Re: [PATCH 4/6] generic: test swapfile creation, activation, and deactivation

[Eryu Guan <guaneryu@gmail.com>]

On Tue, Jun 05, 2018 at 09:43:20AM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
> 
> Test swapfile activation and deactivation.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> ---
>  tests/generic/708     |  115 +++++++++++++++++++++++++++++++++++++++++++++++++
>  tests/generic/708.out |    8 +++
>  tests/generic/709     |   91 +++++++++++++++++++++++++++++++++++++++
>  tests/generic/709.out |    3 +
>  tests/generic/710     |   94 ++++++++++++++++++++++++++++++++++++++++
>  tests/generic/710.out |    3 +
>  tests/generic/group   |    3 +
>  7 files changed, 317 insertions(+)
>  create mode 100755 tests/generic/708
>  create mode 100644 tests/generic/708.out
>  create mode 100755 tests/generic/709
>  create mode 100644 tests/generic/709.out
>  create mode 100755 tests/generic/710
>  create mode 100644 tests/generic/710.out
> 
> 
> diff --git a/tests/generic/708 b/tests/generic/708
> new file mode 100755
> index 00000000..dc3c2924
> --- /dev/null
> +++ b/tests/generic/708
> @@ -0,0 +1,115 @@
> +#! /bin/bash
> +# FS QA Test No. 708
> +#
> +# Test various swapfile activation oddities.
> +#
> +#-----------------------------------------------------------------------
> +# Copyright (c) 2018 Oracle.  All Rights Reserved.
> +#
> +# This program is free software; you can redistribute it and/or
> +# modify it under the terms of the GNU General Public License as
> +# published by the Free Software Foundation.
> +#
> +# This program is distributed in the hope that it would be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program; if not, write the Free Software Foundation,
> +# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
> +#
> +#-----------------------------------------------------------------------
> +
> +seq=`basename $0`
> +seqres=$RESULT_DIR/$seq
> +echo "QA output created by $seq"
> +
> +status=1	# failure is the default!
> +trap "_cleanup; exit \$status" 0 1 2 3 15
> +
> +_cleanup()
> +{
> +	cd /
> +	swapoff $swapfile 2> /dev/null
> +	rm -f $swapfile

No need to remove $swapfile which is on $SCRATCH_DEV, but need to remove
$tmp.* :)

(Same in other tests)

> +}
> +
> +# get standard environment, filters and checks
> +. ./common/rc
> +. ./common/filter
> +
> +# remove previous $seqres.full before test
> +rm -f $seqres.full
> +
> +# real QA test starts here
> +_supported_fs generic
> +_supported_os Linux
> +_require_scratch_swapfile
> +_require_test_program mkswap
> +_require_test_program swapon

Need _require_xfs_io_command "fcollapse" too, and add 'collapse' group.

> +
> +rm -f $seqres.full
> +_scratch_mkfs >>$seqres.full 2>&1
> +_scratch_mount >>$seqres.full 2>&1
> +
> +swapfile=$SCRATCH_MNT/swap
> +len=$((2 * 1048576))
> +page_size=$(get_page_size)
> +
> +swapfile_cycle() {
> +	local swapfile="$1"
> +
> +	$CHATTR_PROG +C $swapfile >> $seqres.full 2>&1
> +	"$here/src/mkswap" $swapfile >> $seqres.full
> +	"$here/src/swapon" $swapfile 2>&1 | _filter_scratch
> +	swapoff $swapfile 2>> $seeqres.full
> +	rm -f $swapfile
> +}
> +
> +# Create a regular swap file
> +echo "regular swap" | tee -a $seqres.full
> +_pwrite_byte 0x58 0 $len $swapfile >> $seqres.full
> +swapfile_cycle $swapfile
> +
> +# Create a sparse swap file
> +echo "sparse swap" | tee -a $seqres.full
> +$XFS_IO_PROG -f -c "truncate $len" $swapfile >> $seqres.full
> +swapfile_cycle $swapfile

This is already covered by generic/495.

> +
> +# Create a swap file with a little too much junk on the end
> +echo "too long swap" | tee -a $seqres.full
> +_pwrite_byte 0x58 0 $((len + 3)) $swapfile >> $seqres.full
> +swapfile_cycle $swapfile
> +
> +# Create a swap file with a large discontiguous range(?)
> +echo "large discontig swap" | tee -a $seqres.full
> +_pwrite_byte 0x58 0 $((len * 2)) $swapfile >> $seqres.full
> +old_sz="$(stat -c '%s' $swapfile)"
> +$XFS_IO_PROG -c "fcollapse $((len / 2)) $len" $swapfile >> $seqres.full 2>&1
> +new_sz="$(stat -c '%s' $swapfile)"
> +if [ $old_sz -gt $new_sz ]; then
> +	swapfile_cycle $swapfile
> +fi
> +rm -f $swapfile
> +
> +# Create a swap file with a small discontiguous range(?)
> +echo "small discontig swap" | tee -a $seqres.full
> +_pwrite_byte 0x58 0 $((len + 1024)) $swapfile >> $seqres.full
> +old_sz="$(stat -c '%s' $swapfile)"
> +$XFS_IO_PROG -c "fcollapse 66560 1024" $swapfile >> $seqres.full 2>&1
> +new_sz="$(stat -c '%s' $swapfile)"
> +if [ $old_sz -gt $new_sz ]; then
> +	swapfile_cycle $swapfile
> +fi
> +rm -f $swapfile

Above two cases are duplicated in generic/710 below? Perhaps generic/710
could be dropped.

Thanks,
Eryu

> +
> +# Create a ridiculously small swap file.  Each swap file must have at least
> +# two pages after the header page.
> +echo "tiny swap" | tee -a $seqres.full
> +tiny_len=$((page_size * 3))
> +_pwrite_byte 0x58 0 $tiny_len $swapfile >> $seqres.full
> +swapfile_cycle $swapfile
> +
> +status=0
> +exit
> diff --git a/tests/generic/708.out b/tests/generic/708.out
> new file mode 100644
> index 00000000..d002974c
> --- /dev/null
> +++ b/tests/generic/708.out
> @@ -0,0 +1,8 @@
> +QA output created by 708
> +regular swap
> +sparse swap
> +swapon: Invalid argument
> +too long swap
> +large discontig swap
> +small discontig swap
> +tiny swap
> diff --git a/tests/generic/709 b/tests/generic/709
> new file mode 100755
> index 00000000..5e636305
> --- /dev/null
> +++ b/tests/generic/709
> @@ -0,0 +1,91 @@
> +#! /bin/bash
> +# FS QA Test No. 709
> +#
> +# Test various swapfile activation oddities on filesystems that support
> +# fallocated swapfiles.
> +#
> +#-----------------------------------------------------------------------
> +# Copyright (c) 2018 Oracle.  All Rights Reserved.
> +#
> +# This program is free software; you can redistribute it and/or
> +# modify it under the terms of the GNU General Public License as
> +# published by the Free Software Foundation.
> +#
> +# This program is distributed in the hope that it would be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program; if not, write the Free Software Foundation,
> +# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
> +#
> +#-----------------------------------------------------------------------
> +
> +seq=`basename $0`
> +seqres=$RESULT_DIR/$seq
> +echo "QA output created by $seq"
> +
> +status=1	# failure is the default!
> +trap "_cleanup; exit \$status" 0 1 2 3 15
> +
> +_cleanup()
> +{
> +	cd /
> +	swapoff $swapfile 2> /dev/null
> +	rm -f $swapfile
> +}
> +
> +# get standard environment, filters and checks
> +. ./common/rc
> +. ./common/filter
> +
> +# remove previous $seqres.full before test
> +rm -f $seqres.full
> +
> +# real QA test starts here
> +_supported_fs generic
> +_supported_os Linux
> +_require_scratch_swapfile
> +_require_test_program mkswap
> +_require_test_program swapon
> +_require_xfs_io_command "falloc"
> +
> +rm -f $seqres.full
> +_scratch_mkfs >>$seqres.full 2>&1
> +_scratch_mount >>$seqres.full 2>&1
> +
> +swapfile=$SCRATCH_MNT/swap
> +len=$((2 * 1048576))
> +page_size=$(get_page_size)
> +
> +swapfile_cycle() {
> +	local swapfile="$1"
> +
> +	$CHATTR_PROG +C $swapfile >> $seqres.full 2>&1
> +	"$here/src/mkswap" $swapfile >> $seqres.full
> +	"$here/src/swapon" $swapfile 2>&1 | _filter_scratch
> +	swapoff $swapfile 2>> $seeqres.full
> +	rm -f $swapfile
> +}
> +
> +# Create a fallocated swap file
> +echo "fallocate swap" | tee -a $seqres.full
> +$XFS_IO_PROG -f -c "falloc 0 $len" $swapfile >> $seqres.full
> +$CHATTR_PROG +C $swapfile >> $seqres.full 2>&1
> +"$here/src/mkswap" $swapfile
> +"$here/src/swapon" $swapfile >> $seqres.full 2>&1 || \
> +	_notrun "fallocated swap not supported here"
> +swapoff $swapfile
> +
> +# Create a fallocated swap file and touch every other $PAGE_SIZE to create
> +# a mess of written/unwritten extent records
> +echo "mixed swap" | tee -a $seqres.full
> +$XFS_IO_PROG -f -c "falloc 0 $len" $swapfile >> $seqres.full
> +seq $page_size $((page_size * 2)) $len | while read offset; do
> +	_pwrite_byte 0x58 $offset 1 $swapfile >> $seqres.full
> +done
> +swapfile_cycle $swapfile
> +
> +status=0
> +exit
> diff --git a/tests/generic/709.out b/tests/generic/709.out
> new file mode 100644
> index 00000000..90ba38ae
> --- /dev/null
> +++ b/tests/generic/709.out
> @@ -0,0 +1,3 @@
> +QA output created by 709
> +fallocate swap
> +mixed swap
> diff --git a/tests/generic/710 b/tests/generic/710
> new file mode 100755
> index 00000000..e9dc3f08
> --- /dev/null
> +++ b/tests/generic/710
> @@ -0,0 +1,94 @@
> +#! /bin/bash
> +# FS QA Test No. 710
> +#
> +# Test various swapfile activation oddities, having used fcollapse to
> +# create discontiguous ranges in the file.
> +#
> +#-----------------------------------------------------------------------
> +# Copyright (c) 2018 Oracle.  All Rights Reserved.
> +#
> +# This program is free software; you can redistribute it and/or
> +# modify it under the terms of the GNU General Public License as
> +# published by the Free Software Foundation.
> +#
> +# This program is distributed in the hope that it would be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program; if not, write the Free Software Foundation,
> +# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
> +#
> +#-----------------------------------------------------------------------
> +
> +seq=`basename $0`
> +seqres=$RESULT_DIR/$seq
> +echo "QA output created by $seq"
> +
> +status=1	# failure is the default!
> +trap "_cleanup; exit \$status" 0 1 2 3 15
> +
> +_cleanup()
> +{
> +	cd /
> +	swapoff $swapfile 2> /dev/null
> +	rm -f $swapfile
> +}
> +
> +# get standard environment, filters and checks
> +. ./common/rc
> +. ./common/filter
> +
> +# remove previous $seqres.full before test
> +rm -f $seqres.full
> +
> +# real QA test starts here
> +_supported_fs generic
> +_supported_os Linux
> +_require_scratch_swapfile
> +_require_test_program mkswap
> +_require_test_program swapon
> +_require_xfs_io_command "fcollapse"
> +
> +rm -f $seqres.full
> +_scratch_mkfs >>$seqres.full 2>&1
> +_scratch_mount >>$seqres.full 2>&1
> +
> +swapfile=$SCRATCH_MNT/swap
> +len=$((2 * 1048576))
> +page_size=$(get_page_size)
> +
> +swapfile_cycle() {
> +	local swapfile="$1"
> +
> +	"$here/src/mkswap" $swapfile >> $seqres.full
> +	"$here/src/swapon" $swapfile 2>&1 | _filter_scratch
> +	swapoff $swapfile 2>> $seeqres.full
> +	rm -f $swapfile
> +}
> +
> +# Create a swap file with a large discontiguous range(?)
> +echo "large discontig swap" | tee -a $seqres.full
> +_pwrite_byte 0x58 0 $((len * 2)) $swapfile >> $seqres.full
> +old_sz="$(stat -c '%s' $swapfile)"
> +$XFS_IO_PROG -c "fcollapse $((len / 2)) $len" $swapfile >> $seqres.full 2>&1
> +new_sz="$(stat -c '%s' $swapfile)"
> +if [ $old_sz -gt $new_sz ]; then
> +	swapfile_cycle $swapfile
> +fi
> +rm -f $swapfile
> +
> +# Create a swap file with a small discontiguous range(?)
> +echo "small discontig swap" | tee -a $seqres.full
> +_pwrite_byte 0x58 0 $((len + 1024)) $swapfile >> $seqres.full
> +old_sz="$(stat -c '%s' $swapfile)"
> +$XFS_IO_PROG -c "fcollapse 66560 1024" $swapfile >> $seqres.full 2>&1
> +new_sz="$(stat -c '%s' $swapfile)"
> +if [ $old_sz -gt $new_sz ]; then
> +	swapfile_cycle $swapfile
> +fi
> +rm -f $swapfile
> +
> +status=0
> +exit
> diff --git a/tests/generic/710.out b/tests/generic/710.out
> new file mode 100644
> index 00000000..ba1f8e40
> --- /dev/null
> +++ b/tests/generic/710.out
> @@ -0,0 +1,3 @@
> +QA output created by 710
> +large discontig swap
> +small discontig swap
> diff --git a/tests/generic/group b/tests/generic/group
> index 4339c64c..6d747450 100644
> --- a/tests/generic/group
> +++ b/tests/generic/group
> @@ -497,3 +497,6 @@
>  493 auto quick swap
>  494 auto quick swap punch
>  495 auto quick swap
> +708 auto quick swap
> +709 auto quick swap
> +710 auto quick swap collapse
>