On 5/13/19 10:52 AM, Max Reitz wrote: > It is possible for an empty file to take up blocks on a filesystem. > Make iotest 175 take this into account. > > Reported-by: Thomas Huth <th...@redhat.com> > Signed-off-by: Max Reitz <mre...@redhat.com> > --- > v2: [Nir] > - Use a function for filtering > - s/empty_blocks/extra_blocks/ > ---
> +# Some file systems sometimes allocate extra blocks independently of
> +# the file size. This function hides the resulting difference in the
> +# stat -c '%b' output.
> +# Parameter 1: Number of blocks an empty file occupies
> +# Parameter 2: Image size in bytes
> +_filter_blocks()
> +{
> + extra_blocks=$1
> + img_size=$2
> +
> + sed -e "s/blocks=$extra_blocks/nothing allocated/" \
> + -e "s/blocks=$((extra_blocks + img_size / 512))/everything
> allocated/"
> +}
That turned out nicely.
Reviewed-by: Eric Blake <ebl...@redhat.com>
> -size=1m
> +size=$((1 * 1024 * 1024))
Had to change since bash doesn't understand '1m' inside $(()).
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
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