| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (C) 2017 SUSE Linux Products GmbH. All Rights Reserved. |
| # |
| # FSQA Test No. 412 |
| # |
| # Test that if we have a file with a hole, do a mix of direct IO and buffered |
| # writes to it and truncate the file to a size that lies in the middle of the |
| # hole, after unmounting and mounting again the filesystem, the file has a |
| # correct size and no data loss happened. |
| # |
| . ./common/preamble |
| _begin_fstest auto quick metadata |
| |
| # Import common functions. |
| . ./common/filter |
| |
| _require_scratch |
| _require_odirect |
| |
| _scratch_mkfs >>$seqres.full 2>&1 |
| _scratch_mount |
| |
| # Create out test file with two extents and a hole between those extents. |
| # The extent that lies beyond the hole must be written using direct IO and later |
| # we truncate the file to a size that lies within the hole's range. |
| $XFS_IO_PROG -f -c "pwrite -S 0x01 0K 32K" $SCRATCH_MNT/foo | _filter_xfs_io |
| $XFS_IO_PROG -d -c "pwrite -S 0x02 -b 32K 64K 32K" $SCRATCH_MNT/foo \ |
| | _filter_xfs_io |
| |
| # Now truncate our file to a smaller size that lies behind the offset used by |
| # the previous direct IO write and that lies in a file hole. |
| $XFS_IO_PROG -c "truncate 60K" $SCRATCH_MNT/foo |
| |
| # Now get file digests before unmounting the filesystem and after mounting it |
| # again. The digests should match (same file data and size in both cases). |
| echo "File digest before unmounting the filesystem:" |
| md5sum $SCRATCH_MNT/foo | _filter_scratch |
| _scratch_cycle_mount |
| echo "File digest after mounting again the filesystem:" |
| md5sum $SCRATCH_MNT/foo | _filter_scratch |
| |
| status=0 |
| exit |
