From: Darrick J. Wong Date: Mon, 16 Nov 2015 21:40:08 +0000 (+1100) Subject: reflink: test that CoW writes fail when we're out of space X-Git-Tag: v2022.05.01~2753 X-Git-Url: http://git.apps.os.sepia.ceph.com/?p=xfstests-dev.git;a=commitdiff_plain;h=db4284f3124ec95e371d0f8bdbd3659944e51881 reflink: test that CoW writes fail when we're out of space Ensure that copy-on-writing a reflinked file when there's no free disk space reflects the desired ENOSPC back to userspace during the write call. Tests the buffered IO, direct IO, and mmap write paths. Signed-off-by: Darrick J. Wong Acked-by: Christoph Hellwig Signed-off-by: Dave Chinner --- diff --git a/tests/generic/171 b/tests/generic/171 new file mode 100755 index 00000000..99e4d5e7 --- /dev/null +++ b/tests/generic/171 @@ -0,0 +1,107 @@ +#! /bin/bash +# FS QA Test No. 171 +# +# Reflink a file, use up the rest of the space, then try to observe ENOSPC +# while copy-on-writing the file via the page cache. +# +#----------------------------------------------------------------------- +# 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".* "$TESTDIR1" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_scratch_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +echo "Format and mount" +_scratch_mkfs > "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 + +TESTDIR="$SCRATCH_MNT/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +NR_BLKS=10240 +umount "$SCRATCH_MNT" +SZ_BYTES=$((NR_BLKS * 8 * BLKSZ)) +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create a big file and reflink it" +_pwrite_byte 0x61 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" >> "$seqres.full" 2>&1 +_cp_reflink "$TESTDIR/bigfile" "$TESTDIR/clonefile" +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' "$TESTDIR")" +touch "$TESTDIR/file0" "$TESTDIR/file1" +_pwrite_byte 0x61 0 $((BLKSZ * NR_FREE)) "$TESTDIR/eat_my_space" >> "$seqres.full" 2>&1 +sync + +echo "CoW the big file" +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +echo "Remount and try CoW again" +_scratch_remount + +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount "$SCRATCH_MNT" +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/171.out b/tests/generic/171.out new file mode 100644 index 00000000..c2b0dddc --- /dev/null +++ b/tests/generic/171.out @@ -0,0 +1,10 @@ +QA output created by 171 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +CoW the big file +pwrite64: No space left on device +Remount and try CoW again +pwrite64: No space left on device +Check scratch fs diff --git a/tests/generic/172 b/tests/generic/172 new file mode 100755 index 00000000..eb00f0ac --- /dev/null +++ b/tests/generic/172 @@ -0,0 +1,107 @@ +#! /bin/bash +# FS QA Test No. 172 +# +# Reflink a file that uses more than half of the space, then try to observe +# ENOSPC while copy-on-writing the file via the page cache. +# +#----------------------------------------------------------------------- +# 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 "$tmp".* "$TESTDIR1" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_scratch_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +echo "Format and mount" +_scratch_mkfs > "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 + +TESTDIR="$SCRATCH_MNT/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +NR_BLKS=10240 +umount "$SCRATCH_MNT" +SZ_BYTES=$((NR_BLKS * 3 / 2 * BLKSZ)) +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create a big file and reflink it" +_pwrite_byte 0x61 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" >> "$seqres.full" 2>&1 +_cp_reflink "$TESTDIR/bigfile" "$TESTDIR/clonefile" +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' "$TESTDIR")" +touch "$TESTDIR/file0" "$TESTDIR/file1" +_pwrite_byte 0x61 0 $((BLKSZ * NR_FREE)) "$TESTDIR/eat_my_space" >> "$seqres.full" 2>&1 +sync + +echo "CoW the big file" +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +echo "Remount and try CoW again" +_scratch_remount + +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount "$SCRATCH_MNT" +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/172.out b/tests/generic/172.out new file mode 100644 index 00000000..3913dd7e --- /dev/null +++ b/tests/generic/172.out @@ -0,0 +1,10 @@ +QA output created by 172 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +CoW the big file +pwrite64: No space left on device +Remount and try CoW again +pwrite64: No space left on device +Check scratch fs diff --git a/tests/generic/173 b/tests/generic/173 new file mode 100755 index 00000000..76463d2e --- /dev/null +++ b/tests/generic/173 @@ -0,0 +1,109 @@ +#! /bin/bash +# FS QA Test No. 173 +# +# Reflink a file, use up the rest of the space, then try to observe ENOSPC +# while copy-on-writing the file via mmap. +# +#----------------------------------------------------------------------- +# 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".* "$TESTDIR1" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_scratch_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +echo "Format and mount" +_scratch_mkfs > "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 + +TESTDIR="$SCRATCH_MNT/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +NR_BLKS=10240 +umount "$SCRATCH_MNT" +SZ_BYTES=$((NR_BLKS * 8 * BLKSZ)) +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create a big file and reflink it" +_pwrite_byte 0x61 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" >> "$seqres.full" 2>&1 +_cp_reflink "$TESTDIR/bigfile" "$TESTDIR/clonefile" +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' "$TESTDIR")" +touch "$TESTDIR/file0" "$TESTDIR/file1" +_pwrite_byte 0x61 0 $((BLKSZ * NR_FREE)) "$TESTDIR/eat_my_space" >> "$seqres.full" 2>&1 +sync + +echo "mmap CoW the big file" +out="$(_mwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +err="$?" +if [ "$err" -lt 128 ]; then + echo "mmap CoW should have failed with SIGBUS, got SIG$(kill -l $err)" +fi + +echo "Remount and try CoW again" +_scratch_remount + +out="$(_mwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +err="$?" +if [ "$err" -lt 128 ]; then + echo "mmap CoW should have failed with SIGBUS, got SIG$(kill -l $err)" +fi + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount "$SCRATCH_MNT" +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/173.out b/tests/generic/173.out new file mode 100644 index 00000000..49abb17a --- /dev/null +++ b/tests/generic/173.out @@ -0,0 +1,8 @@ +QA output created by 173 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +mmap CoW the big file +Remount and try CoW again +Check scratch fs diff --git a/tests/generic/174 b/tests/generic/174 new file mode 100755 index 00000000..8df292ae --- /dev/null +++ b/tests/generic/174 @@ -0,0 +1,107 @@ +#! /bin/bash +# FS QA Test No. 174 +# +# Reflink a file, use up the rest of the space, then try to observe ENOSPC +# while copy-on-writing the file via direct-io. +# +#----------------------------------------------------------------------- +# 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 "$tmp".* "$TESTDIR1" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_scratch_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +echo "Format and mount" +_scratch_mkfs > "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 + +TESTDIR="$SCRATCH_MNT/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +NR_BLKS=10240 +umount "$SCRATCH_MNT" +SZ_BYTES=$((NR_BLKS * 8 * BLKSZ)) +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create a big file and reflink it" +_pwrite_byte 0x61 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" >> "$seqres.full" 2>&1 +_cp_reflink "$TESTDIR/bigfile" "$TESTDIR/clonefile" +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' "$TESTDIR")" +touch "$TESTDIR/file0" "$TESTDIR/file1" +_pwrite_byte 0x61 0 $((BLKSZ * NR_FREE)) "$TESTDIR/eat_my_space" >> "$seqres.full" 2>&1 +sync + +echo "CoW the big file" +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" -d 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +echo "Remount and try CoW again" +_scratch_remount + +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" -d 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount "$SCRATCH_MNT" +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/174.out b/tests/generic/174.out new file mode 100644 index 00000000..702d0675 --- /dev/null +++ b/tests/generic/174.out @@ -0,0 +1,10 @@ +QA output created by 174 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +CoW the big file +pwrite64: No space left on device +Remount and try CoW again +pwrite64: No space left on device +Check scratch fs diff --git a/tests/generic/group b/tests/generic/group index 6ae31053..09a78289 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -173,6 +173,10 @@ 168 auto quick clone 169 rw metadata auto quick 170 auto quick clone +171 auto quick clone +172 auto quick clone +173 auto quick clone +174 auto quick clone 184 metadata auto quick 192 atime auto 193 metadata auto quick