On Sun, Aug 10, 2025 at 07:11:56PM +0530, Ojaswin Mujoo wrote: > This tests uses fio to first create a file with mixed mappings. Then it > does atomic writes using aio dio with parallel jobs to the same file with > mixed mappings. This forces the filesystem allocator to allocate extents > over mixed mapping regions to stress FS block allocators. > > Avoid doing overlapping parallel atomic writes because it might give > unexpected results. Use offset_increment=, size= fio options to achieve > this behavior. > > Co-developed-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx> > Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx> > Signed-off-by: Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx> Looks ok still... Reviewed-by: "Darrick J. Wong" <djwong@xxxxxxxxxx> --D > --- > tests/generic/1227 | 131 +++++++++++++++++++++++++++++++++++++++++ > tests/generic/1227.out | 2 + > 2 files changed, 133 insertions(+) > create mode 100755 tests/generic/1227 > create mode 100644 tests/generic/1227.out > > diff --git a/tests/generic/1227 b/tests/generic/1227 > new file mode 100755 > index 00000000..7423e67c > --- /dev/null > +++ b/tests/generic/1227 > @@ -0,0 +1,131 @@ > +#! /bin/bash > +# SPDX-License-Identifier: GPL-2.0 > +# Copyright (c) 2025 IBM Corporation. All Rights Reserved. > +# > +# FS QA Test 1227 > +# > +# Validate FS atomic write using fio crc check verifier on mixed mappings > +# of a file. > +# > +. ./common/preamble > +. ./common/atomicwrites > + > +_begin_fstest auto aio rw atomicwrites > + > +_require_scratch_write_atomic_multi_fsblock > +_require_odirect > +_require_aio > +_require_xfs_io_command "truncate" > + > +_scratch_mkfs >> $seqres.full 2>&1 > +_scratch_mount > + > +touch "$SCRATCH_MNT/f1" > +awu_min_write=$(_get_atomic_write_unit_min "$SCRATCH_MNT/f1") > +awu_max_write=$(_get_atomic_write_unit_max "$SCRATCH_MNT/f1") > + > +aw_bsize=$(_max "$awu_min_write" "$((awu_max_write/4))") > +fsbsize=$(_get_block_size $SCRATCH_MNT) > + > +threads=$(_min "$(($(nproc) * 2 * LOAD_FACTOR))" "100") > +filesize=$((aw_bsize * threads * 100)) > +depth=$threads > +aw_io_size=$((filesize / threads)) > +aw_io_inc=$aw_io_size > +testfile=$SCRATCH_MNT/test-file > + > +fio_prep_config=$tmp.prep.fio > +fio_aw_config=$tmp.aw.fio > +fio_verify_config=$tmp.verify.fio > +fio_out=$tmp.fio.out > + > +cat >$fio_prep_config <<EOF > +# prep file to have mixed mappings > +[global] > +ioengine=libaio > +filename=$testfile > +size=$filesize > +bs=$fsbsize > +direct=1 > +iodepth=$depth > +group_reporting=1 > + > +# Create written extents > +[prep_written_blocks] > +ioengine=libaio > +rw=randwrite > +io_size=$((filesize/3)) > +random_generator=lfsr > + > +# Create unwritten extents > +[prep_unwritten_blocks] > +ioengine=falloc > +rw=randwrite > +io_size=$((filesize/3)) > +random_generator=lfsr > +EOF > + > +cat >$fio_aw_config <<EOF > +# atomic write to mixed mappings of written/unwritten/holes > +[atomic_write_job] > +ioengine=libaio > +rw=randwrite > +direct=1 > +atomic=1 > +random_generator=lfsr > +group_reporting=1 > + > +filename=$testfile > +bs=$aw_bsize > +size=$aw_io_size > +offset_increment=$aw_io_inc > +iodepth=$depth > +numjobs=$threads > + > +verify_state_save=0 > +verify=crc32c > +do_verify=0 > +EOF > + > +cat >$fio_verify_config <<EOF > +# verify atomic writes done by previous job > +[verify_job] > +ioengine=libaio > +rw=read > +random_generator=lfsr > +group_reporting=1 > + > +filename=$testfile > +size=$filesize > +bs=$aw_bsize > +iodepth=$depth > + > +verify_state_save=0 > +verify_only=1 > +verify=crc32c > +verify_fatal=1 > +verify_write_sequence=0 > +EOF > + > +_require_fio $fio_aw_config > +_require_fio $fio_verify_config > + > +cat $fio_prep_config >> $seqres.full > +cat $fio_aw_config >> $seqres.full > +cat $fio_verify_config >> $seqres.full > + > +$XFS_IO_PROG -fc "truncate $filesize" $testfile >> $seqres.full > + > +#prepare file with mixed mappings > +$FIO_PROG $fio_prep_config >> $seqres.full > + > +# do atomic writes without verifying > +$FIO_PROG $fio_aw_config >> $seqres.full > + > +# verify data is not torn > +$FIO_PROG $fio_verify_config >> $seqres.full > + > +# success, all done > +echo Silence is golden > +status=0 > +exit > diff --git a/tests/generic/1227.out b/tests/generic/1227.out > new file mode 100644 > index 00000000..2605d062 > --- /dev/null > +++ b/tests/generic/1227.out > @@ -0,0 +1,2 @@ > +QA output created by 1227 > +Silence is golden > -- > 2.49.0 > >
