| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2016 Oracle, Inc. All Rights Reserved. |
| # |
| # FS QA Test No. 358 |
| # |
| # Share an extent amongst a bunch of files such that the refcount |
| # stays the same while the rate of change of the set of owners is |
| # steadily increasing. For example, an extent of 32 blocks is owned |
| # by 32 files. At block 1, change one of the owners. At block 2, |
| # change 2 of the owners, and so on. |
| # |
| . ./common/preamble |
| _begin_fstest auto quick clone |
| |
| _register_cleanup "_cleanup" BUS |
| |
| # Override the default cleanup function. |
| _cleanup() |
| { |
| cd / |
| rm -rf $tmp.* |
| wait |
| } |
| |
| # Import common functions. |
| . ./common/filter |
| . ./common/reflink |
| |
| # real QA test starts here |
| _require_scratch_reflink |
| |
| echo "Format and mount" |
| _scratch_mkfs > $seqres.full 2>&1 |
| _scratch_mount >> $seqres.full 2>&1 |
| |
| testdir=$SCRATCH_MNT/test-$seq |
| mkdir $testdir |
| |
| blocks=64 |
| blksz=65536 |
| |
| echo "Initialize file" |
| _pwrite_byte 0x61 0 $((blocks * blksz)) $testdir/file >> $seqres.full |
| |
| echo "Share the file n-ways" |
| seq 1 $((blocks - 1)) | while read nr; do |
| _reflink_range $testdir/file 0 $testdir/file$nr.0 0 $((nr * blksz)) >> $seqres.full |
| seq $nr $((blocks - 1)) | while read nnr; do |
| _reflink_range $testdir/file $((nnr * blksz)) $testdir/file$nr.$nnr $((nnr * blksz)) $blksz >> $seqres.full |
| done |
| done |
| _scratch_cycle_mount |
| |
| echo "Check output" |
| md5sum $testdir/file $testdir/file*.0 | _filter_scratch |
| |
| # success, all done |
| status=0 |
| exit |