| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2014, Oracle and/or its affiliates. All Rights Reserved. |
| # |
| # FS QA Test No. 031 |
| # |
| # Testing cross-subvolume sparse copy on btrfs |
| # - Create two subvolumes, mount one of them |
| # - Create a file on each (sub/root)volume, |
| # reflink them on the other volumes |
| # - Change one original and two reflinked files |
| # - Move reflinked files between subvolumes |
| # |
| 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 $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/reflink |
| |
| # real QA test starts here |
| _supported_fs btrfs |
| |
| _require_test |
| _require_scratch |
| _require_cp_reflink |
| |
| _checksum_files() |
| { |
| for f in file1 file2 file3; do |
| echo "$f:" |
| for d in $testdir1 $cross_mount_test_dir $subvol2; do |
| _md5_checksum $d/$f |
| done |
| done |
| } |
| |
| testdir1=$SCRATCH_MNT/test-$seq-1 |
| testdir2=$SCRATCH_MNT/test-$seq-2 |
| subvol1=$SCRATCH_MNT/subvol-$seq-1 |
| subvol2=$SCRATCH_MNT/subvol-$seq-2 |
| cross_mount_test_dir=$TEST_DIR/test-$seq |
| |
| rm -f $seqres.full |
| |
| _scratch_mkfs > /dev/null 2>&1 |
| _scratch_mount |
| |
| mkdir $testdir1 |
| mkdir $testdir2 |
| $BTRFS_UTIL_PROG subvolume create $subvol1 >> $seqres.full |
| $BTRFS_UTIL_PROG subvolume create $subvol2 >> $seqres.full |
| rm -rf $cross_mount_test_dir |
| mkdir $cross_mount_test_dir |
| |
| _mount -t btrfs -o subvol=subvol-$seq-1 $SCRATCH_DEV $cross_mount_test_dir |
| |
| echo "Create initial files" |
| # #testdir1/file1 is very small and will be inlined |
| $XFS_IO_PROG -f -c 'pwrite -S 0x61 0 10' $testdir1/file1 \ |
| >> $seqres.full |
| $XFS_IO_PROG -f -c 'pwrite -S 0x62 0 13000' $cross_mount_test_dir/file2 \ |
| >> $seqres.full |
| $XFS_IO_PROG -f -c 'pwrite -S 0x63 0 17000' $subvol2/file3 \ |
| >> $seqres.full |
| |
| echo "Create reflinks to the initial files on other subvolumes" |
| cp --reflink=always $testdir1/file1 $subvol1 |
| cp --reflink=always $testdir1/file1 $subvol2 |
| cp --reflink=always $subvol1/file2 $testdir1/ |
| cp --reflink=always $subvol1/file2 $subvol2 |
| cp --reflink=always $subvol2/file3 $testdir1/ |
| cp --reflink=always $subvol2/file3 $subvol1 |
| |
| echo "Verify the reflinks" |
| _verify_reflink $cross_mount_test_dir/file2 $testdir1/file2 |
| _verify_reflink $cross_mount_test_dir/file2 $subvol2/file2 |
| _verify_reflink $subvol2/file3 $testdir1/file3 |
| _verify_reflink $subvol2/file3 $cross_mount_test_dir/file3 |
| echo "Verify the file contents:" |
| _checksum_files |
| |
| echo -e "---\nOverwrite some files with new content" |
| $XFS_IO_PROG -c 'pwrite -S 0x64 0 20' $testdir1/file1 >> $seqres.full |
| $XFS_IO_PROG -c 'pwrite -S 0x66 0 21000' $subvol2/file2 >> $seqres.full |
| $XFS_IO_PROG -c 'pwrite -S 0x65 5000 5000' $cross_mount_test_dir/file3 \ |
| >> $seqres.full |
| |
| echo -n "Verify that non-overwritten reflinks " |
| echo "still have the same data blocks" |
| _verify_reflink $testdir1/file2 $cross_mount_test_dir/file2 |
| _verify_reflink $testdir1/file3 $subvol2/file3 |
| echo "Verify the file contents:" |
| _checksum_files |
| |
| echo -e "---\nShuffle files between directories" |
| mv $testdir1/file* $testdir2 |
| mv $cross_mount_test_dir/file* $testdir1/ |
| mv $subvol2/file* $cross_mount_test_dir/ |
| mv $testdir2/file* $subvol2/ |
| |
| # No _verify_reflink here as data is copied when moving files |
| # between subvols |
| echo "Verify the file contents:" |
| _checksum_files |
| |
| $UMOUNT_PROG $cross_mount_test_dir |
| |
| # success, all done |
| status=0 |
| exit |