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RE: [PATCH] xfststests 220: test for prealloc/delalloc/reserved spacerec

To: "Eric Sandeen" <sandeen@xxxxxxxxxx>
Subject: RE: [PATCH] xfststests 220: test for prealloc/delalloc/reserved spacerecapture
From: "Alex Elder" <aelder@xxxxxxx>
Date: Mon, 2 Nov 2009 13:01:05 -0600
Cc: "ext4 development" <linux-ext4@xxxxxxxxxxxxxxx>, "xfs-oss" <xfs@xxxxxxxxxxx>
In-reply-to: <4AC4FC13.3050505@xxxxxxxxxx>
Thread-index: AcpCysh2YvuJTV0uSryK+4+GQVJ71QZI7fcQ
Thread-topic: [PATCH] xfststests 220: test for prealloc/delalloc/reserved spacerecapture
Eric Sandeen wrote:
> Test writing and removing a file in a loop; filesize is 64m,
> filesystem size is 256m.  Loop 16 times each for buffered and
> direct.
> 
> ext4 hits enospc after a couple loops.
> 
> Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxxx>
> ---


Dumb nit mentioned below, but otherwise looks good.
Also note that you'll need to use a different test
number now--like 221.

Reviewed-by: Alex Elder <aelder@xxxxxxx>


> (note this has the sized mkfs infra from the previous patch this week
> since that patch needed more work w.r.t. modifying existing tests)
> 
> diff --git a/common.rc b/common.rc
> index 761170d..8d0cd4e 100644
> --- a/common.rc
> +++ b/common.rc
> @@ -237,6 +237,27 @@ _scratch_mkfs_options()
>      echo $SCRATCH_OPTIONS $MKFS_OPTIONS $* $SCRATCH_DEV
>  }
> 
> +# arg 1 is size in bytes, arg 2 is (optional) blocksize
> +_scratch_mkfs_sized()
> +{
> +    fssz=$1
> +    bsz=$2
> +    [ -z "$bsz" ] && bsz=4096
> +    let blocks=$fssz/$bsz
> +
> +    case $FSTYP in
> +    xfs)
> +        _scratch_mkfs_xfs -d size=$fssz -b size=$bsz 2>&1 >>$here/$seq.full
> +    ;;
> +    ext2|ext3|ext4)
> +        /sbin/mkfs -t $FSTYP -- $MKFS_OPTIONS -b $bsz $SCRATCH_DEV $blocks 
> 2>&1>>$here/$seq.full +    ;;
> +    *)
> +    _notrun "Filesystem $FSTYP not supported in _scratch_mkfs_sized"
> +    ;;
> +    esac
> +}
> +
>  _scratch_mkfs_xfs()
>  {
>      # extra mkfs options can be added by tests
> 
> diff --git a/220 b/220
> new file mode 100755
> index 0000000..55982b7
> --- /dev/null
> +++ b/220
> @@ -0,0 +1,76 @@
> +#! /bin/sh
> +# FS QA Test No. 220
> +#
> +# Test for prealloc space leaks by rewriting the same file in a loop
> +#
> +#-----------------------------------------------------------------------
> +# Copyright (c) 2009 Eric Sandeen.  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
> +owner=sandeen@xxxxxxxxxxx
> +
> +seq=`basename $0`
> +echo "QA output created by $seq"
> +
> +here=`pwd`
> +tmp=/tmp/$$
> +status=1     # failure is the default!
> +trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15
> +
> +# get standard environment, filters and checks
> +. ./common.rc
> +
> +# real QA test starts here
> +_supported_fs generic
> +_supported_os Linux IRIX
> +_require_scratch
> +
> +# real QA test starts here

So which is it, here or above that the "real QA test starts"?

> +rm -f $seq.full
> +
> +umount $SCRATCH_DEV 2>/dev/null
> +let fssize=256*1024*1024
> +echo "--> mkfs 256m filesystem"
> +_scratch_mkfs_sized $fssize >> $seq.full 2>&1
> +_scratch_mount
> +
> +loops=16
> +
> +echo "--> $loops buffered 64m writes in a loop"
> +for I in `seq 1 $loops`; do
> +     echo -n "$I "
> +     xfs_io -F -f -c 'pwrite 0 64m' $SCRATCH_MNT/test >> $seq.full
> +     rm -f $SCRATCH_MNT/test
> +done
> +
> +echo
> +umount $SCRATCH_DEV
> +_scratch_mount
> +
> +echo "--> $loops direct 64m writes in a loop"
> +for I in `seq 1 $loops`; do
> +     echo -n "$I "
> +     xfs_io -F -f -d -c 'pwrite 0 64m' $SCRATCH_MNT/test >> $seq.full
> +     rm -f $SCRATCH_MNT/test
> +done
> +
> +echo
> +umount $SCRATCH_DEV
> +
> +status=0
> +exit
> diff --git a/220.out b/220.out
> new file mode 100644
> index 0000000..497a585
> --- /dev/null
> +++ b/220.out
> @@ -0,0 +1,6 @@
> +QA output created by 220
> +--> mkfs 256m filesystem
> +--> 16 buffered 64m writes in a loop
> +1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
> +--> 16 direct 64m writes in a loop
> +1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
> diff --git a/group b/group
> index 7cea01d..9b8a401 100644
> --- a/group
> +++ b/group
> @@ -329,3 +329,4 @@ prealloc
>  217 log metadata auto
>  218 auto fsr quick
>  219 auto quota quick
> +220 enospc auto quick
> 
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