| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2021, Jeff Layton <jlayton@redhat.com> |
| # |
| # FS QA Test No. 639 |
| # |
| # Open a file and write a little data to it. Unmount (to clean out the cache) |
| # and then mount again. Then write some data to it beyond the EOF and ensure |
| # the result is correct. |
| # |
| # Prompted by a bug in ceph_write_begin that was fixed by commit 827a746f405d. |
| # |
| . ./common/preamble |
| _begin_fstest auto quick rw |
| |
| # Import common functions. |
| . ./common/filter |
| |
| # real QA test starts here |
| _supported_fs generic |
| _require_test |
| |
| testfile="$TEST_DIR/test_write_begin.$$" |
| |
| # write some data to file and fsync it out |
| $XFS_IO_PROG -f -c "pwrite -q 0 32" $testfile |
| |
| # cycle the mount to clean out the pagecache |
| _test_cycle_mount |
| |
| # now, write to the file (near the end) |
| $XFS_IO_PROG -c "pwrite -q 32 32" $testfile |
| |
| # dump what we think is in there |
| echo "The result should be 64 bytes filled with 0xcd:" |
| hexdump -C $testfile |
| |
| status=0 |
| exit |
