| #! /bin/bash |
| # FS QA Test No. 176 |
| # |
| # See how well reflink handles reflinking a file with a million extents. |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved. |
| # |
| # This program is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU General Public License as |
| # published by the Free Software Foundation. |
| # |
| # This program is distributed in the hope that it would be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write the Free Software Foundation, |
| # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| #----------------------------------------------------------------------- |
| |
| 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 / |
| rm -rf "$tmp".* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/attr |
| . ./common/reflink |
| |
| # real QA test starts here |
| _supported_os Linux |
| _require_scratch_reflink |
| _require_cp_reflink |
| _require_test_program "punch-alternating" |
| |
| rm -f "$seqres.full" |
| |
| echo "Format and mount" |
| _scratch_mkfs > "$seqres.full" 2>&1 |
| _scratch_mount >> "$seqres.full" 2>&1 |
| |
| testdir="$SCRATCH_MNT/test-$seq" |
| mkdir "$testdir" |
| |
| # Setup for one million blocks, but we'll accept stress testing down to |
| # 2^17 blocks... that should be plenty for anyone. |
| fnr=20 |
| free_blocks=$(stat -f -c '%a' "$testdir") |
| blksz=$(_get_block_size "$testdir") |
| space_avail=$((free_blocks * blksz)) |
| calc_space() { |
| blocks_needed=$(( 2 ** (fnr + 1) )) |
| space_needed=$((blocks_needed * blksz * 5 / 4)) |
| } |
| calc_space |
| while test $space_needed -gt $space_avail; do |
| fnr=$((fnr - 1)) |
| calc_space |
| done |
| test $fnr -lt 17 && _notrun "Insufficient space for stress test; would only create $blocks_needed extents." |
| |
| echo "Create a many-block file" |
| echo "creating $blocks_needed blocks..." >> "$seqres.full" |
| $XFS_IO_PROG -f -c "pwrite -S 0x61 -b 4194304 0 $((2 ** (fnr + 1) * blksz))" "$testdir/file1" >> "$seqres.full" |
| echo "punching..." >> "$seqres.full" |
| "$here/src/punch-alternating" "$testdir/file1" >> "$seqres.full" |
| echo "...done" >> "$seqres.full" |
| _scratch_cycle_mount |
| |
| echo "Reflink the big file" |
| bytes=$((blocks_needed * blksz)) |
| echo "reflinking $((blocks_needed / 2)) blocks, $((bytes / 2)) bytes" >> "$seqres.full" |
| _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full" |
| |
| # success, all done |
| status=0 |
| exit |