| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved. |
| # |
| # FS QA Test No. 309 |
| # |
| # Ensure that we can create enough distinct reflink entries to force creation |
| # of a multi-level refcount btree by reflinking a file a number of times and |
| # truncating the copies at successively lower sizes. Delete and recreate a few |
| # times to exercise the refcount btree grow/shrink functions. |
| # |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| _scratch_unmount > /dev/null 2>&1 |
| rm -rf $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/reflink |
| |
| # real QA test starts here |
| _supported_fs xfs |
| _require_scratch_reflink |
| _require_cp_reflink |
| |
| rm -f $seqres.full |
| |
| _scratch_mkfs >/dev/null 2>&1 |
| _scratch_mount |
| |
| testdir=$SCRATCH_MNT/test-$seq |
| mkdir $testdir |
| |
| echo "Create the original file blocks" |
| blksz="$(_get_block_size $testdir)" |
| nr_blks=$((2 * blksz / 12)) |
| |
| for i in 1 2 x; do |
| _pwrite_byte 0x61 0 $((blksz * nr_blks)) $testdir/file1 >> $seqres.full |
| |
| echo "$i: Reflink a bunch of times" |
| seq 1 $nr_blks | while read nr; do |
| _cp_reflink $testdir/file1 $testdir/file1.$nr >> $seqres.full |
| done |
| sync |
| |
| echo "$i: Truncate files" |
| seq 1 $nr_blks | while read nr; do |
| truncate -s $((blksz * (nr_blks - nr))) $testdir/file1.$nr >> $seqres.full |
| done |
| |
| _scratch_unmount |
| _check_scratch_fs |
| _scratch_mount |
| |
| test $i = "x" && break |
| |
| echo "$i: Delete both files" |
| rm -rf $testdir |
| mkdir -p $testdir |
| _scratch_unmount |
| _check_scratch_fs |
| _scratch_mount |
| done |
| |
| # success, all done |
| status=0 |
| exit |