nlinkv2 0" $SCRATCH_DEV 
>/dev/null 2>&1
+
+# Corrupt SUBDIR
+xfs_db -x -c "inode $SUBDIR_INO" -c "write u.sfdir2.hdr.parent.i4 0" 
$SCRATCH_DEV >/dev/null 2>&1
+xfs_db -x -c "inode $SUBDIR_INO" -c "write core.nlinkv2 0" $SCRATCH_DEV 
>/dev/null 2>&1
+
+xfs_check $SCRATCH_DEV >/dev/null 2>&1
+xfs_repair $SCRATCH_DEV >/dev/null 2>&1
+RESULT=`xfs_check $SCRATCH_DEV`
+
+if [ "$RESULT" == "" ]; then
+       status=0
+else
+       echo "$RESULT"
+fi
+# if error
+exit
diff --git a/276.out b/276.out
new file mode 100644
index 0000000..8b8888b
--- /dev/null
+++ b/276.out
@@ -0,0 +1,2 @@
+QA output created by 276
+Silence is goodness...
diff --git a/group b/group
index 08d999a..16e9f10 100644
--- a/group
+++ b/group
@@ -389,3 +389,4 @@ deprecated
 273 auto rw
 274 auto rw
 275 auto rw
+276 repair
-- 
1.7.6.4

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