Re: [PATCH] xfs/424: test xfs_db to ensure type size taken into account with new type

["Bill O'Donnell" <billodo@redhat.com>]

On Fri, Jul 14, 2017 at 10:42:57AM -0500, Eric Sandeen wrote:
> 
> 
> On 07/14/2017 09:27 AM, Bill O'Donnell wrote:
> > xfs_db should take type size into account when setting type.
> > If type size isn't updated whenever type is set, a false crc
> > error can occur due to the stale size. This test checks for
> > that false crc error.
> > 
> > Signed-off-by: Bill O'Donnell <billodo@redhat.com>
> > ---
> > v2: Clarify commit message and test comments. Add a few more test cases.
> > 
> >  tests/xfs/424     | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >  tests/xfs/424.out |  1 +
> >  tests/xfs/group   |  1 +
> >  3 files changed, 79 insertions(+)
> >  create mode 100755 tests/xfs/424
> >  create mode 100644 tests/xfs/424.out
> > 
> > diff --git a/tests/xfs/424 b/tests/xfs/424
> > new file mode 100755
> > index 00000000..3b67cdf2
> > --- /dev/null
> > +++ b/tests/xfs/424
> > @@ -0,0 +1,77 @@
> > +#! /bin/bash
> > +# FS QA Test 424
> > +#
> > +# xfs_db should take type size into account when setting type.
> > +# If type size isn't updated whenever type is set, a false crc
> > +# error can occur due to the stale size. This test checks for
> > +# that false crc error.
> > +#
> > +#-----------------------------------------------------------------------
> > +# Copyright (c) 2017 Red Hat, Inc.  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 -f $tmp.*
> > +}
> > +
> > +_filter_dbval()
> > +{
> > +    awk '{ print $4 }'
> > +}
> > +
> > +# get standard environment, filters and checks
> > +. ./common/rc
> > +. ./common/filter
> > +
> > +# remove previous $seqres.full before test
> > +rm -f $seqres.full
> > +
> > +# Modify as appropriate
> > +_supported_os Linux
> 
> _supported_fs xfs
> 
> > +_require_scratch
> > +
> > +# real QA test starts here
> > +_scratch_unmount >> $seqres.full 2>&1
> > +
> > +# for different sector sizes, ensure no CRC errors are falsely reported
> > +
> > +# Supported types include: agf, agfl, agi, attr3, bmapbta,
> > +# bmapbtd, bnobt, cntbt, data, dir3, dqblk, inobt, inodata,
> > +# inode, log, rtbitmap, rtsummary, sb, symlink, text, finobt.
> 
> This leaves me wondering why we don't test most of the above ;)
> 
> > +# For various sector sizes, test some types that involve type size.
> > +for SECTOR_SIZE in 512 1024 2048 4096; do
> > +    $MKFS_XFS_PROG -f -s size=$SECTOR_SIZE $SCRATCH_DEV > /dev/null
> > +    for TYPE in agf agi agfl sb; do
> > +	DADDR=`$XFS_DB_PROG -c "$TYPE" -c "daddr" $SCRATCH_DEV | _filter_dbval`
> > +	$XFS_DB_PROG -c "$TYPE" -c "daddr 42" -c "daddr $DADDR" -c "type $TYPE" $SCRATCH_DEV
> 
> Hm is there a reason for the first "-c $TYPE" or even the "daddr 42" in the line just above?
It's drawn from the reproducer test case.
The first "-c $TYPE" sets the object, "daddr 42" is an arbitrary address set. Without
the daddr change and change-back, the test will pass even without the recent xfs_db
xfsprogs change.

> 
> Interesting, I didn't know that a bare "agf" works, but it does (and is documented
> as such).  fair enough.
> 
> It'd be very easy to add just a few more types to this, i.e.:  (leaving the extra
>  type & daddr setting in place for now)

ok. I'll add a few more.

> 
> DADDR=`$XFS_DB_PROG -c "sb" -c "addr rootino" -c "daddr" $SCRATCH_DEV | _filter_dbval`
> $XFS_DB_PROG -c "type inode" -c "daddr 42" -c "daddr $DADDR" -c "type inode" $SCRATCH_DEV
> 
> DADDR=`$XFS_DB_PROG -c "agf" -c "addr bnoroot" -c "daddr" $SCRATCH_DEV | _filter_dbval`
> $XFS_DB_PROG -c "type bnobt" -c "daddr 42" -c "daddr $DADDR" -c "type bnobt" $SCRATCH_DEV
> 
> DADDR=`$XFS_DB_PROG -c "agf" -c "addr cntroot" -c "daddr" $SCRATCH_DEV | _filter_dbval`
> $XFS_DB_PROG -c "type cntbt" -c "daddr 42" -c "daddr $DADDR" -c "type cntbt" $SCRATCH_DEV
> 
> DADDR=`$XFS_DB_PROG -c "agi" -c "addr root" -c "daddr" $SCRATCH_DEV | _filter_dbval`
> $XFS_DB_PROG -c "type inobt" -c "daddr 42" -c "daddr $DADDR" -c "type inobt" $SCRATCH_DEV
> 
> DADDR=`$XFS_DB_PROG -c "agi" -c "addr free_root" -c "daddr" $SCRATCH_DEV | _filter_dbval`
> $XFS_DB_PROG -c "type finobt" -c "daddr 42" -c "daddr $DADDR" -c "type finobt" $SCRATCH_DEV
> 
> others such as attr, dir, symlink would require more filesystem preparation I guess.
> 
> Thanks,
> -Eric
> 
> > +    done
> > +done
> > +
> > +# success, all done
> > +status=0
> > +exit
> > diff --git a/tests/xfs/424.out b/tests/xfs/424.out
> > new file mode 100644
> > index 00000000..d879a949
> > --- /dev/null
> > +++ b/tests/xfs/424.out
> > @@ -0,0 +1 @@
> > +QA output created by 424
> > diff --git a/tests/xfs/group b/tests/xfs/group
> > index ffdb0615..75c8280c 100644
> > --- a/tests/xfs/group
> > +++ b/tests/xfs/group
> > @@ -421,3 +421,4 @@
> >  421 auto quick clone dedupe
> >  422 dangerous_scrub dangerous_online_repair
> >  423 dangerous_scrub
> > +424 auto quick db
> >