| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # |
| # FS QA Test No. 668 |
| # |
| # Ensuring that copy on write in direct-io mode works when the CoW |
| # range originally covers multiple extents, mixed with reflinked, unwritten, |
| # hole, regular and delalloc blocks. |
| # - Create a file with the following repeating sequence of blocks: |
| # 1. reflinked |
| # 2. unwritten |
| # 3. hole |
| # 4. regular block |
| # 5. delalloc |
| # - directio CoW across the halfway mark, starting with the unwritten extent. |
| # - Check that the files are now different where we say they're different. |
| # |
| . ./common/preamble |
| _begin_fstest auto quick clone punch |
| |
| # Import common functions. |
| . ./common/filter |
| . ./common/reflink |
| |
| # real QA test starts here |
| _require_scratch_reflink |
| _require_scratch_delalloc |
| _require_xfs_io_command "falloc" |
| _require_xfs_io_command "fpunch" |
| _require_odirect |
| |
| echo "Format and mount" |
| _scratch_mkfs > $seqres.full 2>&1 |
| _scratch_mount >> $seqres.full 2>&1 |
| |
| testdir=$SCRATCH_MNT/test-$seq |
| mkdir $testdir |
| |
| echo "Create the original files" |
| blksz=65536 |
| nr=64 |
| filesize=$((blksz * nr)) |
| _sweave_reflink_rainbow $blksz $nr $testdir/file1 $testdir/file3 >> $seqres.full |
| _scratch_cycle_mount |
| |
| echo "Compare files" |
| md5sum $testdir/file1 | _filter_scratch |
| md5sum $testdir/file3 | _filter_scratch |
| md5sum $testdir/file1.chk | _filter_scratch |
| |
| echo "directio CoW across the transition" |
| cowoff=$((filesize / 4)) |
| cowsz=$((filesize / 2)) |
| _sweave_reflink_rainbow_delalloc $blksz $nr $testdir/file1 >> $seqres.full |
| # now cow |
| $XFS_IO_PROG -d -f -c "pwrite -S 0x63 -b $cowsz $cowoff $cowsz" $testdir/file1 >> $seqres.full |
| _pwrite_byte 0x63 $cowoff $cowsz $testdir/file1.chk >> $seqres.full |
| _scratch_cycle_mount |
| |
| echo "Compare files" |
| md5sum $testdir/file1 | _filter_scratch |
| md5sum $testdir/file3 | _filter_scratch |
| md5sum $testdir/file1.chk | _filter_scratch |
| |
| # success, all done |
| status=0 |
