| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved. |
| # |
| # FS QA Test No. 150 |
| # |
| # Ensure that reflinking a file N times doesn't eat a lot of blocks |
| # - Create a file and record fs block usage |
| # - Create some reflink copies |
| # - Compare fs block usage to before |
| # |
| . ./common/preamble |
| _begin_fstest auto quick clone |
| |
| # Override the default cleanup function. |
| _cleanup() |
| { |
| cd / |
| rm -rf $tmp.* $testdir |
| } |
| |
| # Import common functions. |
| . ./common/filter |
| . ./common/reflink |
| |
| # real QA test starts here |
| _require_test_reflink |
| _require_cp_reflink |
| |
| testdir=$TEST_DIR/test-$seq |
| rm -rf $testdir |
| mkdir $testdir |
| |
| echo "Create the original file blocks" |
| blksz="$(_get_block_size $testdir)" |
| blks=2000 |
| margin='15%' |
| sz=$((blksz * blks)) |
| nr=7 |
| filesize=$((blksz * nr)) |
| _pwrite_byte 0x61 0 $sz $testdir/file1 >> $seqres.full |
| sync |
| free_blocks0=$(stat -f $testdir -c '%f') |
| |
| echo "Create the reflink copies" |
| for i in `seq 2 $nr`; do |
| _cp_reflink $testdir/file1 $testdir/file.$i |
| done |
| _test_cycle_mount |
| free_blocks1=$(stat -f $testdir -c '%f') |
| |
| _within_tolerance "free blocks after reflink" $free_blocks1 $free_blocks0 $margin -v |
| |
| # success, all done |
| status=0 |
| exit |