| #! /bin/bash |
| # FS QA Test No. 315 |
| # |
| # fallocate/truncate tests with FALLOC_FL_KEEP_SIZE option. |
| # Verify if the disk space is released after truncating a file back |
| # to the old smaller size. Before Linux 3.10, Btrfs/OCFS2 are test |
| # failed in this case. |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2013 Oracle, Inc. 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=0 # success is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| rm -f $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| |
| # Modify as appropriate. |
| _supported_fs generic |
| _supported_os Linux |
| _require_test |
| _require_xfs_io_command "falloc" "-k" |
| |
| rm -f $seqres.full |
| |
| echo "Slience is golden" |
| |
| # Check the current avaliable disk space on $TEST_DIR. |
| # 1024KiB at least |
| avail_begin=`df -P $TEST_DIR | awk 'END {print $4}'` |
| [ "$avail_begin" -ge 1024 ] || _notrun "Test device is too small ($avail_begin KiB)" |
| |
| # Preallocate half size of the available disk space to a file |
| # starts from offset 0 with FALLOC_FL_KEEP_SIZE option on the |
| # test file system. |
| $XFS_IO_PROG -f -c 'falloc -k 0 $(($avail_begin/2))' \ |
| $TEST_DIR/testfile.$seq >>$seqres.full 2>&1 |
| |
| # Verify the file size, it should keep unchanged as 0 in this case |
| fsize=`ls -l $TEST_DIR/testfile.$seq | awk '{print $5}'` |
| [ "$fsize" -eq 0 ] || _fail "File size is changed to ($fsize Bytes)" |
| |
| # Truncate the file size back to 0 |
| truncate -s 0 $TEST_DIR/testfile.$seq |
| sync |
| |
| # Preallocated disk space should be released |
| avail_done=`df -P $TEST_DIR | awk 'END {print $4}'` |
| _within_tolerance "df" $avail_done $avail_begin 1% |
| [ $? -eq 0 ] || _fail "Available disk space ($avail_done KiB) wanted ($avail_begin KiB)" |
| |
| # success, all done |
| exit |