#! /bin/bash # SPDX-License-Identifier: GPL-2.0-or-later # Copyright (c) 2022 Oracle. All Rights Reserved. # # FS QA Test No. 724 # # Test scatter-gather atomic file writes. We create a temporary file, write # sparsely to it, then use XFS_EXCH_RANGE_FILE1_WRITTEN flag to swap # atomicallly only the ranges that we wrote. . ./common/preamble _begin_fstest auto quick fiexchange swapext # Override the default cleanup function. _cleanup() { cd / rm -r -f $tmp.* $dir } # Import common functions. . ./common/filter # real QA test starts here _require_xfs_io_command swapext '-v exchrange -a' _require_scratch _scratch_mkfs >> $seqres.full _scratch_mount _require_congruent_file_oplen $SCRATCH_MNT 65536 # Create original file _pwrite_byte 0x58 0 1m $SCRATCH_MNT/a >> $seqres.full # Create the donor file $XFS_IO_PROG -f -c 'truncate 1m' $SCRATCH_MNT/b _pwrite_byte 0x59 64k 64k $SCRATCH_MNT/b >> $seqres.full _pwrite_byte 0x57 768k 64k $SCRATCH_MNT/b >> $seqres.full md5sum $SCRATCH_MNT/a | _filter_scratch md5sum $SCRATCH_MNT/b | _filter_scratch # Test swapext. -h means skip holes in /b, and -e means operate to EOF echo swap | tee -a $seqres.full $XFS_IO_PROG -c "swapext -v exchrange -f -u -h -e -a $SCRATCH_MNT/b" $SCRATCH_MNT/a _scratch_cycle_mount md5sum $SCRATCH_MNT/a | _filter_scratch md5sum $SCRATCH_MNT/b | _filter_scratch # success, all done status=0 exit