4 # See how well reflink handles reflinking a file with a million extents.
6 #-----------------------------------------------------------------------
7 # Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
9 # This program is free software; you can redistribute it and/or
10 # modify it under the terms of the GNU General Public License as
11 # published by the Free Software Foundation.
13 # This program is distributed in the hope that it would be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License
19 # along with this program; if not, write the Free Software Foundation,
20 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #-----------------------------------------------------------------------
24 seqres="$RESULT_DIR/$seq"
25 echo "QA output created by $seq"
29 status=1 # failure is the default!
30 trap "_cleanup; exit \$status" 0 1 2 3 15
38 # get standard environment, filters and checks
44 # real QA test starts here
46 _require_scratch_reflink
48 _require_test_program "punch-alternating"
52 echo "Format and mount"
53 _scratch_mkfs > "$seqres.full" 2>&1
54 _scratch_mount >> "$seqres.full" 2>&1
56 testdir="$SCRATCH_MNT/test-$seq"
59 # Setup for one million blocks, but we'll accept stress testing down to
60 # 2^17 blocks... that should be plenty for anyone.
62 free_blocks=$(stat -f -c '%a' "$testdir")
63 blksz=$(stat -f -c '%S' "$testdir")
64 space_avail=$((free_blocks * blksz))
66 blocks_needed=$(( 2 ** (fnr + 1) ))
67 space_needed=$((blocks_needed * blksz * 5 / 4))
70 while test $space_needed -gt $space_avail; do
74 test $fnr -lt 17 && _notrun "Insufficient space for stress test; would only create $blocks_needed extents."
76 echo "Create a many-block file"
77 echo "creating $blocks_needed blocks..." >> "$seqres.full"
78 "$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b 4194304 0 $((2 ** (fnr + 1) * blksz))" "$testdir/file1" >> "$seqres.full"
79 echo "punching..." >> "$seqres.full"
80 "$here/src/punch-alternating" "$testdir/file1" >> "$seqres.full"
81 echo "...done" >> "$seqres.full"
84 echo "Reflink the big file"
85 bytes=$((blocks_needed * blksz))
86 echo "reflinking $((blocks_needed / 2)) blocks, $((bytes / 2)) bytes" >> "$seqres.full"
87 _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"