| #! /bin/bash |
| # FS QA Test No. 274 |
| # |
| # preallocation test: |
| # Preallocate space to a file, and fill the rest of the fs to 100%. |
| # Then test a write into that preallocated space, which should succeed. |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2011-2012 Fujitsu, 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 |
| # |
| #----------------------------------------------------------------------- |
| # |
| #creator |
| |
| 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.* |
| _scratch_unmount |
| } |
| |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| _supported_fs generic |
| _supported_os Linux |
| _require_scratch |
| _require_xfs_io_command "falloc" "-k" |
| |
| echo "------------------------------" |
| echo "preallocation test" |
| echo "------------------------------" |
| |
| rm -f $seqres.full |
| |
| _scratch_unmount 2>/dev/null |
| _scratch_mkfs_sized $((2 * 1024 * 1024 * 1024)) >>$seqres.full 2>&1 |
| _scratch_mount |
| |
| # Create a 4k file and Allocate 4M past EOF on that file |
| $XFS_IO_PROG -f -c "pwrite 0 4k" -c "falloc -k 4k 4m" $SCRATCH_MNT/test \ |
| >>$seqres.full 2>&1 || _fail "failed to create test file" |
| |
| # Fill the rest of the fs completely |
| # Note, this will show ENOSPC errors in $seqres.full, that's ok. |
| echo "Fill fs with 1M IOs; ENOSPC expected" >> $seqres.full |
| dd if=/dev/zero of=$SCRATCH_MNT/tmp1 bs=1M >>$seqres.full 2>&1 |
| echo "Fill fs with 4K IOs; ENOSPC expected" >> $seqres.full |
| dd if=/dev/zero of=$SCRATCH_MNT/tmp2 bs=4K >>$seqres.full 2>&1 |
| sync |
| # Last effort, use O_SYNC |
| echo "Fill fs with 4K DIOs; ENOSPC expected" >> $seqres.full |
| dd if=/dev/zero of=$SCRATCH_MNT/tmp3 bs=4K oflag=sync >>$seqres.full 2>&1 |
| # Save space usage info |
| echo "Post-fill space:" >> $seqres.full |
| df $SCRATCH_MNT >>$seqres.full 2>&1 |
| |
| # Now attempt a write into all of the preallocated space - |
| # in a very nasty way, badly fragmenting it and then filling it in. |
| echo "Fill in prealloc space; fragment at offsets:" >> $seqres.full |
| for i in `seq 1 2 1023`; do |
| echo -n "$i " >> $seqres.full |
| dd if=/dev/zero of=$SCRATCH_MNT/test seek=$i bs=4K count=1 conv=notrunc \ |
| >>$seqres.full 2>/dev/null || _fail "failed to write to test file" |
| done |
| sync |
| echo >> $seqres.full |
| echo "Fill in prealloc space; fill holes at offsets:" >> $seqres.full |
| for i in `seq 2 2 1023`; do |
| echo -n "$i " >> $seqres.full |
| dd if=/dev/zero of=$SCRATCH_MNT/test seek=$i bs=4K count=1 conv=notrunc \ |
| >>$seqres.full 2>/dev/null || _fail "failed to fill test file" |
| done |
| sync |
| echo >> $seqres.full |
| |
| echo "done" |
| exit |