On Thu, Nov 02, 2017 at 11:16:27PM +0800, Eryu Guan wrote:
> On Wed, Nov 01, 2017 at 02:47:54PM -0700, Darrick J. Wong wrote:
> > From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> >
> > Make sure we can write to and read from the highest possible offset
> > that Linux will allow. Format the filesystem with a variety of
> > possible blocksizes to stress the filesystem.
> >
> > Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> > ---
> > tests/generic/705 | 97 +++++++++++++++++++++++++++++++++++++++++++++++++
> > tests/generic/705.out | 2 +
> > tests/generic/group | 1 +
> > 3 files changed, 100 insertions(+)
> > create mode 100755 tests/generic/705
> > create mode 100644 tests/generic/705.out
> >
> >
> > diff --git a/tests/generic/705 b/tests/generic/705
> > new file mode 100755
> > index 0000000..4ab97e5
> > --- /dev/null
> > +++ b/tests/generic/705
> > @@ -0,0 +1,97 @@
> > +#! /bin/bash
> > +# FS QA Test No. 705
> > +#
> > +# Check that high-offset reads and writes work.
> > +#
> > +#-----------------------------------------------------------------------
> > +# Copyright (c) 2017, Oracle and/or its affiliates. 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"
> > +
> > +here=`pwd`
> > +tmp=/tmp/$$
> > +status=1 # failure is the default!
> > +trap "_cleanup; exit \$status" 0 1 2 3 15
> > +
> > +_cleanup()
> > +{
> > + cd /
> > + rm -rf $tmp.*
> > +}
> > +
> > +# get standard environment, filters and checks
> > +. ./common/rc
> > +. ./common/filter
> > +
> > +# real QA test starts here
> > +_supported_os Linux
> > +_require_scratch
>
> As we do _check_scratch_fs after each loop, _require_scratch_nocheck
> should be OK here.
Ok.
> > +
> > +rm -f $seqres.full
> > +
> > +echo "Silence is golden"
> > +
> > +echo "Starting test" > $seqres.full
> > +for blocksize in 512 1024 2048 4096 8192 16384 32768 65536; do
> > + echo "+ Format blocksize $blocksize and mount" >> $seqres.full
> > + devsize=$(blockdev --getsize64 $SCRATCH_DEV)
> > + _scratch_unmount > /dev/null 2>&1
> > + # Try to format and mount with the given blocksize. If they don't
> > + # succeed, move on to the next block size.
> > + if ! _scratch_mkfs_sized $devsize $blocksize >> $seqres.full 2>&1 ||
> > + ! _scratch_mount >> $seqres.full 2>&1 ||
> > + test "$(stat -f -c '%S' $SCRATCH_MNT)" -ne "$blocksize"; then
> > + echo "+++ Format and mount failed" >> $seqres.full
> > + continue
>
> We need to unset MKFS_OPTIONS before this loop, because
> _scratch_mkfs_sized takes the block size specified in MKFS_OPTIONS as
> the default size and ignores the second argument, the provided block
> size is only used if no block size specified in MKFS_OPTIONS.
Ok. I've occasionally wondered if it would be useful to have a helper
that filters out the block size options from MKFS_OPTIONS so that we can
test whatever other mkfs options the testrunner specified, but with
various block sizes?
> > + fi
> > +
> > + testdir=$SCRATCH_MNT/test-$seq
> > + mkdir $testdir
> > +
> > + echo "++ Create the original files" >> $seqres.full
> > + bigoff=9223372036854775806
> > + len=9223372036854775807
>
> Calculating the numbers might be easier to read, e.g.
>
> len=`echo "2^63-1" | $BC_PROG`
> bigoff=`echo "$len-1" | $BC_PROG`
Ok.
(FWIW I copypasta'd this straight out of generic/303.)
> Thanks,
> Eryu
>
> > + $XFS_IO_PROG -f -c "truncate $len" $testdir/file0 >> $seqres.full 2>&1
> > + if [ ! -s $testdir/file0 ]; then
> > + # If we can't set a large file size then don't bother
> > + # with this blocksize because the fs doesn't support it.
> > + echo "+++ High offset ftruncate failed" >> $seqres.full
> > + continue
> > + fi
> > + _pwrite_byte 0x61 $bigoff 1 $testdir/file1 >> $seqres.full
> > +
> > + echo "++ Check file creation" >> $seqres.full
> > + _scratch_cycle_mount
> > +
> > + expected="7ffffffffffffffe: 61 a"
> > + actual="$($XFS_IO_PROG -c "pread -v -q $bigoff 1" $testdir/file1)"
> > + if [ "$expected" = "$actual" ]; then
> > + echo "+++ Success!" >> $seqres.full
> > + else
> > + echo "+++ Discrepancy @ blocksize $blocksize" >> $seqres.full
> > + echo "Discrepancy @ blocksize $blocksize"
> > + fi
> > +
> > + echo "++ Check scratchfs" >> $seqres.full
> > + _check_scratch_fs
> > +done
> > +
> > +# success, all done
> > +status=0
> > +exit
> > diff --git a/tests/generic/705.out b/tests/generic/705.out
> > new file mode 100644
> > index 0000000..6fcdec0
> > --- /dev/null
> > +++ b/tests/generic/705.out
> > @@ -0,0 +1,2 @@
> > +QA output created by 705
> > +Silence is golden
> > diff --git a/tests/generic/group b/tests/generic/group
> > index fbe0a7f..2c55b93 100644
> > --- a/tests/generic/group
> > +++ b/tests/generic/group
> > @@ -468,3 +468,4 @@
> > 463 auto quick clone dangerous
> > 464 auto rw
> > 465 auto rw quick aio
> > +705 auto quick rw
> >
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