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https://github.com/linux-apfs/apfstests.git
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Dave Chinner
cf89aed924
Fully scripted conversion, see script in initial SPDX license commit message. Signed-off-by: Dave Chinner <dchinner@redhat.com>
78 lines
2.0 KiB
Bash
Executable File
78 lines
2.0 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
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#
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# FS QA Test No. 176
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#
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# See how well reflink handles reflinking a file with a million extents.
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#
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seq=`basename "$0"`
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seqres="$RESULT_DIR/$seq"
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -rf "$tmp".*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/attr
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. ./common/reflink
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# real QA test starts here
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_supported_os Linux
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_require_scratch_reflink
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_require_cp_reflink
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_require_test_program "punch-alternating"
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rm -f "$seqres.full"
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echo "Format and mount"
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_scratch_mkfs > "$seqres.full" 2>&1
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_scratch_mount >> "$seqres.full" 2>&1
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testdir="$SCRATCH_MNT/test-$seq"
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mkdir "$testdir"
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# Setup for one million blocks, but we'll accept stress testing down to
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# 2^17 blocks... that should be plenty for anyone.
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fnr=20
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free_blocks=$(stat -f -c '%a' "$testdir")
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blksz=$(_get_block_size "$testdir")
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space_avail=$((free_blocks * blksz))
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calc_space() {
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blocks_needed=$(( 2 ** (fnr + 1) ))
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space_needed=$((blocks_needed * blksz * 5 / 4))
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}
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calc_space
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while test $space_needed -gt $space_avail; do
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fnr=$((fnr - 1))
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calc_space
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done
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test $fnr -lt 17 && _notrun "Insufficient space for stress test; would only create $blocks_needed extents."
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echo "Create a many-block file"
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echo "creating $blocks_needed blocks..." >> "$seqres.full"
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$XFS_IO_PROG -f -c "pwrite -S 0x61 -b 4194304 0 $((2 ** (fnr + 1) * blksz))" "$testdir/file1" >> "$seqres.full"
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echo "punching..." >> "$seqres.full"
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"$here/src/punch-alternating" "$testdir/file1" >> "$seqres.full"
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echo "...done" >> "$seqres.full"
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_scratch_cycle_mount
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echo "Reflink the big file"
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bytes=$((blocks_needed * blksz))
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echo "reflinking $((blocks_needed / 2)) blocks, $((bytes / 2)) bytes" >> "$seqres.full"
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_reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
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# success, all done
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status=0
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exit
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