| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # |
| # FS QA Test No. 651 |
| # |
| # See what happens if we MMAP CoW blocks 2-4 of a page's worth of blocks when |
| # the second block is a regular block. (MMAP version of generic/205,206) |
| # |
| # 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. |
| # |
| . ./common/preamble |
| _begin_fstest auto quick clone |
| |
| # Import common functions. |
| . ./common/filter |
| . ./common/reflink |
| |
| # real QA test starts here |
| _require_scratch_reflink |
| |
| 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 |
| mkdir $testdir |
| |
| real_blksz=$(_get_file_block_size $testdir) |
| test $real_blksz != $blksz && _notrun "Failed to format with small blocksize." |
| |
| echo "Create the original files" |
| _pwrite_byte 0x61 0 $pagesz $testdir/file1 >> $seqres.full |
| |
| $XFS_IO_PROG -f -c "truncate $pagesz" $testdir/file2 >> $seqres.full |
| $XFS_IO_PROG -f -c "truncate $pagesz" $testdir/file2.chk >> $seqres.full |
| |
| _pwrite_byte 0x61 $blksz $blksz $testdir/file2 >> $seqres.full |
| _pwrite_byte 0x61 $blksz $blksz $testdir/file2.chk >> $seqres.full |
| |
| _pwrite_byte 0x61 $((blksz * 3)) $blksz $testdir/file2 >> $seqres.full |
| _pwrite_byte 0x61 $((blksz * 3)) $blksz $testdir/file2.chk >> $seqres.full |
| |
| _reflink_range $testdir/file1 $blksz $testdir/file2 $((blksz * 2)) $blksz >> $seqres.full |
| _pwrite_byte 0x61 $((blksz * 2)) $blksz $testdir/file2.chk >> $seqres.full |
| _scratch_cycle_mount |
| |
| echo "Compare files" |
| cmp -s $testdir/file1 $testdir/file2 && echo "file1 and file2 should not match." |
| cmp -s $testdir/file2 $testdir/file2.chk || echo "file2 and file2.chk don't match." |
| |
| echo "CoW and unmount" |
| $XFS_IO_PROG -f -c "mmap 0 $pagesz" \ |
| -c "mwrite -S 0x63 $((blksz + 17)) $((blksz * 3 - 34))" $testdir/file2 >> $seqres.full |
| $XFS_IO_PROG -f -c "mmap 0 $pagesz" \ |
| -c "mwrite -S 0x63 $((blksz + 17)) $((blksz * 3 - 34))" $testdir/file2.chk >> $seqres.full |
| _scratch_cycle_mount |
| |
| echo "Compare files" |
| cmp -s $testdir/file1 $testdir/file2 && echo "file1 and file2 should not match." |
| cmp -s $testdir/file2 $testdir/file2.chk || echo "file2 and file2.chk don't match." |
| |
| # success, all done |
| status=0 |
| exit |