| #! /bin/bash |
| # FS QA Test No. 275 |
| # |
| # The posix write test. When write size is larger than disk free size, |
| # should write as much as possible until ENOSPC. |
| # |
| #----------------------------------------------------------------------- |
| # 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=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| _scratch_unmount |
| } |
| |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| _supported_fs generic |
| _supported_os Linux |
| _require_scratch |
| |
| echo "------------------------------" |
| echo "write until ENOSPC test" |
| echo "------------------------------" |
| |
| rm -f $seqres.full |
| |
| _scratch_unmount 2>/dev/null |
| _scratch_mkfs_sized $((2 * 1024 * 1024 * 1024)) >>$seqres.full 2>&1 |
| _scratch_mount |
| |
| # this file will get removed to create 256k of free space after ENOSPC |
| # conditions are created. |
| dd if=/dev/zero of=$SCRATCH_MNT/tmp1 bs=256K count=1 >>$seqres.full 2>&1 |
| [ $? -ne 0 ] && _fail "Error creating file" |
| |
| # Attempt to completely fill fs |
| dd if=/dev/zero of=$SCRATCH_MNT/tmp2 bs=1M >>$seqres.full 2>&1 |
| sync |
| dd if=/dev/zero of=$SCRATCH_MNT/tmp3 bs=4K >>$seqres.full 2>&1 |
| sync |
| # Last effort, use O_SYNC |
| dd if=/dev/zero of=$SCRATCH_MNT/tmp4 bs=4K oflag=sync >>$seqres.full 2>&1 |
| # Save space usage info to the full file |
| echo "Pre rm space:" >> $seqres.full |
| $DF_PROG $SCRATCH_MNT >>$seqres.full 2>&1 |
| |
| # Should leave approx 256k free |
| rm -f $SCRATCH_MNT/tmp1 |
| sync |
| echo "Post rm space:" >> $seqres.full |
| $DF_PROG $SCRATCH_MNT >>$seqres.full 2>&1 |
| _freespace=`$DF_PROG -k $SCRATCH_MNT | tail -n 1 | awk '{print $5}'` |
| [ $_freespace -gt 1024 ] && _fail "could not sufficiently fill filesystem" |
| |
| # Try to write more than available space in chunks that will allow at least one |
| # full write to succeed. |
| dd if=/dev/zero of=$SCRATCH_MNT/tmp1 bs=128k count=8 >>$seqres.full 2>&1 |
| echo "Bytes written until ENOSPC:" >>$seqres.full |
| du $SCRATCH_MNT/tmp1 >>$seqres.full |
| |
| # And at least some of it should succeed. |
| _filesize=`ls -l $SCRATCH_MNT/tmp1 | awk '{print $5}'` |
| [ $_filesize -lt $((128 * 1024)) ] && \ |
| _fail "Partial write until enospc failed; wrote $_filesize bytes." |
| |
| echo "done" |
| status=0 |
| exit |