From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from userp2120.oracle.com ([156.151.31.85]:39514 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750947AbeECRtm (ORCPT ); Thu, 3 May 2018 13:49:42 -0400 Date: Thu, 3 May 2018 10:49:12 -0700 From: "Darrick J. Wong" Subject: [PATCH v3 2/2] generic: test swapfile creation, activation, and deactivation Message-ID: <20180503174912.GE4127@magnolia> References: <20180503174659.GD4127@magnolia> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180503174659.GD4127@magnolia> Sender: fstests-owner@vger.kernel.org To: xfs , linux-fsdevel , linux-mm@kvack.org Cc: hch@infradead.org, cyberax@amazon.com, jack@suse.cz, osandov@osandov.com, Eryu Guan , fstests List-ID: From: Darrick J. Wong Test swapfile activation and deactivation. Signed-off-by: Darrick J. Wong --- tests/generic/708 | 150 +++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/708.out | 10 +++ tests/generic/group | 1 3 files changed, 161 insertions(+) create mode 100755 tests/generic/708 create mode 100644 tests/generic/708.out diff --git a/tests/generic/708 b/tests/generic/708 new file mode 100755 index 00000000..1c576b39 --- /dev/null +++ b/tests/generic/708 @@ -0,0 +1,150 @@ +#! /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 / + rm -f $testfile +} + +# 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 + +rm -f $seqres.full +_scratch_mkfs >>$seqres.full 2>&1 +_scratch_mount >>$seqres.full 2>&1 + +swapfile=$SCRATCH_MNT/swap +len=$((2 * 1048576)) + +swapfile_cycle() { + local swapfile="$1" + + mkswap $swapfile >> $seqres.full + filefrag -v $swapfile >> $seqres.full + swapon $swapfile 2>&1 | _filter_scratch + swapon -v --bytes >> $seqres.full + swapoff $swapfile 2>> $seeqres.full + rm -f $swapfile +} + +test_can_falloc_swap() { + local test_swapfile=$TEST_DIR/swapfile + + echo "can we fallocate swap?" + $XFS_IO_PROG -f -c "falloc 0 64k" $test_swapfile + test -f $test_swapfile || return 1 + mkswap $test_swapfile + swapon $test_swapfile + res=$? + swapoff $test_swapfile + rm -f $test_swapfile + return $res +} + +unset can_falloc_swap +test_can_falloc_swap >> $seqres.full 2>&1 && can_falloc_swap=yes +page_size=$(get_page_size) + +# 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 + +# 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 fallocated swap file +echo "fallocate swap" | tee -a $seqres.full +if [ -n "$can_falloc_swap" ]; then + $XFS_IO_PROG -f -c "falloc 0 $len" $swapfile >> $seqres.full + swapfile_cycle $swapfile +fi + +# 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 + +# 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 $seqres.full +if [ -n "$can_falloc_swap" ]; then + $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 +fi + +# Create a ridiculously small swap file; mkswap says the minimum is 40k. +echo "tiny swap" | tee -a $seqres.full +tiny_len=40960 +if [ "$page_size" -gt "$tiny_len" ]; then + tiny_len=$page_size +fi +_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..d6199b99 --- /dev/null +++ b/tests/generic/708.out @@ -0,0 +1,10 @@ +QA output created by 708 +sparse swap +swapon: SCRATCH_MNT/swap: skipping - it appears to have holes. +regular swap +fallocate swap +too long swap +large discontig swap +small discontig swap +mixed swap +tiny swap diff --git a/tests/generic/group b/tests/generic/group index 49f5cbe1..94cbcee9 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -489,3 +489,4 @@ 484 auto quick 600 auto quick insert 706 auto quick attr +708 auto quick swapfile