Re: [patch 2/2 V3] xfstests: xfs_tosspages() test addition

[Andrew Dahl <adahl@sgi.com>]

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Tests the XFS_IOC_ZERO_RANGE ioctl by way of the "xfs_io zero" utility
to ensure it is tossing the expected ranges.

The ranges tested are [0,1] [0,4095] [0,4096] [0,4097] [4095,8191]
  [4095,8192] [4095,8193] [4096,8192] [1024,4096]

Signed-off-by: Andrew Dahl <adahl@sgi.com>

---

Index: xfstests/290
===================================================================
--- /dev/null
+++ xfstests/290
@@ -0,0 +1,94 @@
+#! /bin/bash
+# FS QA Test No. 290
+#
+# Makes calls to XFS_IOC_ZERO_RANGE and checks tossed ranges
+#
+# Nothing should be tossed unless the range includes a page boundry
+#
+# Primarily tests page boundries and boundries that are
+#  off-by-one to ensure we're only tossing what's expected
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2012 SGI.  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
+#-----------------------------------------------------------------------
+#
+# creator
+owner=adahl@sgi.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs xfs
+_supported_os Linux
+
+_require_xfs_io_zero
+
+testfile=$TEST_DIR/290.$$
+
+test_zero()
+{
+	zero_start=$1
+	zero_len=$2
+
+	$XFS_IO_PROG -f -t -c "pwrite -S 0x41 0 4096" \
+                      -c "pwrite -S 0x42 4096 4096" \
+                      -c "zero $zero_start $zero_len" \
+                      -c "pread -v 0 8192" \
+                      $testfile | _filter_xfs_io_unique
+}
+
+# [0,1] -- Shouldn't toss anything
+test_zero    0    1
+
+#[0,4095] -- Shouldn't toss anything
+test_zero    0 4095
+
+#[0,4096] -- Should toss first page
+test_zero    0 4096
+
+#[0,4097] -- Should toss first page
+test_zero    0 4097
+
+#[4095,8191] -- Should toss last byte of first page
+test_zero 4095 4096
+
+#[4095,8192] -- Should toss second page & last byte of first page
+test_zero 4095 4097
+
+#[4095,8193] -- Should toss second page & last byte of first page
+test_zero 4095 4098
+
+#[4096,8192] -- Should toss second page
+test_zero 4096 4096
+
+#[1024,5120] -- Should toss from 1024 to end of first page
+test_zero 1024 4096
+
+# success, all done
+status=0
+exit
Index: xfstests/290.out
===================================================================
--- /dev/null
+++ xfstests/290.out
@@ -0,0 +1,96 @@
+QA output created by 290
+wrote 4096/4096 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 4096
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+00000000:  41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41  AAAAAAAAAAAAAAAA
+*
+00001000:  42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42  BBBBBBBBBBBBBBBB
+*
+read 8192/8192 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 4096
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+00000000:  41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41  AAAAAAAAAAAAAAAA
+*
+00001000:  42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42  BBBBBBBBBBBBBBBB
+*
+read 8192/8192 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 4096
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
+*
+00001000:  42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42  BBBBBBBBBBBBBBBB
+*
+read 8192/8192 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 4096
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
+*
+00001000:  42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42  BBBBBBBBBBBBBBBB
+*
+read 8192/8192 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 4096
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+00000000:  41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41  AAAAAAAAAAAAAAAA
+*
+00000ff0:  41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 00  AAAAAAAAAAAAAAA.
+00001000:  42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42  BBBBBBBBBBBBBBBB
+*
+read 8192/8192 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 4096
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+00000000:  41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41  AAAAAAAAAAAAAAAA
+*
+00000ff0:  41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 00  AAAAAAAAAAAAAAA.
+00001000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
+*
+read 8192/8192 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 4096
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+00000000:  41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41  AAAAAAAAAAAAAAAA
+*
+00000ff0:  41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 00  AAAAAAAAAAAAAAA.
+00001000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
+*
+read 8192/8192 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 4096
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+00000000:  41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41  AAAAAAAAAAAAAAAA
+*
+00001000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
+*
+read 8192/8192 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 4096
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+00000000:  41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41  AAAAAAAAAAAAAAAA
+*
+00000400:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
+*
+00001000:  42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42  BBBBBBBBBBBBBBBB
+*
+read 8192/8192 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Index: xfstests/group
===================================================================
--- xfstests.orig/group
+++ xfstests/group
@@ -408,3 +408,4 @@ deprecated
 287 auto dump quota quick
 288 auto quick ioctl trim
 289 auto quick
+290 auto rw prealloc quick ioctl
Index: xfstests/common.rc
===================================================================
--- xfstests.orig/common.rc
+++ xfstests/common.rc
@@ -957,6 +957,14 @@ _user_do()
     fi
 }
 
+# check that xfs_io, kernel, and filesystem all support zero
+_require_xfs_io_zero()
+{
+	testio=`$XFS_IO_PROG -c "zero help" 2>&1`
+	echo $testio | grep -q 'command "zero" not found' && \
+		_notrun "zero command not supported"
+}
+
 # check that xfs_io, glibc, kernel, and filesystem all (!) support
 # fallocate
 #


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