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apfstests/tests/btrfs/178
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Darrick J. Wong a860a167d8 common: kill _supported_os 
fstests only supports Linux, so get rid of this unnecessary predicate.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
2020-09-21 01:16:50 +08:00

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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/178
#
# Test an incremental send operation in a scenario where the relationship of
# ancestor-descendant between multiple directories is inversed, and where
# multiple directories that were previously ancestors of another directory now
# become descendents of multiple directories that used to be their ancestors in
# the parent snapshot. This used to trigger an infinite loop in the kernel code.
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"
tmp=/tmp/$$
status=1 # failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15
_cleanup()
{
cd /
rm -fr $send_files_dir
rm -f $tmp.*
}
# get standard environment, filters and checks
. ./common/rc
. ./common/filter
# real QA test starts here
_supported_fs btrfs
_require_test
_require_scratch
_require_fssum
send_files_dir=$TEST_DIR/btrfs-test-$seq
rm -f $seqres.full
rm -fr $send_files_dir
mkdir $send_files_dir
_scratch_mkfs >>$seqres.full 2>&1
_scratch_mount
# The name of each directory corresponds to its inode number, to make it easier
# to debug since btrfs' send processes inodes in ascending order according to
# their number.
mkdir $SCRATCH_MNT/257
mkdir $SCRATCH_MNT/258
mv $SCRATCH_MNT/257 $SCRATCH_MNT/258/257
mkdir $SCRATCH_MNT/259
mkdir $SCRATCH_MNT/260
mkdir $SCRATCH_MNT/261
mkdir $SCRATCH_MNT/262
mkdir $SCRATCH_MNT/263
mkdir $SCRATCH_MNT/264
mv $SCRATCH_MNT/258 $SCRATCH_MNT/264/258
mkdir $SCRATCH_MNT/265
mkdir $SCRATCH_MNT/266
mv $SCRATCH_MNT/259 $SCRATCH_MNT/266/259
mv $SCRATCH_MNT/260 $SCRATCH_MNT/266/260
mv $SCRATCH_MNT/264 $SCRATCH_MNT/266/264
mv $SCRATCH_MNT/265 $SCRATCH_MNT/266/265
mkdir $SCRATCH_MNT/266/260/267
mkdir $SCRATCH_MNT/266/268
mkdir $SCRATCH_MNT/266/269
mv $SCRATCH_MNT/262 $SCRATCH_MNT/266/269/262
mkdir $SCRATCH_MNT/266/270
mkdir $SCRATCH_MNT/271
mv $SCRATCH_MNT/266 $SCRATCH_MNT/271/266
mkdir $SCRATCH_MNT/271/266/272
mv $SCRATCH_MNT/263 $SCRATCH_MNT/271/266/272/263
mkdir $SCRATCH_MNT/273
mkdir $SCRATCH_MNT/271/266/274
mv $SCRATCH_MNT/273 $SCRATCH_MNT/271/266/274/273
mkdir $SCRATCH_MNT/271/266/272/275
mv $SCRATCH_MNT/271 $SCRATCH_MNT/261/271
# Filesystem looks like:
#
# .
# |--- 261/
# |--- 271/
# |--- 266/
# |--- 259/
# |--- 260/
# | |--- 267
# |
# |--- 264/
# | |--- 258/
# | |--- 257/
# |
# |--- 265/
# |--- 268/
# |--- 269/
# | |--- 262/
# |
# |--- 270/
# |--- 272/
# | |--- 263/
# | |--- 275/
# |
# |--- 274/
# |--- 273/
#
$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/261/271/266/272/275 $SCRATCH_MNT/275
mv $SCRATCH_MNT/261/271/266/274 $SCRATCH_MNT/275/274
mv $SCRATCH_MNT/261/271/266/269/262 $SCRATCH_MNT/275/274/273/262
mv $SCRATCH_MNT/261/271/266/269 $SCRATCH_MNT/275/274/273/262/269
mv $SCRATCH_MNT/261/271/266/264/258/257 $SCRATCH_MNT/261/271/266/272
mv $SCRATCH_MNT/261/271/266/264/258 $SCRATCH_MNT/275/274/273/262/269/258
mv $SCRATCH_MNT/261/271 $SCRATCH_MNT/275/274/273/262/269/258/271
mv $SCRATCH_MNT/275/274/273/262/269/258/271/266/268 \
$SCRATCH_MNT/275/274/273/262/269/258/271/268
mv $SCRATCH_MNT/275/274/273/262/269/258/271/266/260/267 \
$SCRATCH_MNT/275/274/273/262/269/258/271/268/267
mv $SCRATCH_MNT/275/274/273/262/269/258/271/266/270 \
$SCRATCH_MNT/275/274/273/262/269/258/271/268/267/270
mv $SCRATCH_MNT/275/274/273/262/269/258/271/266/265 \
$SCRATCH_MNT/275/274/273/262/269/258/271/266/259/265
mv $SCRATCH_MNT/275/274/273/262/269/258/271/266/259 \
$SCRATCH_MNT/275/274/273/262/269/258/271/268/267/270/259
mv $SCRATCH_MNT/275/274/273/262/269/258/271/266/272/263 \
$SCRATCH_MNT/275/274/273/262/269/258/271/266/264/263
mv $SCRATCH_MNT/275/274/273/262/269/258/271/266/272 \
$SCRATCH_MNT/275/274/273/262/269/258/271/268/267/270/272
mv $SCRATCH_MNT/275/274/273/262/269/258/271/266/260 \
$SCRATCH_MNT/275/274/273/262/269/258/271/268/267/270/272/257/260
mv $SCRATCH_MNT/275/274/273/262/269/258/271/266/264 \
$SCRATCH_MNT/275/274/273/262/269/258/271/268/267/270/272/257/264
mv $SCRATCH_MNT/261 \
$SCRATCH_MNT/275/274/273/262/269/258/271/268/267/270/272/257/264/263/261
mv $SCRATCH_MNT/275/274/273/262/269/258/271/266 \
$SCRATCH_MNT/275/274/273/262/269/258/271/268/267/270/272/257/264/263/261/266
# Filesystem now looks like:
#
# .
# |-- 275/
# |-- 274/
# |-- 273/
# |-- 262/
# |-- 269/
# |-- 258/
# |-- 271/
# |-- 268/
# |-- 267/
# |-- 270/
# |-- 259/
# | |-- 265/
# |
# |-- 272/
# |-- 257/
# |-- 260/
# |-- 264/
# |-- 263/
# |-- 261/
# |-- 266/
#
$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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