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Date:   Wed, 12 Jun 2019 15:32:13 +0800
From:   Zorro Lang <zlang@redhat.com>
To:     fstests@vger.kernel.org
Cc:     linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
        Andreas Dilger <adilger@dilger.ca>
Subject: Re: [PATCH] generic: test statfs on project quota directory
Message-ID: <20190612073213.GA30864@dhcp-12-102.nay.redhat.com>
References: <20190513014951.4357-1-zlang@redhat.com>
 <01F47CA1-E737-4F52-8FF2-A3E0DCD8EB1B@dilger.ca>
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On Tue, May 14, 2019 at 09:28:38AM -0600, Andreas Dilger wrote:
> On May 12, 2019, at 7:49 PM, Zorro Lang <zlang@redhat.com> wrote:
> > 
> > There's a bug on xfs cause statfs get negative f_ffree value from
> > a project quota directory. It's fixed by "de7243057 fs/xfs: fix
> > f_ffree value for statfs when project quota is set". So add statfs
> > testing on project quota block and inode count limit.
> > 
> > For testing foreign fs quota, change _qmount() function, turn on
> > project if quotaon support.
> > 
> > Signed-off-by: Zorro Lang <zlang@redhat.com>
> > ---
> > 
> > Hi,
> > 
> > (Long time passed, re-send this patch again to get reviewing)
> > 
> > There's one thing I don't understand, so CC ext4 mail list. Please
> > feel free to reply, if anyone knows that:
> > 
> > $ mkfs.ext4 $SCRATCH_DEV
> > $ tune2fs -O quota,project $SCRATCH_DEV
> > $ mount $SCRATCH_DEV $SCRATCH_MNT -o prjquota
> > $ quotaon -P $SCRATCH_MNT
> > $ mkdir $SCRATCH_MNT/t
> > $ xfs_quota -f -x -c "project -p $SCRATCH_MNT/t -s 42" $SCRATCH_MNT
> > $ xfs_quota -f -x -c "limit -p bsoft=100m answer" $SCRATCH_MNT
> > $ df -k $SCRATCH_MNT/t
> > Filesystem    1K-blocks  Used Available Use% Mounted on
> > SCRATCH_DEV    102400     4    102396   1% SCRATCH_MNT
> > 
> > On XFS, the 'Used' field always shows '0'. But why ext4 always has
> > more 4k? Is it a bug or expected.
> 
> Each directory in ext4 consumes a 4KB block, so setting the project
> quota on a directory always consumes at least one block.

Ping fstests@vger.kernel.org.

One month passed. Is there anything else block this patch merge?

Thanks,
Zorro

> 
> Cheers, Andreas
> 
> > common/quota          |  4 +++
> > tests/generic/999     | 74 +++++++++++++++++++++++++++++++++++++++++++
> > tests/generic/999.out |  3 ++
> > tests/generic/group   |  1 +
> > 4 files changed, 82 insertions(+)
> > create mode 100755 tests/generic/999
> > create mode 100644 tests/generic/999.out
> > 
> > diff --git a/common/quota b/common/quota
> > index f19f81a1..315df8cb 100644
> > --- a/common/quota
> > +++ b/common/quota
> > @@ -200,6 +200,10 @@ _qmount()
> >    if [ "$FSTYP" != "xfs" ]; then
> >        quotacheck -ug $SCRATCH_MNT >>$seqres.full 2>&1
> >        quotaon -ug $SCRATCH_MNT >>$seqres.full 2>&1
> > +	# try to turn on project quota if it's supported
> > +	if quotaon --help 2>&1 | grep -q '\-\-project'; then
> > +		quotaon --project $SCRATCH_MNT >>$seqres.full 2>&1
> > +	fi
> >    fi
> >    chmod ugo+rwx $SCRATCH_MNT
> > }
> > diff --git a/tests/generic/999 b/tests/generic/999
> > new file mode 100755
> > index 00000000..555341f1
> > --- /dev/null
> > +++ b/tests/generic/999
> > @@ -0,0 +1,74 @@
> > +#! /bin/bash
> > +# SPDX-License-Identifier: GPL-2.0
> > +# Copyright (c) 2019 Red Hat, Inc.  All Rights Reserved.
> > +#
> > +# FS QA Test No. 999
> > +#
> > +# Test statfs when project quota is set.
> > +# Uncover de7243057 fs/xfs: fix f_ffree value for statfs when project quota is set
> > +#
> > +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 /
> > +	_scratch_unmount
> > +	rm -f $tmp.*
> > +}
> > +
> > +# get standard environment, filters and checks
> > +. ./common/rc
> > +. ./common/filter
> > +. ./common/quota
> > +
> > +# remove previous $seqres.full before test
> > +rm -f $seqres.full
> > +
> > +# real QA test starts here
> > +_supported_fs generic
> > +_supported_os Linux
> > +_require_scratch
> > +_require_quota
> > +_require_xfs_quota_foreign
> > +
> > +_scratch_mkfs >/dev/null 2>&1
> > +_scratch_enable_pquota
> > +_qmount_option "prjquota"
> > +_qmount
> > +_require_prjquota $SCRATCH_DEV
> > +
> > +# Create a directory to be project object, and create a file to take 64k space
> > +mkdir $SCRATCH_MNT/t
> > +$XFS_IO_PROG -f -c "pwrite 0 65536" -c sync $SCRATCH_MNT/t/file >>$seqres.full
> > +
> > +# Setup temporary replacements for /etc/projects and /etc/projid
> > +cat >$tmp.projects <<EOF
> > +42:$SCRATCH_MNT/t
> > +EOF
> > +
> > +cat >$tmp.projid <<EOF
> > +answer:42
> > +EOF
> > +
> > +quota_cmd="$XFS_QUOTA_PROG -D $tmp.projects -P $tmp.projid"
> > +$quota_cmd -x -c 'project -s answer' $SCRATCH_MNT >/dev/null 2>&1
> > +$quota_cmd -x -c 'limit -p isoft=53 bsoft=100m answer' $SCRATCH_MNT
> > +
> > +# The itotal and size should be 53 and 102400(k), as above project quota limit.
> > +# The isued and used should be 2 and 64(k), as this case takes. But ext4 always
> > +# shows more 4k 'used' space than XFS, it prints 68k at here. So filter the
> > +# 6[48] at the end.
> > +df -k --output=file,itotal,iused,size,used $SCRATCH_MNT/t | \
> > +	_filter_scratch | _filter_spaces | \
> > +	sed -e "/SCRATCH_MNT/s/6[48]/N/"
> > +
> > +# success, all done
> > +status=0
> > +exit
> > diff --git a/tests/generic/999.out b/tests/generic/999.out
> > new file mode 100644
> > index 00000000..1bebabd4
> > --- /dev/null
> > +++ b/tests/generic/999.out
> > @@ -0,0 +1,3 @@
> > +QA output created by 999
> > +File Inodes IUsed 1K-blocks Used
> > +SCRATCH_MNT/t 53 2 102400 N
> > diff --git a/tests/generic/group b/tests/generic/group
> > index 9f4845c6..35da10a5 100644
> > --- a/tests/generic/group
> > +++ b/tests/generic/group
> > @@ -542,3 +542,4 @@
> > 537 auto quick trim
> > 538 auto quick aio
> > 539 auto quick punch seek
> > +999 auto quick quota
> > --
> > 2.17.2
> > 
> 
> 
> Cheers, Andreas
> 
> 
> 
> 
> 
> 
> 
> 
> Cheers, Andreas
> 
> 
> 
> 
>