| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved. |
| # |
| # FS QA Test No. 138 |
| # |
| # Ensuring that copy on write through the page cache works: |
| # - Reflink two files together |
| # - Write to the beginning, middle, and end |
| # - Check that the files are now different where we say they're different. |
| # |
| . ./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 files" |
| blksz=65536 |
| _pwrite_byte 0x61 0 $((blksz * 48 - 3)) $testdir/file1 >> $seqres.full |
| _cp_reflink $testdir/file1 $testdir/file2 >> $seqres.full |
| _pwrite_byte 0x61 0 $((blksz * 48 - 3)) $testdir/file2.chk >> $seqres.full |
| _test_cycle_mount |
| |
| echo "Compare files" |
| md5sum $testdir/file1 | _filter_test_dir |
| md5sum $testdir/file2 | _filter_test_dir |
| md5sum $testdir/file2.chk | _filter_test_dir |
| |
| cmp -s $testdir/file1 $testdir/file2 || echo "file1 and file2 do not match" |
| cmp -s $testdir/file1 $testdir/file2.chk || echo "file1 and file2.chk do not match" |
| cmp -s $testdir/file2 $testdir/file2.chk || echo "file1 and file2.chk do not match" |
| |
| echo "pagecache CoW the second file" |
| _pwrite_byte 0x62 0 17 $testdir/file2 >> $seqres.full |
| _pwrite_byte 0x62 0 17 $testdir/file2.chk >> $seqres.full |
| |
| _pwrite_byte 0x62 $((blksz * 16 - 34)) 17 $testdir/file2 >> $seqres.full |
| _pwrite_byte 0x62 $((blksz * 16 - 34)) 17 $testdir/file2.chk >> $seqres.full |
| |
| _pwrite_byte 0x62 $((blksz * 48 - 8)) 17 $testdir/file2 >> $seqres.full |
| _pwrite_byte 0x62 $((blksz * 48 - 8)) 17 $testdir/file2.chk >> $seqres.full |
| _test_cycle_mount |
| |
| echo "Compare files" |
| md5sum $testdir/file1 | _filter_test_dir |
| md5sum $testdir/file2 | _filter_test_dir |
| md5sum $testdir/file2.chk | _filter_test_dir |
| |
| cmp -s $testdir/file1 $testdir/file2 || echo "file1 and file2 do not match (intentional)" |
| cmp -s $testdir/file1 $testdir/file2.chk || echo "file1 and file2.chk do not match (intentional)" |
| cmp -s $testdir/file2 $testdir/file2.chk || echo "file2 and file2.chk do not match" |
| |
| echo "Compare the CoW'd section to the before file" |
| _compare_range $testdir/file1 0 $testdir/file2 0 17 \ |
| || echo "Start sections do not match (intentional)" |
| |
| _compare_range $testdir/file1 $((blksz * 16 - 34)) \ |
| $testdir/file2 $((blksz * 16 - 34)) 17 \ |
| || echo "Middle sections do not match (intentional)" |
| |
| _compare_range $testdir/file1 $((blksz * 48 - 8)) \ |
| $testdir/file2 $((blksz * 48 - 8)) 17 \ |
| || echo "End sections do not match (intentional)" |
| |
| echo "Compare the CoW'd section to the after file" |
| _compare_range $testdir/file2 0 $testdir/file2.chk 0 17 \ |
| || echo "Start sections do not match" |
| |
| _compare_range $testdir/file2 $((blksz * 16 - 34)) \ |
| $testdir/file2.chk $((blksz * 16 - 34)) 17 \ |
| || echo "Middle sections do not match" |
| |
| _compare_range $testdir/file2 $((blksz * 48 - 8)) \ |
| $testdir/file2.chk $((blksz * 48 - 8)) 17 \ |
| || echo "End sections do not match" |
| |
| echo "Compare the not CoW'd sections" |
| _compare_range $testdir/file1 18 $testdir/file2 18 17 \ |
| || echo "Start sections of file1 and file2 do not match" |
| |
| _compare_range $testdir/file2 18 $testdir/file2.chk 18 17 \ |
| || echo "Start sections of file2 and file2.chk do not match" |
| |
| _compare_range $testdir/file1 $((blksz * 16 - 17)) \ |
| $testdir/file2 $((blksz * 16 - 17)) 82 \ |
| || echo "Middle sections of file1 and file2 do not match" |
| |
| _compare_range $testdir/file2 $((blksz * 16 - 17)) \ |
| $testdir/file2.chk $((blksz * 16 - 17)) 82 \ |
| || echo "Middle sections of file2 and file2.chk do not match" |
| |
| _compare_range $testdir/file1 $((blksz * 48 - 108)) \ |
| $testdir/file2 $((blksz * 48 - 108)) 100 \ |
| || echo "End sections of file1 and file2 do not match" |
| |
| _compare_range $testdir/file2 $((blksz * 48 - 108)) \ |
| $testdir/file2.chk $((blksz * 48 - 108)) 100 \ |
| || echo "End sections of file2 and file2.chk do not match" |
| |
| _compare_range $testdir/file1 $((blksz * 14)) \ |
| $testdir/file2 $((blksz * 14)) $blksz \ |
| || echo "Untouched sections of file1 and file2 do not match" |
| |
| _compare_range $testdir/file2 $((blksz * 14)) \ |
| $testdir/file2.chk $((blksz * 14)) $blksz \ |
| || echo "Untouched sections of file2 and file2.chk do not match" |
| |
| # success, all done |
| status=0 |
| exit |