From 30997917e50a4bc1341d70bdf4ab24d20aa9bbd7 Mon Sep 17 00:00:00 2001 From: Koen De Wit Date: Mon, 20 Jan 2014 13:56:37 +1100 Subject: [PATCH] btrfs: sparse copy between different filesystems/mountpoints Check if creating a sparse copy ("reflink") of a file on btrfs expectedly fails when it's done between different filesystems or different mount points of the same filesystem. For both situations, these actions are executed: - Copy a file with the reflink=auto option. A normal copy should be created. - Copy a file with the reflink=always option. Should result in error. [sandeen: mostly cosmetic changes] Signed-off-by: Koen De Wit Signed-off-by: Eric Sandeen Signed-off-by: Dave Chinner --- tests/btrfs/029 | 108 ++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/029.out | 15 ++++++ tests/btrfs/group | 1 + 3 files changed, 124 insertions(+) create mode 100644 tests/btrfs/029 create mode 100644 tests/btrfs/029.out diff --git a/tests/btrfs/029 b/tests/btrfs/029 new file mode 100644 index 00000000..1fd2a937 --- /dev/null +++ b/tests/btrfs/029 @@ -0,0 +1,108 @@ +#! /bin/bash +# FS QA Test No. 029 +# +# Check if creating a sparse copy ("reflink") of a file on btrfs +# expectedly fails when it's done between different filesystems or +# different mount points of the same filesystem. +# +# For both situations, these actions are executed: +# - Copy a file with the reflink=auto option. +# A normal copy should be created. +# - Copy a file with the reflink=always option. Should result in +# error. +# +#----------------------------------------------------------------------- +# Copyright (c) 2014, 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` +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() +{ + umount $SCRATCH_MNT &>/dev/null + cd / + rm -f $tmp.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter + +# real QA test starts here +_supported_fs btrfs +_supported_os Linux + +_require_scratch +_require_cp_reflink + +SOURCE_DIR=$TEST_DIR/test-$seq +CROSS_DEV_DIR=$SCRATCH_MNT/test-$seq +# mount point & target for twice-mounted device +TEST_DIR2=$TEST_DIR/mount2 +DUAL_MOUNT_DIR=$SCRATCH_MNT/test-bis-$seq + +rm -rf $SOURCE_DIR +mkdir $SOURCE_DIR + +rm -f $seqres.full + +_scratch_mkfs +$XFS_IO_PROG -f -c 'pwrite -S 0x61 0 9000' $SOURCE_DIR/original \ + >> $seqres.full + +_filter_testdirs() +{ + _filter_test_dir | _filter_scratch +} + +_create_reflinks_to() +{ + # auto reflink, should fall back to non-reflink + rm -rf $1; mkdir $1 + echo "reflink=auto:" + cp --reflink=auto $SOURCE_DIR/original $1/copy + md5sum $SOURCE_DIR/original | _filter_testdirs + md5sum $1/copy | _filter_testdirs + + # always reflink, should fail outright + rm -rf $1; mkdir $1 + echo "reflink=always:" + cp --reflink=always $SOURCE_DIR/original $1/copyfail \ + 2>&1 | _filter_testdirs + + # The failed target actually gets created by cp: + ls $1/copyfail | _filter_testdirs +} + +echo "test reflinks across different devices" +_scratch_mount +_create_reflinks_to $CROSS_DEV_DIR +_scratch_unmount + +echo "test reflinks across different mountpoints of same device" +mount $TEST_DEV $SCRATCH_MNT || _fail "Couldn't double-mount $TEST_DEV" +_create_reflinks_to $DUAL_MOUNT_DIR +umount $SCRATCH_MNT + +# success, all done +status=0 +exit diff --git a/tests/btrfs/029.out b/tests/btrfs/029.out new file mode 100644 index 00000000..655c081b --- /dev/null +++ b/tests/btrfs/029.out @@ -0,0 +1,15 @@ +QA output created by 029 +test reflinks across different devices +reflink=auto: +42d69d1a6d333a7ebdf64792a555e392 TEST_DIR/test-029/original +42d69d1a6d333a7ebdf64792a555e392 SCRATCH_MNT/test-029/copy +reflink=always: +cp: failed to clone 'SCRATCH_MNT/test-029/copyfail': Invalid cross-device link +SCRATCH_MNT/test-029/copyfail +test reflinks across different mountpoints of same device +reflink=auto: +42d69d1a6d333a7ebdf64792a555e392 TEST_DIR/test-029/original +42d69d1a6d333a7ebdf64792a555e392 SCRATCH_MNT/test-bis-029/copy +reflink=always: +cp: failed to clone 'SCRATCH_MNT/test-bis-029/copyfail': Invalid cross-device link +SCRATCH_MNT/test-bis-029/copyfail diff --git a/tests/btrfs/group b/tests/btrfs/group index 66571020..8eb8c4f4 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -31,3 +31,4 @@ 026 auto quick 027 auto quick 028 auto quick +029 auto quick -- 2.30.2