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Signed-off-by: Hans Holmberg --- Test results in my setup (kernel 6.8.0-rc4+) f2fs on zoned nullblk: pass (77s) f2fs on conventional nvme ssd: pass (13s) btrfs on zoned nublk: fails (-ENOSPC) btrfs on conventional nvme ssd: fails (-ENOSPC) xfs on conventional nvme ssd: pass (8s) Johannes(cc) is working on the btrfs ENOSPC issue. =20 tests/generic/744 | 124 ++++++++++++++++++++++++++++++++++++++++++ tests/generic/744.out | 6 ++ 2 files changed, 130 insertions(+) create mode 100755 tests/generic/744 create mode 100644 tests/generic/744.out diff --git a/tests/generic/744 b/tests/generic/744 new file mode 100755 index 000000000000..2c7ab76bf8b1 --- /dev/null +++ b/tests/generic/744 @@ -0,0 +1,124 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2024 Western Digital Corporation. All Rights Reserved. +# +# FS QA Test No. 744 +# +# Inspired by btrfs/273 and generic/015 +# +# This test stresses garbage collection in file systems +# by first filling up a scratch mount to a specific usage point with +# files of random size, then doing overwrites in parallel with +# deletes to fragment the backing zones, forcing reclaim. + +. ./common/preamble +_begin_fstest auto + +# real QA test starts here + +_require_scratch + +# This test requires specific data space usage, skip if we have compressio= n +# enabled. +_require_no_compress + +M=3D$((1024 * 1024)) +min_fsz=3D$((1 * ${M})) +max_fsz=3D$((256 * ${M})) +bs=3D${M} +fill_percent=3D95 +overwrite_percentage=3D20 +seq=3D0 + +_create_file() { + local file_name=3D${SCRATCH_MNT}/data_$1 + local file_sz=3D$2 + local dd_extra=3D$3 + + POSIXLY_CORRECT=3Dyes dd if=3D/dev/zero of=3D${file_name} \ + bs=3D${bs} count=3D$(( $file_sz / ${bs} )) \ + status=3Dnone $dd_extra 2>&1 + + status=3D$? + if [ $status -ne 0 ]; then + echo "Failed writing $file_name" >>$seqres.full + exit + fi +} + +_total_M() { + local total=3D$(stat -f -c '%b' ${SCRATCH_MNT}) + local bs=3D$(stat -f -c '%S' ${SCRATCH_MNT}) + echo $(( ${total} * ${bs} / ${M})) +} + +_used_percent() { + local available=3D$(stat -f -c '%a' ${SCRATCH_MNT}) + local total=3D$(stat -f -c '%b' ${SCRATCH_MNT}) + echo $((100 - (100 * ${available}) / ${total} )) +} + + +_delete_random_file() { + local to_delete=3D$(find ${SCRATCH_MNT} -type f | shuf | head -1) + rm $to_delete + sync ${SCRATCH_MNT} +} + +_get_random_fsz() { + local r=3D$RANDOM + echo $(( ${min_fsz} + (${max_fsz} - ${min_fsz}) * (${r} % 100) / 100 )) +} + +_direct_fillup () { + while [ $(_used_percent) -lt $fill_percent ]; do + local fsz=3D$(_get_random_fsz) + + _create_file $seq $fsz "oflag=3Ddirect conv=3Dfsync" + seq=3D$((${seq} + 1)) + done +} + +_mixed_write_delete() { + local dd_extra=3D$1 + local total_M=3D$(_total_M) + local to_write_M=3D$(( ${overwrite_percentage} * ${total_M} / 100 )) + local written_M=3D0 + + while [ $written_M -lt $to_write_M ]; do + if [ $(_used_percent) -lt $fill_percent ]; then + local fsz=3D$(_get_random_fsz) + + _create_file $seq $fsz "$dd_extra" + written_M=3D$((${written_M} + ${fsz}/${M})) + seq=3D$((${seq} + 1)) + else + _delete_random_file + fi + done +} + +seed=3D$RANDOM +RANDOM=3D$seed +echo "Running test with seed=3D$seed" >>$seqres.full + +_scratch_mkfs_sized $((8 * 1024 * 1024 * 1024)) >>$seqres.full +_scratch_mount + +echo "Starting fillup using direct IO" +_direct_fillup + +echo "Starting mixed write/delete test using direct IO" +_mixed_write_delete "oflag=3Ddirect" + +echo "Starting mixed write/delete test using buffered IO" +_mixed_write_delete "" + +echo "Syncing" +sync ${SCRATCH_MNT}/* + +echo "Done, all good" + +# success, all done +status=3D0 +exit diff --git a/tests/generic/744.out b/tests/generic/744.out new file mode 100644 index 000000000000..b40c2f43108e --- /dev/null +++ b/tests/generic/744.out @@ -0,0 +1,6 @@ +QA output created by 744 +Starting fillup using direct IO +Starting mixed write/delete test using direct IO +Starting mixed write/delete test using buffered IO +Syncing +Done, all good --=20 2.34.1