| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2016 Fujitsu. All Rights Reserved. |
| # |
| # FS QA Test 353 |
| # |
| # Check if fiemap ioctl returns correct SHARED flag on reflinked file |
| # before and after sync the fs |
| # |
| # Btrfs has a bug in checking shared extent, which can only handle metadata |
| # already committed to disk, but not delayed extent tree modification. |
| # This caused SHARED flag only occurs after sync. |
| # |
| . ./common/preamble |
| _begin_fstest auto quick clone fiemap |
| |
| # Import common functions. |
| . ./common/filter |
| . ./common/reflink |
| . ./common/punch |
| |
| |
| # Modify as appropriate. |
| _require_scratch_reflink |
| _require_xfs_io_command "fiemap" |
| |
| _scratch_mkfs > /dev/null 2>&1 |
| _scratch_mount |
| |
| blocksize=$(_get_file_block_size $SCRATCH_MNT) |
| |
| file1="$SCRATCH_MNT/file1" |
| file2="$SCRATCH_MNT/file2" |
| extmap1="$SCRATCH_MNT/extmap1" |
| extmap2="$SCRATCH_MNT/extmap2" |
| |
| # write the initial file |
| _pwrite_byte 0xcdcdcdcd 0 $blocksize $file1 > /dev/null |
| |
| # reflink initial file |
| _reflink_range $file1 0 $file2 0 $blocksize > /dev/null |
| |
| # check their fiemap to make sure it's correct |
| $XFS_IO_PROG -c "fiemap -v" $file1 | _filter_fiemap_flags > $extmap1 |
| $XFS_IO_PROG -c "fiemap -v" $file2 | _filter_fiemap_flags > $extmap2 |
| |
| cmp -s $extmap1 $extmap2 || echo "mismatched extent maps before sync" |
| |
| # sync and recheck, to make sure the fiemap doesn't change just |
| # due to sync |
| _scratch_sync |
| $XFS_IO_PROG -c "fiemap -v" $file1 | _filter_fiemap_flags > $extmap1 |
| $XFS_IO_PROG -c "fiemap -v" $file2 | _filter_fiemap_flags > $extmap2 |
| |
| cmp -s $extmap1 $extmap2 || echo "mismatched extent maps after sync" |
| |
| echo "Silence is golden" |
| |
| # success, all done |
| status=0 |
| exit |
