From: Ira Weiny <ira.weiny@xxxxxxxxx> Add XXX to test the various setting of dax flags on files. The final fsx test was derived from Christophs test here but I wanted more direct function tests as well so I bundled this together. https://www.spinics.net/lists/linux-xfs/msg10124.html Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx> --- This is the test case I am using to test the series submitted earlier today. https://lkml.org/lkml/2020/1/10/864 For my testing I left the fsx tests in a loop which runs for hours rather than this. I've also debated moving this to xfs but I intend for ext4 to support this as well so I have left it in generic for this RFC. --- tests/generic/999 | 282 ++++++++++++++++++++++++++++++++++++++++++ tests/generic/999.out | 21 ++++ tests/generic/group | 1 + 3 files changed, 304 insertions(+) create mode 100755 tests/generic/999 create mode 100644 tests/generic/999.out diff --git a/tests/generic/999 b/tests/generic/999 new file mode 100755 index 000000000000..6dd5529dbc65 --- /dev/null +++ b/tests/generic/999 @@ -0,0 +1,282 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2019 Intel, Corp. All Rights Reserved. +# +# FSQA Test No. 999 (temporary) +# +# Test setting of DAX flag +# +seq=`basename $0` +seqres=$RESULT_DIR/$seq +echo "QA output created by $seq" + +here=`pwd` +status=1 # failure is the default! + +dax_dir=$TEST_DIR/dax-dir +dax_sub_dir=$TEST_DIR/dax-dir/dax-sub-dir +dax_inh_file=$dax_dir/dax-inh-file +dax_non_inh_file=$dax_dir/dax-non-inh-file +non_dax=$TEST_DIR/non-dax +dax_file=$TEST_DIR/dax-file +dax_file_copy=$TEST_DIR/dax-file-copy +dax_file_move=$TEST_DIR/dax-file-move +data_file=$TEST_DIR/data-file + +_cleanup() { + rm -rf $TEST_DIR/* +} + +trap "_cleanup ; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common/rc + +# real QA test starts here +_supported_os Linux +_require_xfs_io_command "lsattr" +_require_xfs_io_command "chattr" "x" +_require_xfs_io_command "statx" +_require_test + +function mount_no_dax { + # mount SCRATCH_DEV with dax option, TEST_DEV not + export MOUNT_OPTIONS="" + export TEST_FS_MOUNT_OPTS="" + _test_unmount + _test_mount + _fs_options $TEST_DEV | grep -qw "dax" + if [ "$?" == "0" ]; then + _notrun "we need $TEST_DEV mount without dax" + fi +} + +function mount_dax { + # mount SCRATCH_DEV with dax option, TEST_DEV not + export MOUNT_OPTIONS="" + export TEST_FS_MOUNT_OPTS="" + _test_unmount + _test_mount "-o dax" + _fs_options $TEST_DEV | grep -qw "dax" + if [ "$?" != "0" ]; then + _notrun "we need $TEST_DEV mount with dax" + fi +} + +function check_phys_dax { + xfs_io -c 'lsattr' $1 | awk -e '{ print $1 }' | grep 'x' &> /dev/null + if [ "$?" != "0" ]; then + echo "FAILED: Did NOT find DAX flag on $1" + status=1; exit + fi +} + +function check_effective_dax { + attr=`xfs_io -c 'statx -r' $1 | grep 'stat.attributes' | awk -e '{ print $3 }'` + masked=$(( $attr & 0x2000 )) + if [ "$masked" != "8192" ]; then + echo "FAILED: Did NOT find VFS DAX flag on $1" + status=1; exit + fi +} + +function check_phys_no_dax { + xfs_io -c 'lsattr' $1 | awk -e '{ print $1 }' | grep 'x' &> /dev/null + if [ "$?" == "0" ]; then + echo "FAILED: Found DAX flag on $1" + status=1; exit + fi +} + +function check_effective_no_dax { + attr=`xfs_io -c 'statx -r' $1 | grep 'stat.attributes' | awk -e '{ print $3 }'` + masked=$(( $attr & 0x2000 )) + if [ "$masked" == "8192" ]; then + echo "FAILED: Found VFS DAX flag on $1" + status=1; exit + fi +} + +echo "running tests..." + +echo " *** mount w/o dax flag." +mount_no_dax + +echo " *** mark dax-dir as dax enabled" +mkdir $dax_dir +xfs_io -c 'chattr +x' $dax_dir +check_phys_dax $dax_dir +check_effective_dax $dax_dir + +echo " *** check file inheritance" +touch $dax_inh_file +check_phys_dax $dax_inh_file +check_effective_dax $dax_inh_file + +echo " *** check directory inheritance" +mkdir $dax_sub_dir +check_phys_dax $dax_sub_dir +check_effective_dax $dax_sub_dir + +echo " *** check changing directory" +xfs_io -c 'chattr -x' $dax_dir +check_phys_no_dax $dax_dir +check_effective_no_dax $dax_dir + +echo " *** check non file inheritance" +touch $dax_non_inh_file +check_phys_no_dax $dax_non_inh_file +check_effective_no_dax $dax_non_inh_file + +echo " *** check that previous file stays enabled" +check_phys_dax $dax_inh_file +check_effective_dax $dax_inh_file + +echo " *** Reset the directory" +xfs_io -c 'chattr +x' $dax_dir +check_phys_dax $dax_dir +check_effective_dax $dax_dir + + +# check mount override +# ==================== + +echo " *** Remount fs with mount flag" +mount_dax +touch $non_dax +check_phys_no_dax $non_dax +check_effective_dax $non_dax + +echo " *** Check for non-dax files to be dax with mount option" +check_effective_dax $dax_non_inh_file + +echo " *** check for file dax flag 'sticky-ness' after remount" +touch $dax_file +xfs_io -c 'chattr +x' $dax_file +check_phys_dax $dax_file +check_effective_dax $dax_file + +echo " *** remount w/o mount flag" +mount_no_dax +check_phys_dax $dax_file +check_effective_dax $dax_file + +check_phys_no_dax $non_dax +check_effective_no_dax $non_dax + + +# Check non-zero file operations +# ============================== + +echo " *** file should change effective but page cache should be empty" +$XFS_IO_PROG -f -c "pwrite 0 10000" $data_file > /dev/null +xfs_io -c 'chattr +x' $data_file +check_phys_dax $data_file +check_effective_dax $data_file + + +# Check inheritance on cp, mv +# =========================== + +echo " *** check inheritance on cp, mv" +cp $non_dax $dax_dir/conv-dax +check_phys_dax $dax_dir/conv-dax +check_effective_dax $dax_dir/conv-dax + +echo " *** Moved files 'don't inherit'" +mv $non_dax $dax_dir/move-dax +check_phys_no_dax $dax_dir/move-dax +check_effective_no_dax $dax_dir/move-dax + +# Check preservation of phys on cp, mv +# ==================================== + +mv $dax_file $dax_file_move +check_phys_dax $dax_file_move +check_effective_dax $dax_file_move + +cp $dax_file_move $dax_file_copy +check_phys_no_dax $dax_file_copy +check_effective_no_dax $dax_file_copy + + +# Verify no mode changes on mmap +# ============================== + +echo " *** check no mode change when mmaped" + +dd if=/dev/zero of=$dax_file bs=4096 count=10 > $tmp.log 2>&1 + +# set known state. +xfs_io -c 'chattr -x' $dax_file +check_phys_no_dax $dax_file +check_effective_no_dax $dax_file + +python3 - << EOF > $tmp.log 2>&1 & +import mmap +import time +print ('mmaping "$dax_file"') +f=open("$dax_file", "r+b") +mm = mmap.mmap(f.fileno(), 0) +print ('mmaped "$dax_file"') +while True: + time.sleep(1) +EOF +pid=$! + +sleep 1 + +# attempt to should fail +xfs_io -c 'chattr +x' $dax_file > /dev/null 2>&1 +check_phys_no_dax $dax_file +check_effective_no_dax $dax_file + +kill -TERM $pid > /dev/null 2>&1 +wait $pid > /dev/null 2>&1 + +# after mmap released should work +xfs_io -c 'chattr +x' $dax_file +check_phys_dax $dax_file +check_effective_dax $dax_file + + +# Finally run the test stolen from Christoph Hellwig to test changing the mode +# while performing a series of operations +# ============================================================================= + +function run_fsx { + options=$1 + + echo " *** run 'fsx $options' racing with setting/clearing the DAX flag" + $here/ltp/fsx $options -N 20000 $dax_file > $tmp.log 2>&1 & + pid=$! + + if [ ! -n "$pid" ]; then + echo "FAILED to start fsx" + exit 255 + fi + + # NOTE: fsx runs much faster than these mode changes. + for i in `seq 1 500`; do + xfs_io -c 'chattr +x' $dax_file > /dev/null 2>&1 + xfs_io -c 'chattr -x' $dax_file > /dev/null 2>&1 + done + + wait $pid + status=$? + if [ "$status" != "0" ]; then + cat /sys/kernel/debug/tracing/trace > trace_output + echo "FAILED: fsx exited with status : $status" + echo " see trace_output" + head $dax_file.fsxlog + exit $status + fi + pid="" +} + +run_fsx "" +run_fsx "-A" +run_fsx "-Z -r 4096 -w 4096" + + +status=0 ; exit diff --git a/tests/generic/999.out b/tests/generic/999.out new file mode 100644 index 000000000000..ccb13770ca4d --- /dev/null +++ b/tests/generic/999.out @@ -0,0 +1,21 @@ +QA output created by 999 +running tests... + *** mount w/o dax flag. + *** mark dax-dir as dax enabled + *** check file inheritance + *** check directory inheritance + *** check changing directory + *** check non file inheritance + *** check that previous file stays enabled + *** Reset the directory + *** Remount fs with mount flag + *** Check for non-dax files to be dax with mount option + *** check for file dax flag 'sticky-ness' after remount + *** remount w/o mount flag + *** file should change effective but page cache should be empty + *** check inheritance on cp, mv + *** Moved files 'don't inherit' + *** check no mode change when mmaped + *** run 'fsx ' racing with setting/clearing the DAX flag + *** run 'fsx -A' racing with setting/clearing the DAX flag + *** run 'fsx -Z -r 4096 -w 4096' racing with setting/clearing the DAX flag diff --git a/tests/generic/group b/tests/generic/group index 90da26c5b42c..c652494f7182 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -594,3 +594,4 @@ 589 auto mount 590 auto prealloc preallocrw 591 auto quick rw pipe splice +999 auto -- 2.21.0
