| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2025 SUSE Linux Products GmbH. All Rights Reserved. |
| # |
| # FS QA Test 761 |
| # |
| # Making sure direct IO (O_DIRECT) writes won't cause any data checksum mismatch, |
| # even if the contents of the buffer changes during writeback. |
| # |
| # This is mostly for filesystems with data checksum support, which should fallback |
| # to buffer IO to avoid inconsistency. |
| # For filesystems without data checksum support, nothing needs to be bothered. |
| # |
| |
| . ./common/preamble |
| _begin_fstest auto quick |
| |
| _require_scratch |
| _require_odirect |
| _require_test_program dio-writeback-race |
| |
| [ "$FSTYP" = "btrfs" ] && _fixed_by_kernel_commit 968f19c5b1b7 \ |
| "btrfs: always fallback to buffered write if the inode requires checksum" |
| |
| _scratch_mkfs > $seqres.full 2>&1 |
| _scratch_mount |
| |
| blocksize=$(_get_file_block_size $SCRATCH_MNT) |
| filesize=$(( 64 * 1024 * 1024)) |
| |
| echo "blocksize=$blocksize filesize=$filesize" >> $seqres.full |
| |
| $here/src/dio-writeback-race -b $blocksize -s $filesize $SCRATCH_MNT/foobar |
| |
| # Read out the file, which should trigger checksum verification |
| cat $SCRATCH_MNT/foobar > /dev/null |
| |
| echo "Silence is golden" |
| |
| # success, all done |
| status=0 |
| exit |
