On Tue, Aug 04, 2020 at 09:11:40AM +0800, Xiao Yang wrote: > Change FS_XFLAG_DAX on an existing file and check if S_DAX on the > file can take effect immediately by the following steps: > 1) Stop all applications which are using the file. > 2) Do drop_caches or umount & mount cycle. Slightly related question: is there a test to check that if a filesystem recognizes dax=always, it will also accept dax=inode and dax=none? This test checks that dax=always and dax=inode work, but I don't think I saw one that tests dax=always ensuring that dax=none works too. > Signed-off-by: Xiao Yang <yangx.jy@xxxxxxxxxxxxxx> Seems decent otherwise, Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> --D > --- > > Note: It is based on the following patch set: > https://www.spinics.net/lists/fstests/msg14457.html > > tests/generic/608 | 110 ++++++++++++++++++++++++++++++++++++++++++ > tests/generic/608.out | 2 + > tests/generic/group | 1 + > 3 files changed, 113 insertions(+) > create mode 100644 tests/generic/608 > create mode 100644 tests/generic/608.out > > diff --git a/tests/generic/608 b/tests/generic/608 > new file mode 100644 > index 00000000..33c5235d > --- /dev/null > +++ b/tests/generic/608 > @@ -0,0 +1,110 @@ > +#! /bin/bash > +# SPDX-License-Identifier: GPL-2.0 > +# Copyright (c) 2020 Fujitsu. All Rights Reserved. > +# > +# FS QA Test 608 > +# Change FS_XFLAG_DAX on an existing file and check if S_DAX on > +# the file can take effect immediately by the following steps: > +# 1) Stop all applications which are using the file. > +# 2) Do drop_caches or umount & mount cycle. > + > +seq=`basename $0` > +seqres=$RESULT_DIR/$seq > +echo "QA output created by $seq" > + > +here=`pwd` > +tmp=/tmp/$$ > +status=1 # failure is the default! > +trap "_cleanup; exit \$status" 0 1 2 3 15 > + > +_cleanup() > +{ > + cd / > + rm -f $tmp.* > +} > + > +# get standard environment, filters and checks > +. ./common/rc > +. ./common/filter > + > +# remove previous $seqres.full before test > +rm -f $seqres.full > + > +_supported_fs generic > +_supported_os Linux > +_require_scratch_dax_mountopt "dax=always" > +_require_dax_iflag > +_require_xfs_io_command "lsattr" "-v" > +_require_xfs_io_command "statx" "-r" > + > +test_drop_caches() > +{ > + local t_file=$SCRATCH_MNT/testfile > + > + rm -f $t_file > + touch $t_file > + _check_xflag $t_file 0 > + _check_s_dax $t_file 0 > + > + exec 3< $t_file > + > + $XFS_IO_PROG -c 'chattr +x' $t_file > + _check_xflag $t_file 1 > + _check_s_dax $t_file 0 > + > + # One application is using test file and check if S_DAX on > + # the file doesn't take effect immediately by drop_caches > + echo 2 > /proc/sys/vm/drop_caches > + _check_s_dax $t_file 0 > + > + exec 3<&- > + > + # No application is using test file and check if S_DAX on > + # the file takes effect immediately by drop_caches > + echo 2 > /proc/sys/vm/drop_caches > + _check_s_dax $t_file 1 > +} > + > +test_cycle_mount() > +{ > + local t_dir=$SCRATCH_MNT/testdir > + local t_file=$t_dir/testfile > + > + mkdir -p $t_dir > + $XFS_IO_PROG -c 'chattr +x' $t_dir > + rm -f $t_file > + touch $t_file > + _check_xflag $t_file 1 > + _check_s_dax $t_file 1 > + > + exec 3< $t_file > + > + $XFS_IO_PROG -c 'chattr -x' $t_file > + _check_xflag $t_file 0 > + _check_s_dax $t_file 1 > + > + exec 3<&- > + > + # No application is using test file and check if S_DAX on > + # the file takes effect immediately by umount & mount > + _scratch_cycle_mount "dax=inode" > + _check_s_dax $t_file 0 > +} > + > +do_tests() > +{ > + test_drop_caches > + > + test_cycle_mount > +} > + > +_scratch_mkfs >> $seqres.full 2>&1 > + > +_scratch_mount "-o dax=inode" > + > +do_tests > + > +# success, all done > +echo "Silence is golden" > +status=0 > +exit > diff --git a/tests/generic/608.out b/tests/generic/608.out > new file mode 100644 > index 00000000..1e534458 > --- /dev/null > +++ b/tests/generic/608.out > @@ -0,0 +1,2 @@ > +QA output created by 608 > +Silence is golden > diff --git a/tests/generic/group b/tests/generic/group > index 5bd289c3..aa969bcb 100644 > --- a/tests/generic/group > +++ b/tests/generic/group > @@ -610,3 +610,4 @@ > 605 auto attr quick dax > 606 auto attr quick dax > 607 auto attr quick dax > +608 auto attr quick dax > -- > 2.21.0 > > >
