[v4,3/3] xfs: initial fiemap range query test
diff mbox

Message ID 1510747900-13440-3-git-send-email-nborisov@suse.com
State New
Headers show

Commit Message

Nikolay Borisov Nov. 15, 2017, 12:11 p.m. UTC
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
---

V4: 
 * Added test description
 * Added new test for past-eof behavior
 * Removed supported_generic_fs line
 * Switched to using the "ranged" param require
 * Revert v3 changes

V3:
 * Adjusted tests for '-r' fiemap param
 * Tests for invalid -r combination

V2: No change
V1: No change

 tests/xfs/900     |  92 +++++++++++++++++++++++++++++++++++++++++
 tests/xfs/900.out | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 211 insertions(+)
 create mode 100755 tests/xfs/900
 create mode 100644 tests/xfs/900.out

Comments

Eryu Guan Nov. 21, 2017, 5:45 a.m. UTC | #1
On Wed, Nov 15, 2017 at 02:11:40PM +0200, Nikolay Borisov wrote:
> Signed-off-by: Nikolay Borisov <nborisov@suse.com>

Please add test description to commit log too.

> ---
> 
> V4: 
>  * Added test description
>  * Added new test for past-eof behavior
>  * Removed supported_generic_fs line
>  * Switched to using the "ranged" param require
>  * Revert v3 changes
> 
> V3:
>  * Adjusted tests for '-r' fiemap param
>  * Tests for invalid -r combination
> 
> V2: No change
> V1: No change
> 
>  tests/xfs/900     |  92 +++++++++++++++++++++++++++++++++++++++++
>  tests/xfs/900.out | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 211 insertions(+)
>  create mode 100755 tests/xfs/900
>  create mode 100644 tests/xfs/900.out
> 
> diff --git a/tests/xfs/900 b/tests/xfs/900
> new file mode 100755
> index 0000000..06a5c64
> --- /dev/null
> +++ b/tests/xfs/900
> @@ -0,0 +1,92 @@
> +#! /bin/bash
> +# FS QA Test No. 900

Add an empty line after the first line.

> +# Test for the new ranged query functionality in xfs_io's fiemap command.
> +# This tests various combinations of hole + data layout being printed.
> +# Also the test used 16k holes to be compatible with 16k block filesystems

Empty line here too.

> +#-----------------------------------------------------------------------
> +# Copyright (c) 2017 SUSE Linux Products GmbH. All Rights Reserved.
> +# Author: Nikolay Borisov <nborisov@suse.com>
> +#
> +#

Extra empty line here.

> +# 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.*
> +}
> +
> +# get standard environment, filters and checks
> +. ./common/rc
> +. ./common/punch
> +
> +# remove previous $seqres.full before test
> +rm -f $seqres.full
> +
> +# real QA test starts here
> +
> +# Modify as appropriate.
> +_supported_os Linux
> +_require_scratch
> +_require_xfs_io_command "falloc"
> +_require_xfs_io_command "fiemap" "ranged"

Better to add comments about the "ranged" too in the test.

> +
> +_scratch_mkfs > $seqres.full 2>&1
> +_scratch_mount || _fail "mount failure"
> +
> +file=$SCRATCH_MNT/testfile
> +$XFS_IO_PROG -f -c "falloc 0 1m" $file 

Trailing whitespace in above line.

> +for i in {0..31}; do $XFS_IO_PROG -c "fpunch $(($i*32))k 16k" $file; done
> +
> +# Query 1 data extent between 16k..16k range
> +echo "Basic data extent"
> +$XFS_IO_PROG -c "fiemap -v 16k 16k" $file | _filter_fiemap 

Trailing whitespace in above line.

> +
> +# Query data and hole extent
> +echo "Data + Hole"
> +$XFS_IO_PROG -c "fiemap -v 16k 20k" $file | _filter_fiemap
> +
> +echo "Hole + Data + Hole"
> +$XFS_IO_PROG -c "fiemap -v 32k 40k" $file | _filter_fiemap

Test "Only hole", "Hole + Data" and "Data + Hole + Data" too? As well as
some tests to exercise range boundaries are not aligned with extent
boundaries?

> +
> +echo "Beginning with a hole"
> +$XFS_IO_PROG -c "fiemap -v 0 3k" $file | _filter_fiemap
> +
> +# Query for 0..160k that's 40 extents, more than the EXTENT_BATCH
> +echo "Query more than 32 extents"
> +$XFS_IO_PROG -c "fiemap -v 0 640k" $file | _filter_fiemap
> +
> +echo "Larger query than file size"
> +$XFS_IO_PROG -c "fiemap -v 0 2m" $file | _filter_fiemap
> +
> +#mapping past eof shouldn't print anything"

Add a space after "#" for comments.

> +$XFS_IO_PROG -c "fiemap -v 2m" $file | _filter_fiemap
> +
> +#check everything without the first hole

Same here.

Thanks,
Eryu

> +$XFS_IO_PROG -c "fiemap -v 16k" $file | wc -l
> +
> +# success, all done
> +status=0
> +exit
> diff --git a/tests/xfs/900.out b/tests/xfs/900.out
> new file mode 100644
> index 0000000..6ecf1b6
> --- /dev/null
> +++ b/tests/xfs/900.out
> @@ -0,0 +1,119 @@
> +QA output created by 900
> +Basic data extent
> +0: [32..63]: unwritten
> +Data + Hole
> +0: [32..63]: unwritten
> +1: [64..95]: hole
> +Hole + Data + Hole
> +0: [64..95]: hole
> +1: [96..127]: unwritten
> +2: [128..159]: hole
> +Beginning with a hole
> +0: [0..31]: hole
> +Query more than 32 extents
> +0: [0..31]: hole
> +1: [32..63]: unwritten
> +2: [64..95]: hole
> +3: [96..127]: unwritten
> +4: [128..159]: hole
> +5: [160..191]: unwritten
> +6: [192..223]: hole
> +7: [224..255]: unwritten
> +8: [256..287]: hole
> +9: [288..319]: unwritten
> +10: [320..351]: hole
> +11: [352..383]: unwritten
> +12: [384..415]: hole
> +13: [416..447]: unwritten
> +14: [448..479]: hole
> +15: [480..511]: unwritten
> +16: [512..543]: hole
> +17: [544..575]: unwritten
> +18: [576..607]: hole
> +19: [608..639]: unwritten
> +20: [640..671]: hole
> +21: [672..703]: unwritten
> +22: [704..735]: hole
> +23: [736..767]: unwritten
> +24: [768..799]: hole
> +25: [800..831]: unwritten
> +26: [832..863]: hole
> +27: [864..895]: unwritten
> +28: [896..927]: hole
> +29: [928..959]: unwritten
> +30: [960..991]: hole
> +31: [992..1023]: unwritten
> +32: [1024..1055]: hole
> +33: [1056..1087]: unwritten
> +34: [1088..1119]: hole
> +35: [1120..1151]: unwritten
> +36: [1152..1183]: hole
> +37: [1184..1215]: unwritten
> +38: [1216..1247]: hole
> +39: [1248..1279]: unwritten
> +Larger query than file size
> +0: [0..31]: hole
> +1: [32..63]: unwritten
> +2: [64..95]: hole
> +3: [96..127]: unwritten
> +4: [128..159]: hole
> +5: [160..191]: unwritten
> +6: [192..223]: hole
> +7: [224..255]: unwritten
> +8: [256..287]: hole
> +9: [288..319]: unwritten
> +10: [320..351]: hole
> +11: [352..383]: unwritten
> +12: [384..415]: hole
> +13: [416..447]: unwritten
> +14: [448..479]: hole
> +15: [480..511]: unwritten
> +16: [512..543]: hole
> +17: [544..575]: unwritten
> +18: [576..607]: hole
> +19: [608..639]: unwritten
> +20: [640..671]: hole
> +21: [672..703]: unwritten
> +22: [704..735]: hole
> +23: [736..767]: unwritten
> +24: [768..799]: hole
> +25: [800..831]: unwritten
> +26: [832..863]: hole
> +27: [864..895]: unwritten
> +28: [896..927]: hole
> +29: [928..959]: unwritten
> +30: [960..991]: hole
> +31: [992..1023]: unwritten
> +32: [1024..1055]: hole
> +33: [1056..1087]: unwritten
> +34: [1088..1119]: hole
> +35: [1120..1151]: unwritten
> +36: [1152..1183]: hole
> +37: [1184..1215]: unwritten
> +38: [1216..1247]: hole
> +39: [1248..1279]: unwritten
> +40: [1280..1311]: hole
> +41: [1312..1343]: unwritten
> +42: [1344..1375]: hole
> +43: [1376..1407]: unwritten
> +44: [1408..1439]: hole
> +45: [1440..1471]: unwritten
> +46: [1472..1503]: hole
> +47: [1504..1535]: unwritten
> +48: [1536..1567]: hole
> +49: [1568..1599]: unwritten
> +50: [1600..1631]: hole
> +51: [1632..1663]: unwritten
> +52: [1664..1695]: hole
> +53: [1696..1727]: unwritten
> +54: [1728..1759]: hole
> +55: [1760..1791]: unwritten
> +56: [1792..1823]: hole
> +57: [1824..1855]: unwritten
> +58: [1856..1887]: hole
> +59: [1888..1919]: unwritten
> +60: [1920..1951]: hole
> +61: [1952..1983]: unwritten
> +62: [1984..2015]: hole
> +63: [2016..2047]: unwritten
> +65
> -- 
> 2.7.4
> 
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Nikolay Borisov Nov. 21, 2017, 3:10 p.m. UTC | #2
On 21.11.2017 07:45, Eryu Guan wrote:
> On Wed, Nov 15, 2017 at 02:11:40PM +0200, Nikolay Borisov wrote:
>> Signed-off-by: Nikolay Borisov <nborisov@suse.com>
> 
> Please add test description to commit log too.
> 
>> ---
>>
>> V4: 
>>  * Added test description
>>  * Added new test for past-eof behavior
>>  * Removed supported_generic_fs line
>>  * Switched to using the "ranged" param require
>>  * Revert v3 changes
>>
>> V3:
>>  * Adjusted tests for '-r' fiemap param
>>  * Tests for invalid -r combination
>>
>> V2: No change
>> V1: No change
>>
>>  tests/xfs/900     |  92 +++++++++++++++++++++++++++++++++++++++++
>>  tests/xfs/900.out | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>  2 files changed, 211 insertions(+)
>>  create mode 100755 tests/xfs/900
>>  create mode 100644 tests/xfs/900.out
>>
>> diff --git a/tests/xfs/900 b/tests/xfs/900
>> new file mode 100755
>> index 0000000..06a5c64
>> --- /dev/null
>> +++ b/tests/xfs/900
>> @@ -0,0 +1,92 @@
>> +#! /bin/bash
>> +# FS QA Test No. 900
> 
> Add an empty line after the first line.
> 
>> +# Test for the new ranged query functionality in xfs_io's fiemap command.
>> +# This tests various combinations of hole + data layout being printed.
>> +# Also the test used 16k holes to be compatible with 16k block filesystems
> 
> Empty line here too.
> 
>> +#-----------------------------------------------------------------------
>> +# Copyright (c) 2017 SUSE Linux Products GmbH. All Rights Reserved.
>> +# Author: Nikolay Borisov <nborisov@suse.com>
>> +#
>> +#
> 
> Extra empty line here.
> 
>> +# 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.*
>> +}
>> +
>> +# get standard environment, filters and checks
>> +. ./common/rc
>> +. ./common/punch
>> +
>> +# remove previous $seqres.full before test
>> +rm -f $seqres.full
>> +
>> +# real QA test starts here
>> +
>> +# Modify as appropriate.
>> +_supported_os Linux
>> +_require_scratch
>> +_require_xfs_io_command "falloc"
>> +_require_xfs_io_command "fiemap" "ranged"
> 
> Better to add comments about the "ranged" too in the test.
> 
>> +
>> +_scratch_mkfs > $seqres.full 2>&1
>> +_scratch_mount || _fail "mount failure"
>> +
>> +file=$SCRATCH_MNT/testfile
>> +$XFS_IO_PROG -f -c "falloc 0 1m" $file 
> 
> Trailing whitespace in above line.
> 
>> +for i in {0..31}; do $XFS_IO_PROG -c "fpunch $(($i*32))k 16k" $file; done
>> +
>> +# Query 1 data extent between 16k..16k range
>> +echo "Basic data extent"
>> +$XFS_IO_PROG -c "fiemap -v 16k 16k" $file | _filter_fiemap 
> 
> Trailing whitespace in above line.
> 
>> +
>> +# Query data and hole extent
>> +echo "Data + Hole"
>> +$XFS_IO_PROG -c "fiemap -v 16k 20k" $file | _filter_fiemap
>> +
>> +echo "Hole + Data + Hole"
>> +$XFS_IO_PROG -c "fiemap -v 32k 40k" $file | _filter_fiemap
> 
> Test "Only hole", "Hole + Data" and "Data + Hole + Data" too? As well as
> some tests to exercise range boundaries are not aligned with extent
> boundaries?

Only hole is covered by "Begining with a hole", I've added the next 2
suggestions. Also some tests already have boundaries which are not
aligned and the behavior there is pretty well defined by the kernel so
no point in adding specific tests for those.

> 
>> +
>> +echo "Beginning with a hole"
>> +$XFS_IO_PROG -c "fiemap -v 0 3k" $file | _filter_fiemap
>> +
>> +# Query for 0..160k that's 40 extents, more than the EXTENT_BATCH
>> +echo "Query more than 32 extents"
>> +$XFS_IO_PROG -c "fiemap -v 0 640k" $file | _filter_fiemap
>> +
>> +echo "Larger query than file size"
>> +$XFS_IO_PROG -c "fiemap -v 0 2m" $file | _filter_fiemap
>> +
>> +#mapping past eof shouldn't print anything"
> 
> Add a space after "#" for comments.
> 
>> +$XFS_IO_PROG -c "fiemap -v 2m" $file | _filter_fiemap
>> +
>> +#check everything without the first hole
> 
> Same here.
> 
> Thanks,
> Eryu
> 
>> +$XFS_IO_PROG -c "fiemap -v 16k" $file | wc -l
>> +
>> +# success, all done
>> +status=0
>> +exit
>> diff --git a/tests/xfs/900.out b/tests/xfs/900.out
>> new file mode 100644
>> index 0000000..6ecf1b6
>> --- /dev/null
>> +++ b/tests/xfs/900.out
>> @@ -0,0 +1,119 @@
>> +QA output created by 900
>> +Basic data extent
>> +0: [32..63]: unwritten
>> +Data + Hole
>> +0: [32..63]: unwritten
>> +1: [64..95]: hole
>> +Hole + Data + Hole
>> +0: [64..95]: hole
>> +1: [96..127]: unwritten
>> +2: [128..159]: hole
>> +Beginning with a hole
>> +0: [0..31]: hole
>> +Query more than 32 extents
>> +0: [0..31]: hole
>> +1: [32..63]: unwritten
>> +2: [64..95]: hole
>> +3: [96..127]: unwritten
>> +4: [128..159]: hole
>> +5: [160..191]: unwritten
>> +6: [192..223]: hole
>> +7: [224..255]: unwritten
>> +8: [256..287]: hole
>> +9: [288..319]: unwritten
>> +10: [320..351]: hole
>> +11: [352..383]: unwritten
>> +12: [384..415]: hole
>> +13: [416..447]: unwritten
>> +14: [448..479]: hole
>> +15: [480..511]: unwritten
>> +16: [512..543]: hole
>> +17: [544..575]: unwritten
>> +18: [576..607]: hole
>> +19: [608..639]: unwritten
>> +20: [640..671]: hole
>> +21: [672..703]: unwritten
>> +22: [704..735]: hole
>> +23: [736..767]: unwritten
>> +24: [768..799]: hole
>> +25: [800..831]: unwritten
>> +26: [832..863]: hole
>> +27: [864..895]: unwritten
>> +28: [896..927]: hole
>> +29: [928..959]: unwritten
>> +30: [960..991]: hole
>> +31: [992..1023]: unwritten
>> +32: [1024..1055]: hole
>> +33: [1056..1087]: unwritten
>> +34: [1088..1119]: hole
>> +35: [1120..1151]: unwritten
>> +36: [1152..1183]: hole
>> +37: [1184..1215]: unwritten
>> +38: [1216..1247]: hole
>> +39: [1248..1279]: unwritten
>> +Larger query than file size
>> +0: [0..31]: hole
>> +1: [32..63]: unwritten
>> +2: [64..95]: hole
>> +3: [96..127]: unwritten
>> +4: [128..159]: hole
>> +5: [160..191]: unwritten
>> +6: [192..223]: hole
>> +7: [224..255]: unwritten
>> +8: [256..287]: hole
>> +9: [288..319]: unwritten
>> +10: [320..351]: hole
>> +11: [352..383]: unwritten
>> +12: [384..415]: hole
>> +13: [416..447]: unwritten
>> +14: [448..479]: hole
>> +15: [480..511]: unwritten
>> +16: [512..543]: hole
>> +17: [544..575]: unwritten
>> +18: [576..607]: hole
>> +19: [608..639]: unwritten
>> +20: [640..671]: hole
>> +21: [672..703]: unwritten
>> +22: [704..735]: hole
>> +23: [736..767]: unwritten
>> +24: [768..799]: hole
>> +25: [800..831]: unwritten
>> +26: [832..863]: hole
>> +27: [864..895]: unwritten
>> +28: [896..927]: hole
>> +29: [928..959]: unwritten
>> +30: [960..991]: hole
>> +31: [992..1023]: unwritten
>> +32: [1024..1055]: hole
>> +33: [1056..1087]: unwritten
>> +34: [1088..1119]: hole
>> +35: [1120..1151]: unwritten
>> +36: [1152..1183]: hole
>> +37: [1184..1215]: unwritten
>> +38: [1216..1247]: hole
>> +39: [1248..1279]: unwritten
>> +40: [1280..1311]: hole
>> +41: [1312..1343]: unwritten
>> +42: [1344..1375]: hole
>> +43: [1376..1407]: unwritten
>> +44: [1408..1439]: hole
>> +45: [1440..1471]: unwritten
>> +46: [1472..1503]: hole
>> +47: [1504..1535]: unwritten
>> +48: [1536..1567]: hole
>> +49: [1568..1599]: unwritten
>> +50: [1600..1631]: hole
>> +51: [1632..1663]: unwritten
>> +52: [1664..1695]: hole
>> +53: [1696..1727]: unwritten
>> +54: [1728..1759]: hole
>> +55: [1760..1791]: unwritten
>> +56: [1792..1823]: hole
>> +57: [1824..1855]: unwritten
>> +58: [1856..1887]: hole
>> +59: [1888..1919]: unwritten
>> +60: [1920..1951]: hole
>> +61: [1952..1983]: unwritten
>> +62: [1984..2015]: hole
>> +63: [2016..2047]: unwritten
>> +65
>> -- 
>> 2.7.4
>>
> 
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To unsubscribe from this list: send the line "unsubscribe fstests" in
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Patch
diff mbox

diff --git a/tests/xfs/900 b/tests/xfs/900
new file mode 100755
index 0000000..06a5c64
--- /dev/null
+++ b/tests/xfs/900
@@ -0,0 +1,92 @@ 
+#! /bin/bash
+# FS QA Test No. 900
+# Test for the new ranged query functionality in xfs_io's fiemap command.
+# This tests various combinations of hole + data layout being printed.
+# Also the test used 16k holes to be compatible with 16k block filesystems
+#-----------------------------------------------------------------------
+# Copyright (c) 2017 SUSE Linux Products GmbH. All Rights Reserved.
+# Author: Nikolay Borisov <nborisov@suse.com>
+#
+#
+# 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.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/punch
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_os Linux
+_require_scratch
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "fiemap" "ranged"
+
+_scratch_mkfs > $seqres.full 2>&1
+_scratch_mount || _fail "mount failure"
+
+file=$SCRATCH_MNT/testfile
+$XFS_IO_PROG -f -c "falloc 0 1m" $file 
+for i in {0..31}; do $XFS_IO_PROG -c "fpunch $(($i*32))k 16k" $file; done
+
+# Query 1 data extent between 16k..16k range
+echo "Basic data extent"
+$XFS_IO_PROG -c "fiemap -v 16k 16k" $file | _filter_fiemap 
+
+# Query data and hole extent
+echo "Data + Hole"
+$XFS_IO_PROG -c "fiemap -v 16k 20k" $file | _filter_fiemap
+
+echo "Hole + Data + Hole"
+$XFS_IO_PROG -c "fiemap -v 32k 40k" $file | _filter_fiemap
+
+echo "Beginning with a hole"
+$XFS_IO_PROG -c "fiemap -v 0 3k" $file | _filter_fiemap
+
+# Query for 0..160k that's 40 extents, more than the EXTENT_BATCH
+echo "Query more than 32 extents"
+$XFS_IO_PROG -c "fiemap -v 0 640k" $file | _filter_fiemap
+
+echo "Larger query than file size"
+$XFS_IO_PROG -c "fiemap -v 0 2m" $file | _filter_fiemap
+
+#mapping past eof shouldn't print anything"
+$XFS_IO_PROG -c "fiemap -v 2m" $file | _filter_fiemap
+
+#check everything without the first hole
+$XFS_IO_PROG -c "fiemap -v 16k" $file | wc -l
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/900.out b/tests/xfs/900.out
new file mode 100644
index 0000000..6ecf1b6
--- /dev/null
+++ b/tests/xfs/900.out
@@ -0,0 +1,119 @@ 
+QA output created by 900
+Basic data extent
+0: [32..63]: unwritten
+Data + Hole
+0: [32..63]: unwritten
+1: [64..95]: hole
+Hole + Data + Hole
+0: [64..95]: hole
+1: [96..127]: unwritten
+2: [128..159]: hole
+Beginning with a hole
+0: [0..31]: hole
+Query more than 32 extents
+0: [0..31]: hole
+1: [32..63]: unwritten
+2: [64..95]: hole
+3: [96..127]: unwritten
+4: [128..159]: hole
+5: [160..191]: unwritten
+6: [192..223]: hole
+7: [224..255]: unwritten
+8: [256..287]: hole
+9: [288..319]: unwritten
+10: [320..351]: hole
+11: [352..383]: unwritten
+12: [384..415]: hole
+13: [416..447]: unwritten
+14: [448..479]: hole
+15: [480..511]: unwritten
+16: [512..543]: hole
+17: [544..575]: unwritten
+18: [576..607]: hole
+19: [608..639]: unwritten
+20: [640..671]: hole
+21: [672..703]: unwritten
+22: [704..735]: hole
+23: [736..767]: unwritten
+24: [768..799]: hole
+25: [800..831]: unwritten
+26: [832..863]: hole
+27: [864..895]: unwritten
+28: [896..927]: hole
+29: [928..959]: unwritten
+30: [960..991]: hole
+31: [992..1023]: unwritten
+32: [1024..1055]: hole
+33: [1056..1087]: unwritten
+34: [1088..1119]: hole
+35: [1120..1151]: unwritten
+36: [1152..1183]: hole
+37: [1184..1215]: unwritten
+38: [1216..1247]: hole
+39: [1248..1279]: unwritten
+Larger query than file size
+0: [0..31]: hole
+1: [32..63]: unwritten
+2: [64..95]: hole
+3: [96..127]: unwritten
+4: [128..159]: hole
+5: [160..191]: unwritten
+6: [192..223]: hole
+7: [224..255]: unwritten
+8: [256..287]: hole
+9: [288..319]: unwritten
+10: [320..351]: hole
+11: [352..383]: unwritten
+12: [384..415]: hole
+13: [416..447]: unwritten
+14: [448..479]: hole
+15: [480..511]: unwritten
+16: [512..543]: hole
+17: [544..575]: unwritten
+18: [576..607]: hole
+19: [608..639]: unwritten
+20: [640..671]: hole
+21: [672..703]: unwritten
+22: [704..735]: hole
+23: [736..767]: unwritten
+24: [768..799]: hole
+25: [800..831]: unwritten
+26: [832..863]: hole
+27: [864..895]: unwritten
+28: [896..927]: hole
+29: [928..959]: unwritten
+30: [960..991]: hole
+31: [992..1023]: unwritten
+32: [1024..1055]: hole
+33: [1056..1087]: unwritten
+34: [1088..1119]: hole
+35: [1120..1151]: unwritten
+36: [1152..1183]: hole
+37: [1184..1215]: unwritten
+38: [1216..1247]: hole
+39: [1248..1279]: unwritten
+40: [1280..1311]: hole
+41: [1312..1343]: unwritten
+42: [1344..1375]: hole
+43: [1376..1407]: unwritten
+44: [1408..1439]: hole
+45: [1440..1471]: unwritten
+46: [1472..1503]: hole
+47: [1504..1535]: unwritten
+48: [1536..1567]: hole
+49: [1568..1599]: unwritten
+50: [1600..1631]: hole
+51: [1632..1663]: unwritten
+52: [1664..1695]: hole
+53: [1696..1727]: unwritten
+54: [1728..1759]: hole
+55: [1760..1791]: unwritten
+56: [1792..1823]: hole
+57: [1824..1855]: unwritten
+58: [1856..1887]: hole
+59: [1888..1919]: unwritten
+60: [1920..1951]: hole
+61: [1952..1983]: unwritten
+62: [1984..2015]: hole
+63: [2016..2047]: unwritten
+65