xfstests: btrfs/080 add test case for qgroup account on shared extents
diff mbox

Message ID 1418723004-30543-1-git-send-email-bo.li.liu@oracle.com
State Not Applicable
Headers show

Commit Message

Liu Bo Dec. 16, 2014, 9:43 a.m. UTC
This is a regression test of
'commit fcebe4562dec ("Btrfs: rework qgroup accounting")'

It can produce qgroup related warnings.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
---
 tests/btrfs/080     | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/080.out |  3 +++
 2 files changed, 76 insertions(+)
 create mode 100755 tests/btrfs/080
 create mode 100644 tests/btrfs/080.out

Comments

Eryu Guan Dec. 16, 2014, 12:10 p.m. UTC | #1
On Tue, Dec 16, 2014 at 05:43:24PM +0800, Liu Bo wrote:
> This is a regression test of
> 'commit fcebe4562dec ("Btrfs: rework qgroup accounting")'
> 
> It can produce qgroup related warnings.
> 
> Signed-off-by: Liu Bo <bo.li.liu@oracle.com>

I have trouble applying the patch, can you please take a look?

patch: **** malformed patch at line 83: diff --git a/tests/btrfs/080.out b/tests/btrfs/080.out

And for new test case, "btrfs: add test case for qgroup ..." is good
enough, the seq number may be changed in future.

Some comments inline by looking at the patch.

> ---
>  tests/btrfs/080     | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++
>  tests/btrfs/080.out |  3 +++
>  2 files changed, 76 insertions(+)
>  create mode 100755 tests/btrfs/080
>  create mode 100644 tests/btrfs/080.out

You need to add test description to tests/btrfs/group too. And you can
use the first unused seq number, I think it's 017 now.

> 
> diff --git a/tests/btrfs/080 b/tests/btrfs/080
> new file mode 100755
> index 0000000..2a12bf2
> --- /dev/null
> +++ b/tests/btrfs/080
> @@ -0,0 +1,73 @@
> +#! /bin/bash
> +# FS QA Test No. 080
> +#
> +# Regression of 'commit fcebe4562dec ("Btrfs: rework qgroup accounting")'
> +# this will throw a warning into dmesg.
> +#
> +#-----------------------------------------------------------------------
> +# Copyright (c) 2014 Liu Bo.  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.
> +#-----------------------------------------------------------------------
> +#
> +
> +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.*
> +}
> +
> +# get standard environment, filters and checks
> +. ./common/rc
> +. ./common/filter
> +
> +# real QA test starts here
> +
> +_need_to_be_root
> +_supported_fs btrfs
> +_supported_os Linux
> +_require_scratch
> +
> +run_check _scratch_mkfs "-b 1g --nodesize 4096"
> +run_check _scratch_mount

I'm not sure if we need run_check here, I'll look at it again when I
can run the test.

> +
> +run_check xfs_io -f -d -c "pwrite 0 8K" $SCRATCH_MNT/foo

Use $XFS_IO_PROG here, which adds "-F" option if fs is not xfs.

> +
> +_run_btrfs_util_prog subvolume snapshot $SCRATCH_MNT $SCRATCH_MNT/snap
> +
> +run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/foo-reflink
> +run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/snap/foo-reflink
> +run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/snap/foo-reflink2

Need _require_cp_reflink first.

> +
> +_run_btrfs_util_prog quota enable $SCRATCH_MNT
> +_run_btrfs_util_prog quota rescan -w $SCRATCH_MNT
> +
> +rm -fr $SCRATCH_MNT/* >& /dev/null

I prefer "rm -fr $SCRATCH_MNT/* >/dev/null 2>&1"

But we use /bin/bash for all fstests tests, >& can work too..

> +
> +_run_btrfs_util_prog filesystem sync $SCRATCH_MNT
> +
> +$BTRFS_UTIL_PROG qgroup show $SCRATCH_MNT | $SED_PROG -n '/[0-9]/p' | $AWK_PROG '{print $2" "$3}'

Will dmesg log be checked? As the test will trigger warnings in dmesg, I
assume that's how the test determine pass/fail.

Thanks,
Eryu
> +
> +# success, all done
> +status=0
> +exit
> diff --git a/tests/btrfs/080.out b/tests/btrfs/080.out
> new file mode 100644
> index 0000000..eafa7c3
> --- /dev/null
> +++ b/tests/btrfs/080.out
> @@ -0,0 +1,3 @@
> +QA output created by 080
> +4096 4096
> +4096 4096
> -- 
> 1.8.2.1
> 
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Satoru Takeuchi Dec. 17, 2014, 3:12 a.m. UTC | #2
Hi Liu,

(2014/12/16 21:10), Eryu Guan wrote:
> On Tue, Dec 16, 2014 at 05:43:24PM +0800, Liu Bo wrote:
>> This is a regression test of
>> 'commit fcebe4562dec ("Btrfs: rework qgroup accounting")'
>>
>> It can produce qgroup related warnings.
>>
>> Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
>
> I have trouble applying the patch, can you please take a look?
>
> patch: **** malformed patch at line 83: diff --git a/tests/btrfs/080.out b/tests/btrfs/080.out

In addition, although you mark this test as tests/btrfs/080,
this name is already used by other test which Filipe added
at commit 0cfb617c51ae, yesterday.

Just FYI, tests/btrfs/081 is also exists in the newest xfstests...

Thanks,
Satoru

>
> And for new test case, "btrfs: add test case for qgroup ..." is good
> enough, the seq number may be changed in future.
>
> Some comments inline by looking at the patch.
>
>> ---
>>   tests/btrfs/080     | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++
>>   tests/btrfs/080.out |  3 +++
>>   2 files changed, 76 insertions(+)
>>   create mode 100755 tests/btrfs/080
>>   create mode 100644 tests/btrfs/080.out
>
> You need to add test description to tests/btrfs/group too. And you can
> use the first unused seq number, I think it's 017 now.
>
>>
>> diff --git a/tests/btrfs/080 b/tests/btrfs/080
>> new file mode 100755
>> index 0000000..2a12bf2
>> --- /dev/null
>> +++ b/tests/btrfs/080
>> @@ -0,0 +1,73 @@
>> +#! /bin/bash
>> +# FS QA Test No. 080
>> +#
>> +# Regression of 'commit fcebe4562dec ("Btrfs: rework qgroup accounting")'
>> +# this will throw a warning into dmesg.
>> +#
>> +#-----------------------------------------------------------------------
>> +# Copyright (c) 2014 Liu Bo.  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.
>> +#-----------------------------------------------------------------------
>> +#
>> +
>> +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.*
>> +}
>> +
>> +# get standard environment, filters and checks
>> +. ./common/rc
>> +. ./common/filter
>> +
>> +# real QA test starts here
>> +
>> +_need_to_be_root
>> +_supported_fs btrfs
>> +_supported_os Linux
>> +_require_scratch
>> +
>> +run_check _scratch_mkfs "-b 1g --nodesize 4096"
>> +run_check _scratch_mount
>
> I'm not sure if we need run_check here, I'll look at it again when I
> can run the test.
>
>> +
>> +run_check xfs_io -f -d -c "pwrite 0 8K" $SCRATCH_MNT/foo
>
> Use $XFS_IO_PROG here, which adds "-F" option if fs is not xfs.
>
>> +
>> +_run_btrfs_util_prog subvolume snapshot $SCRATCH_MNT $SCRATCH_MNT/snap
>> +
>> +run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/foo-reflink
>> +run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/snap/foo-reflink
>> +run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/snap/foo-reflink2
>
> Need _require_cp_reflink first.
>
>> +
>> +_run_btrfs_util_prog quota enable $SCRATCH_MNT
>> +_run_btrfs_util_prog quota rescan -w $SCRATCH_MNT
>> +
>> +rm -fr $SCRATCH_MNT/* >& /dev/null
>
> I prefer "rm -fr $SCRATCH_MNT/* >/dev/null 2>&1"
>
> But we use /bin/bash for all fstests tests, >& can work too..
>
>> +
>> +_run_btrfs_util_prog filesystem sync $SCRATCH_MNT
>> +
>> +$BTRFS_UTIL_PROG qgroup show $SCRATCH_MNT | $SED_PROG -n '/[0-9]/p' | $AWK_PROG '{print $2" "$3}'
>
> Will dmesg log be checked? As the test will trigger warnings in dmesg, I
> assume that's how the test determine pass/fail.
>
> Thanks,
> Eryu
>> +
>> +# success, all done
>> +status=0
>> +exit
>> diff --git a/tests/btrfs/080.out b/tests/btrfs/080.out
>> new file mode 100644
>> index 0000000..eafa7c3
>> --- /dev/null
>> +++ b/tests/btrfs/080.out
>> @@ -0,0 +1,3 @@
>> +QA output created by 080
>> +4096 4096
>> +4096 4096
>> --
>> 1.8.2.1
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe fstests" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> --
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Liu Bo Dec. 17, 2014, 3:36 a.m. UTC | #3
Hi Guan,

On Tue, Dec 16, 2014 at 08:10:43PM +0800, Eryu Guan wrote:
> On Tue, Dec 16, 2014 at 05:43:24PM +0800, Liu Bo wrote:
> > This is a regression test of
> > 'commit fcebe4562dec ("Btrfs: rework qgroup accounting")'
> > 
> > It can produce qgroup related warnings.
> > 
> > Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
> 
> I have trouble applying the patch, can you please take a look?
> 
> patch: **** malformed patch at line 83: diff --git a/tests/btrfs/080.out b/tests/btrfs/080.out

Sorry for the trouble, I've rebased this onto the latest xfstests,
please try again.

> 
> And for new test case, "btrfs: add test case for qgroup ..." is good
> enough, the seq number may be changed in future.

That's right.

> 
> Some comments inline by looking at the patch.
> 
> > ---
> >  tests/btrfs/080     | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++
> >  tests/btrfs/080.out |  3 +++
> >  2 files changed, 76 insertions(+)
> >  create mode 100755 tests/btrfs/080
> >  create mode 100644 tests/btrfs/080.out
> 
> You need to add test description to tests/btrfs/group too. And you can
> use the first unused seq number, I think it's 017 now.
> 
> > 
> > diff --git a/tests/btrfs/080 b/tests/btrfs/080
> > new file mode 100755
> > index 0000000..2a12bf2
> > --- /dev/null
> > +++ b/tests/btrfs/080
> > @@ -0,0 +1,73 @@
> > +#! /bin/bash
> > +# FS QA Test No. 080
> > +#
> > +# Regression of 'commit fcebe4562dec ("Btrfs: rework qgroup accounting")'
> > +# this will throw a warning into dmesg.
> > +#
> > +#-----------------------------------------------------------------------
> > +# Copyright (c) 2014 Liu Bo.  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.
> > +#-----------------------------------------------------------------------
> > +#
> > +
> > +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.*
> > +}
> > +
> > +# get standard environment, filters and checks
> > +. ./common/rc
> > +. ./common/filter
> > +
> > +# real QA test starts here
> > +
> > +_need_to_be_root
> > +_supported_fs btrfs
> > +_supported_os Linux
> > +_require_scratch
> > +
> > +run_check _scratch_mkfs "-b 1g --nodesize 4096"
> > +run_check _scratch_mount
> 
> I'm not sure if we need run_check here, I'll look at it again when I
> can run the test.
> 
> > +
> > +run_check xfs_io -f -d -c "pwrite 0 8K" $SCRATCH_MNT/foo
> 
> Use $XFS_IO_PROG here, which adds "-F" option if fs is not xfs.
> 
> > +
> > +_run_btrfs_util_prog subvolume snapshot $SCRATCH_MNT $SCRATCH_MNT/snap
> > +
> > +run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/foo-reflink
> > +run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/snap/foo-reflink
> > +run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/snap/foo-reflink2
> 
> Need _require_cp_reflink first.

I'm going to use cloner instead as all I want is to create shared extents.

> 
> > +
> > +_run_btrfs_util_prog quota enable $SCRATCH_MNT
> > +_run_btrfs_util_prog quota rescan -w $SCRATCH_MNT
> > +
> > +rm -fr $SCRATCH_MNT/* >& /dev/null
> 
> I prefer "rm -fr $SCRATCH_MNT/* >/dev/null 2>&1"
> 
> But we use /bin/bash for all fstests tests, >& can work too..
> 
> > +
> > +_run_btrfs_util_prog filesystem sync $SCRATCH_MNT
> > +
> > +$BTRFS_UTIL_PROG qgroup show $SCRATCH_MNT | $SED_PROG -n '/[0-9]/p' | $AWK_PROG '{print $2" "$3}'
> 
> Will dmesg log be checked? As the test will trigger warnings in dmesg, I
> assume that's how the test determine pass/fail.

Well, the 'xx.out' has the expected qgroup number, which can help us
determine "pass/fail".

Thanks for the comments.

Thanks,

-liubo
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Liu Bo Dec. 17, 2014, 3:38 a.m. UTC | #4
Hi Satoru san,

On Wed, Dec 17, 2014 at 12:12:05PM +0900, Satoru Takeuchi wrote:
> Hi Liu,
> 
> (2014/12/16 21:10), Eryu Guan wrote:
> >On Tue, Dec 16, 2014 at 05:43:24PM +0800, Liu Bo wrote:
> >>This is a regression test of
> >>'commit fcebe4562dec ("Btrfs: rework qgroup accounting")'
> >>
> >>It can produce qgroup related warnings.
> >>
> >>Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
> >
> >I have trouble applying the patch, can you please take a look?
> >
> >patch: **** malformed patch at line 83: diff --git a/tests/btrfs/080.out b/tests/btrfs/080.out
> 
> In addition, although you mark this test as tests/btrfs/080,
> this name is already used by other test which Filipe added
> at commit 0cfb617c51ae, yesterday.
> 
> Just FYI, tests/btrfs/081 is also exists in the newest xfstests...

Yeah, that's right, I've rebased onto the lastest xfstests, and the script "new" finds that btrfs/017 is the right one.

Thanks,

-liubo

> 
> Thanks,
> Satoru
> 
> >
> >And for new test case, "btrfs: add test case for qgroup ..." is good
> >enough, the seq number may be changed in future.
> >
> >Some comments inline by looking at the patch.
> >
> >>---
> >>  tests/btrfs/080     | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++
> >>  tests/btrfs/080.out |  3 +++
> >>  2 files changed, 76 insertions(+)
> >>  create mode 100755 tests/btrfs/080
> >>  create mode 100644 tests/btrfs/080.out
> >
> >You need to add test description to tests/btrfs/group too. And you can
> >use the first unused seq number, I think it's 017 now.
> >
> >>
> >>diff --git a/tests/btrfs/080 b/tests/btrfs/080
> >>new file mode 100755
> >>index 0000000..2a12bf2
> >>--- /dev/null
> >>+++ b/tests/btrfs/080
> >>@@ -0,0 +1,73 @@
> >>+#! /bin/bash
> >>+# FS QA Test No. 080
> >>+#
> >>+# Regression of 'commit fcebe4562dec ("Btrfs: rework qgroup accounting")'
> >>+# this will throw a warning into dmesg.
> >>+#
> >>+#-----------------------------------------------------------------------
> >>+# Copyright (c) 2014 Liu Bo.  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.
> >>+#-----------------------------------------------------------------------
> >>+#
> >>+
> >>+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.*
> >>+}
> >>+
> >>+# get standard environment, filters and checks
> >>+. ./common/rc
> >>+. ./common/filter
> >>+
> >>+# real QA test starts here
> >>+
> >>+_need_to_be_root
> >>+_supported_fs btrfs
> >>+_supported_os Linux
> >>+_require_scratch
> >>+
> >>+run_check _scratch_mkfs "-b 1g --nodesize 4096"
> >>+run_check _scratch_mount
> >
> >I'm not sure if we need run_check here, I'll look at it again when I
> >can run the test.
> >
> >>+
> >>+run_check xfs_io -f -d -c "pwrite 0 8K" $SCRATCH_MNT/foo
> >
> >Use $XFS_IO_PROG here, which adds "-F" option if fs is not xfs.
> >
> >>+
> >>+_run_btrfs_util_prog subvolume snapshot $SCRATCH_MNT $SCRATCH_MNT/snap
> >>+
> >>+run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/foo-reflink
> >>+run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/snap/foo-reflink
> >>+run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/snap/foo-reflink2
> >
> >Need _require_cp_reflink first.
> >
> >>+
> >>+_run_btrfs_util_prog quota enable $SCRATCH_MNT
> >>+_run_btrfs_util_prog quota rescan -w $SCRATCH_MNT
> >>+
> >>+rm -fr $SCRATCH_MNT/* >& /dev/null
> >
> >I prefer "rm -fr $SCRATCH_MNT/* >/dev/null 2>&1"
> >
> >But we use /bin/bash for all fstests tests, >& can work too..
> >
> >>+
> >>+_run_btrfs_util_prog filesystem sync $SCRATCH_MNT
> >>+
> >>+$BTRFS_UTIL_PROG qgroup show $SCRATCH_MNT | $SED_PROG -n '/[0-9]/p' | $AWK_PROG '{print $2" "$3}'
> >
> >Will dmesg log be checked? As the test will trigger warnings in dmesg, I
> >assume that's how the test determine pass/fail.
> >
> >Thanks,
> >Eryu
> >>+
> >>+# success, all done
> >>+status=0
> >>+exit
> >>diff --git a/tests/btrfs/080.out b/tests/btrfs/080.out
> >>new file mode 100644
> >>index 0000000..eafa7c3
> >>--- /dev/null
> >>+++ b/tests/btrfs/080.out
> >>@@ -0,0 +1,3 @@
> >>+QA output created by 080
> >>+4096 4096
> >>+4096 4096
> >>--
> >>1.8.2.1
> >>
> >>--
> >>To unsubscribe from this list: send the line "unsubscribe fstests" in
> >>the body of a message to majordomo@vger.kernel.org
> >>More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >--
> >To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
> >the body of a message to majordomo@vger.kernel.org
> >More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> 
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Patch
diff mbox

diff --git a/tests/btrfs/080 b/tests/btrfs/080
new file mode 100755
index 0000000..2a12bf2
--- /dev/null
+++ b/tests/btrfs/080
@@ -0,0 +1,73 @@ 
+#! /bin/bash
+# FS QA Test No. 080
+#
+# Regression of 'commit fcebe4562dec ("Btrfs: rework qgroup accounting")'
+# this will throw a warning into dmesg.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2014 Liu Bo.  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.
+#-----------------------------------------------------------------------
+#
+
+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.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+
+_need_to_be_root
+_supported_fs btrfs
+_supported_os Linux
+_require_scratch
+
+run_check _scratch_mkfs "-b 1g --nodesize 4096"
+run_check _scratch_mount
+
+run_check xfs_io -f -d -c "pwrite 0 8K" $SCRATCH_MNT/foo
+
+_run_btrfs_util_prog subvolume snapshot $SCRATCH_MNT $SCRATCH_MNT/snap
+
+run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/foo-reflink
+run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/snap/foo-reflink
+run_check cp --reflink $SCRATCH_MNT/foo $SCRATCH_MNT/snap/foo-reflink2
+
+_run_btrfs_util_prog quota enable $SCRATCH_MNT
+_run_btrfs_util_prog quota rescan -w $SCRATCH_MNT
+
+rm -fr $SCRATCH_MNT/* >& /dev/null
+
+_run_btrfs_util_prog filesystem sync $SCRATCH_MNT
+
+$BTRFS_UTIL_PROG qgroup show $SCRATCH_MNT | $SED_PROG -n '/[0-9]/p' | $AWK_PROG '{print $2" "$3}'
+
+# success, all done
+status=0
+exit
diff --git a/tests/btrfs/080.out b/tests/btrfs/080.out
new file mode 100644
index 0000000..eafa7c3
--- /dev/null
+++ b/tests/btrfs/080.out
@@ -0,0 +1,3 @@ 
+QA output created by 080
+4096 4096
+4096 4096