+#! /bin/bash
+# FS QA Test No. 229
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# surrounding blocks vary between unwritten/regular/delalloc/hole.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates. 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
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+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 -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+runtest() {
+ echo "runtest $1 $2"
+ b2=$1
+ b4=$2
+ dir=$3
+
+ echo "Create the original files"
+ mkdir -p "$dir"
+ _pwrite_byte 0x61 0 $PAGESZ "$dir/file1" >> "$seqres.full"
+
+ "$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$dir/file2" >> "$seqres.full"
+ "$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$dir/file2.chk" >> "$seqres.full"
+
+ case "$b2" in
+ "regular")
+ _pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2" >> "$seqres.full"
+ _pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+ ;;
+ "unwritten")
+ "$XFS_IO_PROG" -f -c "falloc -k $BLKSZ $BLKSZ" "$dir/file2" >> "$seqres.full"
+ _pwrite_byte 0x00 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+ ;;
+ "hole")
+ ;;
+ esac
+
+
+
+ case "$b4" in
+ "regular")
+ _pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2" >> "$seqres.full"
+ _pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+ ;;
+ "unwritten")
+ "$XFS_IO_PROG" -f -c "falloc -k $((BLKSZ * 3)) $BLKSZ" "$dir/file2" >> "$seqres.full"
+ _pwrite_byte 0x00 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+ ;;
+ "hole")
+ ;;
+ esac
+
+ _reflink_range "$dir/file1" $BLKSZ "$dir/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+ _pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+ _scratch_remount
+
+ echo "Compare files"
+ ! cmp -s "$dir/file1" "$dir/file2" || _fail "file1 and file2 don't match."
+ cmp -s "$dir/file2" "$dir/file2.chk" || _fail "file2 and file2.chk don't match."
+
+ echo "CoW and unmount"
+ if [ "$b2" = "delalloc" ]; then
+ _pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2" >> "$seqres.full"
+ _pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+ fi
+
+ if [ "$b4" = "delalloc" ]; then
+ _pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2" >> "$seqres.full"
+ _pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+ fi
+
+ "$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$dir/file2" >> "$seqres.full"
+ "$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$dir/file2.chk" >> "$seqres.full"
+ _scratch_remount
+
+ echo "Compare files"
+ ! cmp -s "$dir/file1" "$dir/file2" || _fail "file1 and file2 don't match."
+ cmp -s "$dir/file2" "$dir/file2.chk" || _fail "file2 and file2.chk don't match."
+}
+
+runtest regular delalloc "$TESTDIR/r-d"
+runtest regular unwritten "$TESTDIR/r-u"
+runtest regular hole "$TESTDIR/r-h"
+runtest regular regular "$TESTDIR/r-r"
+
+runtest hole delalloc "$TESTDIR/h-d"
+runtest hole unwritten "$TESTDIR/h-u"
+runtest hole hole "$TESTDIR/h-h"
+runtest hole regular "$TESTDIR/h-r"
+
+runtest unwritten delalloc "$TESTDIR/u-d"
+runtest unwritten unwritten "$TESTDIR/u-u"
+runtest unwritten hole "$TESTDIR/u-h"
+runtest unwritten regular "$TESTDIR/u-r"
+
+runtest delalloc delalloc "$TESTDIR/d-d"
+runtest delalloc unwritten "$TESTDIR/d-u"
+runtest delalloc hole "$TESTDIR/d-h"
+runtest delalloc regular "$TESTDIR/d-r"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit