[07/11] reflink: test accuracy of free block counts

Message ID	20151111192717.15056.86798.stgit@birch.djwong.org (mailing list archive)
State	Not Applicable
Headers	show Return-Path: <linux-btrfs-owner@kernel.org> Subject: [PATCH 07/11] reflink: test accuracy of free block counts From: "Darrick J. Wong" <darrick.wong@oracle.com> To: hch@infradead.org, david@fromorbit.com, darrick.wong@oracle.com Cc: fstests@vger.kernel.org, xfs@oss.sgi.com, tao.peng@primarydata.com, linux-ext4@vger.kernel.org, Anna.Schumaker@netapp.com, linux-btrfs@vger.kernel.org Date: Wed, 11 Nov 2015 11:27:17 -0800 Message-ID: <20151111192717.15056.86798.stgit@birch.djwong.org> In-Reply-To: <20151111192628.15056.6451.stgit@birch.djwong.org> References: <20151111192628.15056.6451.stgit@birch.djwong.org> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk

diff --git a/tests/generic/830 b/tests/generic/830 new file mode 100755 index 0000000..d85bacf --- /dev/null +++ b/tests/generic/830 @@ -0,0 +1,78 @@ +#! /bin/bash +# FS QA Test No. 830 +# +# Ensure that reflinking a file N times doesn't eat a lot of blocks +# - Create a file and record fs block usage +# - Create some reflink copies +# - Compare fs block usage to before +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. 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 -rf "$tmp".* "$TESTDIR" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_test_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +TESTDIR="$TEST_DIR/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create the original file blocks" +BLKSZ="$(stat -f $TESTDIR -c '%S')" +BLKS=2000 +MARGIN=100 +SZ=$((BLKSZ * BLKS)) +NR=7 +_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full" +sync +FREE_BLOCKS0=$(stat -f "$TESTDIR" -c '%f') + +echo "Create the reflink copies" +for i in `seq 2 $NR`; do + _cp_reflink "$TESTDIR/file1" "$TESTDIR/file.$i" +done +_test_remount +FREE_BLOCKS1=$(stat -f "$TESTDIR" -c '%f') + +_within_tolerance "free blocks after reflink" $FREE_BLOCKS1 $FREE_BLOCKS0 $MARGIN -v + +# success, all done +status=0 +exit diff --git a/tests/generic/830.out b/tests/generic/830.out new file mode 100644 index 0000000..76e2f1d --- /dev/null +++ b/tests/generic/830.out @@ -0,0 +1,4 @@ +QA output created by 830 +Create the original file blocks +Create the reflink copies +free blocks after reflink is in range diff --git a/tests/generic/831 b/tests/generic/831 new file mode 100755 index 0000000..d729769 --- /dev/null +++ b/tests/generic/831 @@ -0,0 +1,98 @@ +#! /bin/bash +# FS QA Test No. 831 +# +# Ensure that deleting all copies of a file reflinked N times releases the blocks +# - Record fs block usage (0) +# - Create a file and some reflink copies +# - Record fs block usage (1) +# - Delete some copies of the file +# - Record fs block usage (2) +# - Delete all copies of the file +# - Compare fs block usage to (2), (1), and (0) +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. 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 -rf "$tmp".* "$TESTDIR" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_test_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +TESTDIR="$TEST_DIR/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create the original file blocks" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +BLKS=2000 +MARGIN=100 +SZ=$((BLKSZ * BLKS)) +FREE_BLOCKS0=$(stat -f "$TESTDIR" -c '%f') +NR=7 +_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full" +sync + +echo "Create the reflink copies" +for i in `seq 2 $NR`; do + _cp_reflink "$TESTDIR/file1" "$TESTDIR/file.$i" +done +_cp_reflink "$TESTDIR/file1" "$TESTDIR/survivor" +_test_remount +FREE_BLOCKS1=$(stat -f "$TESTDIR" -c '%f') + +echo "Delete most of the files" +rm -rf "$TESTDIR"/file* +_test_remount +FREE_BLOCKS2=$(stat -f "$TESTDIR" -c '%f') + +echo "Delete all the files" +rm -rf "$TESTDIR"/* +_test_remount +FREE_BLOCKS3=$(stat -f "$TESTDIR" -c '%f') +#echo $FREE_BLOCKS0 $FREE_BLOCKS1 $FREE_BLOCKS2 $FREE_BLOCKS3 + +_within_tolerance "free blocks after reflink" $FREE_BLOCKS1 $((FREE_BLOCKS0 - BLKS)) $MARGIN -v + +_within_tolerance "free blocks after deleting some reflink copies" $FREE_BLOCKS2 $FREE_BLOCKS1 $MARGIN -v + +_within_tolerance "free blocks after deleting all copies" $FREE_BLOCKS3 $FREE_BLOCKS0 $MARGIN -v + +# success, all done +status=0 +exit diff --git a/tests/generic/831.out b/tests/generic/831.out new file mode 100644 index 0000000..88e0a23 --- /dev/null +++ b/tests/generic/831.out @@ -0,0 +1,8 @@ +QA output created by 831 +Create the original file blocks +Create the reflink copies +Delete most of the files +Delete all the files +free blocks after reflink is in range +free blocks after deleting some reflink copies is in range +free blocks after deleting all copies is in range diff --git a/tests/generic/832 b/tests/generic/832 new file mode 100755 index 0000000..4f12b77 --- /dev/null +++ b/tests/generic/832 @@ -0,0 +1,103 @@ +#! /bin/bash +# FS QA Test No. 832 +# +# Ensure that punching all copies of a file reflinked N times releases the blocks +# - Record fs block usage (0) +# - Create a file and some reflink copies +# - Record fs block usage (1) +# - Punch some blocks of the copies +# - Record fs block usage (2) +# - Punch all blocks of the copies +# - Compare fs block usage to (2), (1), and (0) +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. 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 -rf "$tmp".* "$TESTDIR" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_test_reflink +_require_cp_reflink +_require_xfs_io_command "fpunch" + +rm -f "$seqres.full" + +TESTDIR="$TEST_DIR/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create the original file blocks" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +BLKS=2000 +MARGIN=100 +SZ=$((BLKSZ * BLKS)) +FREE_BLOCKS0=$(stat -f "$TESTDIR" -c '%f') +NR=4 +_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full" +sync + +echo "Create the reflink copies" +for i in `seq 2 $NR`; do + _cp_reflink "$TESTDIR/file1" "$TESTDIR/file$i" +done +_test_remount +FREE_BLOCKS1=$(stat -f "$TESTDIR" -c '%f') + +echo "Punch most of the blocks" +"$XFS_IO_PROG" -f -c "fpunch 0 $SZ" "$TESTDIR/file2" +"$XFS_IO_PROG" -f -c "fpunch 0 $((SZ / 2))" "$TESTDIR/file3" +"$XFS_IO_PROG" -f -c "fpunch $((SZ / 2)) $((SZ / 2))" "$TESTDIR/file4" +_test_remount +FREE_BLOCKS2=$(stat -f "$TESTDIR" -c '%f') + +echo "Punch all the files" +for i in `seq 2 $NR`; do + "$XFS_IO_PROG" -f -c "fpunch 0 $SZ" "$TESTDIR/file$i" +done +"$XFS_IO_PROG" -f -c "fpunch 0 $SZ" "$TESTDIR/file1" +_test_remount +FREE_BLOCKS3=$(stat -f "$TESTDIR" -c '%f') +#echo $FREE_BLOCKS0 $FREE_BLOCKS1 $FREE_BLOCKS2 $FREE_BLOCKS3 + +_within_tolerance "free blocks after reflink" $FREE_BLOCKS1 $((FREE_BLOCKS0 - BLKS)) $MARGIN -v + +_within_tolerance "free blocks after punching some reflink copies" $FREE_BLOCKS2 $FREE_BLOCKS1 $MARGIN -v + +_within_tolerance "free blocks after punching all copies" $FREE_BLOCKS3 $FREE_BLOCKS0 $MARGIN -v + +# success, all done +status=0 +exit diff --git a/tests/generic/832.out b/tests/generic/832.out new file mode 100644 index 0000000..bb95578 --- /dev/null +++ b/tests/generic/832.out @@ -0,0 +1,8 @@ +QA output created by 832 +Create the original file blocks +Create the reflink copies +Punch most of the blocks +Punch all the files +free blocks after reflink is in range +free blocks after punching some reflink copies is in range +free blocks after punching all copies is in range diff --git a/tests/generic/833 b/tests/generic/833 new file mode 100755 index 0000000..07dfabf --- /dev/null +++ b/tests/generic/833 @@ -0,0 +1,102 @@ +#! /bin/bash +# FS QA Test No. 833 +# +# Ensure that collapse-range on all copies of a file reflinked N times releases the blocks +# - Record fs block usage (0) +# - Create a file and some reflink copies +# - Record fs block usage (1) +# - Collapse-range some blocks of the copies +# - Record fs block usage (2) +# - Truncate all blocks of the copies +# - Compare fs block usage to (2), (1), and (0) +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. 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 -rf "$tmp".* "$TESTDIR" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_test_reflink +_require_cp_reflink +_require_xfs_io_command "fcollapse" + +rm -f "$seqres.full" + +TESTDIR="$TEST_DIR/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create the original file blocks" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +BLKS=2000 +MARGIN=100 +SZ=$((BLKSZ * BLKS)) +FREE_BLOCKS0=$(stat -f "$TESTDIR" -c '%f') +NR=4 +_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full" +_test_remount + +echo "Create the reflink copies" +for i in `seq 2 $NR`; do + _cp_reflink "$TESTDIR/file1" "$TESTDIR/file$i" +done +_test_remount +FREE_BLOCKS1=$(stat -f "$TESTDIR" -c '%f') + +echo "Collapse most of the blocks" +"$XFS_IO_PROG" -f -c "fcollapse 0 $(((BLKS - 1) * BLKSZ))" $TESTDIR/file2 +"$XFS_IO_PROG" -f -c "fcollapse 0 $((SZ / 2))" $TESTDIR/file3 +"$XFS_IO_PROG" -f -c "fcollapse $((SZ / 2)) $(( ((BLKS / 2) - 1) * BLKSZ))" $TESTDIR/file4 +_test_remount +FREE_BLOCKS2=$(stat -f "$TESTDIR" -c '%f') + +echo "Collpase nearly all the files" +"$XFS_IO_PROG" -f -c "fcollapse 0 $(( ((BLKS / 2) - 1) * BLKSZ))" $TESTDIR/file3 +"$XFS_IO_PROG" -f -c "fcollapse 0 $((SZ / 2))" $TESTDIR/file4 +"$XFS_IO_PROG" -f -c "fcollapse 0 $(( (BLKS - 1) * BLKSZ))" $TESTDIR/file1 +_test_remount +FREE_BLOCKS3=$(stat -f "$TESTDIR" -c '%f') +#echo $FREE_BLOCKS0 $FREE_BLOCKS1 $FREE_BLOCKS2 $FREE_BLOCKS3 + +_within_tolerance "free blocks after reflink" $FREE_BLOCKS1 $((FREE_BLOCKS0 - BLKS)) $MARGIN -v + +_within_tolerance "free blocks after fcollapsing some reflink copies" $FREE_BLOCKS2 $FREE_BLOCKS1 $MARGIN -v + +_within_tolerance "free blocks after fcollapsing all copies" $FREE_BLOCKS3 $FREE_BLOCKS0 $MARGIN -v + +# success, all done +status=0 +exit diff --git a/tests/generic/833.out b/tests/generic/833.out new file mode 100644 index 0000000..a9a2941 --- /dev/null +++ b/tests/generic/833.out @@ -0,0 +1,8 @@ +QA output created by 833 +Create the original file blocks +Create the reflink copies +Collapse most of the blocks +Collpase nearly all the files +free blocks after reflink is in range +free blocks after fcollapsing some reflink copies is in range +free blocks after fcollapsing all copies is in range diff --git a/tests/generic/834 b/tests/generic/834 new file mode 100755 index 0000000..d24dfa5 --- /dev/null +++ b/tests/generic/834 @@ -0,0 +1,110 @@ +#! /bin/bash +# FS QA Test No. 834 +# +# Ensure that CoW on all copies of a file reflinked N times increases block count +# - Record fs block usage (0) +# - Create a file and some reflink copies +# - Record fs block usage (1) +# - CoW some blocks of the copies +# - Record fs block usage (2) +# - CoW all the rest of the blocks of the copies +# - Compare fs block usage to (2), (1), and (0) +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. 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 -rf "$tmp".* "$TESTDIR" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_test_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +TESTDIR="$TEST_DIR/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create the original file blocks" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +BLKS=2000 +MARGIN=100 +FREE_BLOCKS0=$(stat -f "$TESTDIR" -c '%f') +NR=4 +SZ=$((BLKS * BLKSZ)) +_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full" +_test_remount + +echo "Create the reflink copies" +for i in `seq 2 $NR`; do + _cp_reflink "$TESTDIR/file1" "$TESTDIR/file$i" +done +_test_remount +FREE_BLOCKS1=$(stat -f "$TESTDIR" -c '%f') + +echo "Rewrite some of the blocks" +_pwrite_byte 0x62 0 $SZ "$TESTDIR/file2" >> "$seqres.full" +_pwrite_byte 0x63 0 $((SZ / 2)) "$TESTDIR/file3" >> "$seqres.full" +_pwrite_byte 0x64 $((SZ / 2)) $((SZ / 2)) "$TESTDIR/file4" >> "$seqres.full" +_test_remount +FREE_BLOCKS2=$(stat -f "$TESTDIR" -c '%f') + +echo "Rewrite all the files" +_pwrite_byte 0x62 0 $SZ "$TESTDIR/file2" >> "$seqres.full" +_pwrite_byte 0x63 0 $SZ "$TESTDIR/file3" >> "$seqres.full" +_pwrite_byte 0x64 0 $SZ "$TESTDIR/file4" >> "$seqres.full" +_test_remount +FREE_BLOCKS3=$(stat -f "$TESTDIR" -c '%f') + +echo "Rewrite the original file" +_pwrite_byte 0x65 0 $SZ "$TESTDIR/file1" >> "$seqres.full" +_test_remount +FREE_BLOCKS4=$(stat -f "$TESTDIR" -c '%f') +#echo $FREE_BLOCKS0 $FREE_BLOCKS1 $FREE_BLOCKS2 $FREE_BLOCKS3 $FREE_BLOCKS4 + +_within_tolerance "free blocks after reflinking" $FREE_BLOCKS1 $((FREE_BLOCKS0 - BLKS)) $MARGIN -v + +_within_tolerance "free blocks after partially CoWing some copies" $FREE_BLOCKS2 $((FREE_BLOCKS1 - (2 * BLKS))) $MARGIN -v + +_within_tolerance "free blocks after CoWing all copies" $FREE_BLOCKS3 $((FREE_BLOCKS2 - BLKS)) $MARGIN -v + +_within_tolerance "free blocks after overwriting original" $FREE_BLOCKS4 $FREE_BLOCKS3 $MARGIN -v + +_within_tolerance "free blocks after all tests" $FREE_BLOCKS4 $((FREE_BLOCKS0 - (4 * BLKS))) $MARGIN -v + +# success, all done +status=0 +exit diff --git a/tests/generic/834.out b/tests/generic/834.out new file mode 100644 index 0000000..e67e803 --- /dev/null +++ b/tests/generic/834.out @@ -0,0 +1,11 @@ +QA output created by 834 +Create the original file blocks +Create the reflink copies +Rewrite some of the blocks +Rewrite all the files +Rewrite the original file +free blocks after reflinking is in range +free blocks after partially CoWing some copies is in range +free blocks after CoWing all copies is in range +free blocks after overwriting original is in range +free blocks after all tests is in range diff --git a/tests/generic/835 b/tests/generic/835 new file mode 100755 index 0000000..881063b --- /dev/null +++ b/tests/generic/835 @@ -0,0 +1,114 @@ +#! /bin/bash +# FS QA Test No. 835 +# +# Ensure that CoW on all copies of a file reflinked N times increases block count +# - Record fs block usage (0) +# - Create a file and some reflink copies +# - Record fs block usage (1) +# - CoW some blocks of the copies +# - Record fs block usage (2) +# - CoW all the rest of the blocks of the copies +# - Compare fs block usage to (2), (1), and (0) +# +# The main difference from 834 is that we use zero range, directio, and +# mmap to mix things up a bit. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. 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 -rf "$tmp".* "$TESTDIR" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_test_reflink +_require_cp_reflink +_require_xfs_io_command "fzero" + +rm -f "$seqres.full" + +TESTDIR=$TEST_DIR/test-$seq +rm -rf $TESTDIR +mkdir $TESTDIR + +echo "Create the original file blocks" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +BLKS=2000 +MARGIN=100 +SZ=$((BLKSZ * BLKS)) +FREE_BLOCKS0=$(stat -f "$TESTDIR" -c '%f') +NR=4 +_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full" +_test_remount + +echo "Create the reflink copies" +for i in `seq 2 $NR`; do + _cp_reflink "$TESTDIR/file1" "$TESTDIR/file$i" +done +_test_remount +FREE_BLOCKS1=$(stat -f "$TESTDIR" -c '%f') + +echo "Rewrite some of the blocks" +"$XFS_IO_PROG" -f -c "fzero 0 $SZ" "$TESTDIR/file2" >> "$seqres.full" +_pwrite_byte 0x63 0 $((SZ / 2)) "$TESTDIR/file3" -d >> "$seqres.full" +_mwrite_byte 0x64 $((SZ / 2)) $((SZ / 2)) $SZ "$TESTDIR/file4" >> "$seqres.full" +_test_remount +FREE_BLOCKS2=$(stat -f "$TESTDIR" -c '%f') + +echo "Rewrite all the files" +_pwrite_byte 0x62 0 $SZ "$TESTDIR/file2" -d >> "$seqres.full" +_mwrite_byte 0x63 0 $SZ $SZ "$TESTDIR/file3" >> "$seqres.full" +"$XFS_IO_PROG" -f -c "fzero 0 $SZ" $TESTDIR/file4 >> "$seqres.full" +_test_remount +FREE_BLOCKS3=$(stat -f "$TESTDIR" -c '%f') + +echo "Rewrite the original file" +_pwrite_byte 0x65 0 $SZ "$TESTDIR/file1" >> "$seqres.full" +_test_remount +FREE_BLOCKS4=$(stat -f "$TESTDIR" -c '%f') +#echo $FREE_BLOCKS0 $FREE_BLOCKS1 $FREE_BLOCKS2 $FREE_BLOCKS3 $FREE_BLOCKS4 + +_within_tolerance "free blocks after reflinking" $FREE_BLOCKS1 $((FREE_BLOCKS0 - BLKS)) $MARGIN -v + +_within_tolerance "free blocks after partially CoWing some copies" $FREE_BLOCKS2 $((FREE_BLOCKS1 - (2 * BLKS))) $MARGIN -v + +_within_tolerance "free blocks after CoWing all copies" $FREE_BLOCKS3 $((FREE_BLOCKS2 - BLKS)) $MARGIN -v + +_within_tolerance "free blocks after overwriting original" $FREE_BLOCKS4 $FREE_BLOCKS3 $MARGIN -v + +_within_tolerance "free blocks after all tests" $FREE_BLOCKS4 $((FREE_BLOCKS0 - (4 * BLKS))) $MARGIN -v + +# success, all done +status=0 +exit diff --git a/tests/generic/835.out b/tests/generic/835.out new file mode 100644 index 0000000..c1103be --- /dev/null +++ b/tests/generic/835.out @@ -0,0 +1,11 @@ +QA output created by 835 +Create the original file blocks +Create the reflink copies +Rewrite some of the blocks +Rewrite all the files +Rewrite the original file +free blocks after reflinking is in range +free blocks after partially CoWing some copies is in range +free blocks after CoWing all copies is in range +free blocks after overwriting original is in range +free blocks after all tests is in range diff --git a/tests/generic/836 b/tests/generic/836 new file mode 100755 index 0000000..2e0639f --- /dev/null +++ b/tests/generic/836 @@ -0,0 +1,129 @@ +#! /bin/bash +# FS QA Test No. 836 +# +# Ensure that fallocate on reflinked files actually CoWs the shared blocks. +# - Record fs block usage (0) +# - Create a file and some reflink copies +# - Record fs block usage (1) +# - funshare half of one of the copies +# - Record fs block usage (2) +# - funshare all of the copies +# - Record fs block usage (3) +# - rewrite the original file +# - Record fs block usage (4) +# - Compare fs block usage of 0-4 to ensure that block usage behaves as +# we expect. +# +# "funshare" refers to fallocate copy-on-writing the shared blocks +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. 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 -rf "$tmp".* "$TESTDIR" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr +. ./common/reflink + +if [ $FSTYP = "btrfs" ]; then + _notrun "btrfs doesn't handle unshare on fallocate" +fi + +# real QA test starts here +_supported_os Linux +_require_test_reflink +_require_cp_reflink +_require_xfs_io_command "falloc" + +rm -f "$seqres.full" + +TESTDIR="$TEST_DIR/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create the original file blocks" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +BLKS=2000 +MARGIN=100 +SZ=$((BLKSZ * BLKS)) +FREE_BLOCKS0=$(stat -f "$TESTDIR" -c '%f') +NR=4 +_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full" +_test_remount + +echo "Create the reflink copies" +for i in `seq 2 $NR`; do + _cp_reflink "$TESTDIR/file1" "$TESTDIR/file$i" +done +_test_remount +FREE_BLOCKS1=$(stat -f "$TESTDIR" -c '%f') +lsattr -l $TESTDIR/ | _filter_test_dir + +echo "funshare part of a file" +"$XFS_IO_PROG" -f -c "falloc 0 $((SZ / 2))" "$TESTDIR/file2" +_test_remount +lsattr -l $TESTDIR/ | _filter_test_dir + +echo "funshare some of the copies" +"$XFS_IO_PROG" -f -c "falloc 0 $SZ" "$TESTDIR/file2" +"$XFS_IO_PROG" -f -c "falloc 0 $SZ" "$TESTDIR/file3" +_test_remount +FREE_BLOCKS2=$(stat -f "$TESTDIR" -c '%f') +lsattr -l $TESTDIR/ | _filter_test_dir + +echo "funshare the rest of the files" +"$XFS_IO_PROG" -f -c "falloc 0 $SZ" "$TESTDIR/file4" +"$XFS_IO_PROG" -f -c "falloc 0 $SZ" "$TESTDIR/file1" +_test_remount +FREE_BLOCKS3=$(stat -f "$TESTDIR" -c '%f') +lsattr -l $TESTDIR/ | _filter_test_dir + +echo "Rewrite the original file" +_pwrite_byte 0x65 0 $SZ "$TESTDIR/file1" >> "$seqres.full" +_test_remount +FREE_BLOCKS4=$(stat -f "$TESTDIR" -c '%f') +lsattr -l $TESTDIR/ | _filter_test_dir +#echo $FREE_BLOCKS0 $FREE_BLOCKS1 $FREE_BLOCKS2 $FREE_BLOCKS3 $FREE_BLOCKS4 + +_within_tolerance "free blocks after reflinking" $FREE_BLOCKS1 $((FREE_BLOCKS0 - BLKS)) $MARGIN -v + +_within_tolerance "free blocks after nocow'ing some copies" $FREE_BLOCKS2 $((FREE_BLOCKS1 - (2 * BLKS))) $MARGIN -v + +_within_tolerance "free blocks after nocow'ing all copies" $FREE_BLOCKS3 $((FREE_BLOCKS2 - BLKS)) $MARGIN -v + +_within_tolerance "free blocks after overwriting original" $FREE_BLOCKS4 $FREE_BLOCKS3 $MARGIN -v + +_within_tolerance "free blocks after all tests" $FREE_BLOCKS4 $((FREE_BLOCKS0 - (4 * BLKS))) $MARGIN -v + +# success, all done +status=0 +exit diff --git a/tests/generic/836.out b/tests/generic/836.out new file mode 100644 index 0000000..45f7750 --- /dev/null +++ b/tests/generic/836.out @@ -0,0 +1,32 @@ +QA output created by 836 +Create the original file blocks +Create the reflink copies +TEST_DIR/test-836/file1 --- +TEST_DIR/test-836/file2 --- +TEST_DIR/test-836/file3 --- +TEST_DIR/test-836/file4 --- +funshare part of a file +TEST_DIR/test-836/file1 --- +TEST_DIR/test-836/file2 --- +TEST_DIR/test-836/file3 --- +TEST_DIR/test-836/file4 --- +funshare some of the copies +TEST_DIR/test-836/file1 --- +TEST_DIR/test-836/file2 No_COW +TEST_DIR/test-836/file3 No_COW +TEST_DIR/test-836/file4 --- +funshare the rest of the files +TEST_DIR/test-836/file1 No_COW +TEST_DIR/test-836/file2 No_COW +TEST_DIR/test-836/file3 No_COW +TEST_DIR/test-836/file4 No_COW +Rewrite the original file +TEST_DIR/test-836/file1 No_COW +TEST_DIR/test-836/file2 No_COW +TEST_DIR/test-836/file3 No_COW +TEST_DIR/test-836/file4 No_COW +free blocks after reflinking is in range +free blocks after nocow'ing some copies is in range +free blocks after nocow'ing all copies is in range +free blocks after overwriting original is in range +free blocks after all tests is in range diff --git a/tests/generic/group b/tests/generic/group index 0c137ea..9b57872 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -237,5 +237,12 @@ 827 auto quick clone 828 auto quick clone 829 auto quick clone +830 auto quick clone +831 auto quick clone +832 auto quick clone +833 auto quick clone +834 auto quick clone +835 auto quick clone +836 auto quick clone 837 auto quick clone 838 auto quick clone

[07/11] reflink: test accuracy of free block counts

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Patch