From: "Ritesh Harjani (IBM)" <ritesh.list@xxxxxxxxx>
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.
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx>
Signed-off-by: Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx>
---
tests/generic/769 | 101 ++++++++++++++++++++++++++++++++++++++++++
tests/generic/769.out | 2 +
2 files changed, 103 insertions(+)
create mode 100755 tests/generic/769
create mode 100644 tests/generic/769.out
diff --git a/tests/generic/769 b/tests/generic/769
new file mode 100755
index 00000000..469d6344
--- /dev/null
+++ b/tests/generic/769
@@ -0,0 +1,101 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2025 IBM Corporation. All Rights Reserved.
+#
+# FS QA Test 769
+#
+# 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
+
+function max()
+{
+ if (( $1 > $2 )); then
+ echo "$1"
+ else
+ echo "$2"
+ fi
+}
+
+_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 $SCRATCH_MNT)
+
+fio_config=$tmp.fio
+fio_out=$tmp.fio.out
+
+FIO_LOAD=$(($(nproc) * 2 * LOAD_FACTOR))
+SIZE=$((128 * 1024 * 1024))
+
+cat >$fio_config <<EOF
+[global]
+ioengine=libaio
+fallocate=none
+filename=$SCRATCH_MNT/test-file
+filesize=$SIZE
+bs=$fsbsize
+direct=1
+verify=0
+group_reporting=1
+
+# Create written extents
+[written_blocks]
+stonewall
+ioengine=libaio
+rw=randwrite
+io_size=$((SIZE/3))
+random_generator=lfsr
+
+# Create unwritten extents
+[unwritten_blocks]
+stonewall
+ioengine=falloc
+rw=randwrite
+io_size=$((SIZE/3))
+random_generator=lfsr
+
+# atomic write to mixed mappings of written/unwritten/holes
+[atomic_write_aio_dio_job]
+stonewall
+direct=1
+ioengine=libaio
+rw=randwrite
+bs=$aw_bsize
+iodepth=$FIO_LOAD
+numjobs=$FIO_LOAD
+size=$SIZE
+random_generator=lfsr
+verify_state_save=0
+verify=crc32c
+verify_fatal=1
+verify_dump=0
+verify_backlog=1024
+verify_async=4
+verify_write_sequence=0
+atomic=1
+EOF
+
+_require_fio $fio_config
+
+cat $fio_config >> $seqres.full
+$FIO_PROG $fio_config --output=$fio_out
+cat $fio_out >> $seqres.full
+
+# success, all done
+echo Silence is golden
+status=0
+exit
diff --git a/tests/generic/769.out b/tests/generic/769.out
new file mode 100644
index 00000000..1512b439
--- /dev/null
+++ b/tests/generic/769.out
@@ -0,0 +1,2 @@
+QA output created by 769
+Silence is golden
--
2.49.0
