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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2017 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test No. btrfs/144
#
# Test that an incremental send operation works correctly when an inode A is
# renamed, a new hard link added to it and some other inode B is renamed to
# the old name of inode A.
#
. ./common/preamble
_begin_fstest auto quick send
# Override the default cleanup function.
_cleanup()
{
cd /
rm -fr $send_files_dir
rm -f $tmp.*
}
. ./common/filter
_supported_fs btrfs
_require_test
_require_scratch
_require_fssum
send_files_dir=$TEST_DIR/btrfs-test-$seq
rm -fr $send_files_dir
mkdir $send_files_dir
_scratch_mkfs >>$seqres.full 2>&1
_scratch_mount
touch $SCRATCH_MNT/f1
touch $SCRATCH_MNT/f2
touch $SCRATCH_MNT/f3
# Filesystem looks like:
#
# . (ino 256)
# |
# |--- f1 (ino 257)
# |--- f2 (ino 258)
# |--- f3 (ino 259)
#
$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
$SCRATCH_MNT/mysnap1 > /dev/null
$BTRFS_UTIL_PROG send -f $send_files_dir/1.snap \
$SCRATCH_MNT/mysnap1 2>&1 1>/dev/null | _filter_scratch
mv $SCRATCH_MNT/f3 $SCRATCH_MNT/f4
ln $SCRATCH_MNT/f2 $SCRATCH_MNT/f5
mv $SCRATCH_MNT/f2 $SCRATCH_MNT/f3
mv $SCRATCH_MNT/f1 $SCRATCH_MNT/f2
# Filesystem now looks like:
#
# . (ino 256)
# |
# |--- f2 (ino 257)
# |--- f3 (ino 258)
# |--- f4 (ino 259)
# |--- f5 (ino 258)
#
$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
$SCRATCH_MNT/mysnap2 > /dev/null
$BTRFS_UTIL_PROG send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \
$SCRATCH_MNT/mysnap2 2>&1 1>/dev/null | _filter_scratch
$FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
$FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
-x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
# Now recreate the filesystem by receiving both send streams and verify we get
# the same content that the original filesystem had.
_scratch_unmount
_scratch_mkfs >>$seqres.full 2>&1
_scratch_mount
$BTRFS_UTIL_PROG receive -f $send_files_dir/1.snap $SCRATCH_MNT > /dev/null
$BTRFS_UTIL_PROG receive -f $send_files_dir/2.snap $SCRATCH_MNT > /dev/null
$FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
$FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
status=0
exit
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