On 3/19/13 11:21 AM, Jan Kara wrote:
> Test 289 ignored the fact that historically journal is not accounted as
> fs overhead. For larger filesystems it is hidden in 1% tolerance but for
> filesystems smaller than 12G the test fails. So make the counting
> precise to work everywhere.
Thanks.
0875a2b448fcaba67010850cf9649293a5ef653d ext4: include journal blocks in df overhead calcs
changed this again, right - so will this change work in both cases?
Also: is using "Journal length: " any simpler?
Although I do like the new filter ;)
-Eric
> Signed-off-by: Jan Kara <jack@xxxxxxx>
> ---
> 289 | 12 ++++++++----
> common.filter | 15 +++++++++++++++
> 2 files changed, 23 insertions(+), 4 deletions(-)
>
> diff --git a/289 b/289
> index b057c20..9bba144 100755
> --- a/289
> +++ b/289
> @@ -59,10 +59,14 @@ TOTAL_BLOCKS=`dumpe2fs -h $SCRATCH_DEV 2>/dev/null \
> FREE_BLOCKS=`dumpe2fs -h $SCRATCH_DEV 2>/dev/null \
> | awk '/Free blocks:/{print $3}'`
>
> -# nb: kernels today don't count journal blocks as overhead, but should.
> -# For most filesystems this will still be within tolerance.
> -# Overhead is all the blocks (already) used by the fs itself:
> -OVERHEAD=$(($TOTAL_BLOCKS-$FREE_BLOCKS))
> +JOURNAL_SIZE=`dumpe2fs -h $SCRATCH_DEV 2>/dev/null \
> + | awk '/Journal size:/{print $3}' | _filter_size_to_bytes`
> +BLOCK_SIZE=`dumpe2fs -h $SCRATCH_DEV 2>/dev/null \
> + | awk '/Block size:/{print $3}'`
> +JOURNAL_BLOCKS=$(($JOURNAL_SIZE/$BLOCK_SIZE))
> +
> +# kernels today don't count journal blocks as overhead, but should.
> +OVERHEAD=$(($TOTAL_BLOCKS-$FREE_BLOCKS-$JOURNAL_BLOCKS))
>
> # bsddf|minixdf
> # Set the behaviour for the statfs system call. The minixdf
> diff --git a/common.filter b/common.filter
> index f0f6076..fcd7589 100644
> --- a/common.filter
> +++ b/common.filter
> @@ -229,5 +229,20 @@ _filter_spaces()
> sed -e 's/ [ ]*/ /g'
> }
>
> +# Convert string read from stdin like 128K to bytes and print it to stdout
> +_filter_size_to_bytes()
> +{
> + read size
> + suffix=${size:${#size}-1}
> + mul=1
> + case $suffix in
> + K) mul=1024 ;;
> + M) mul=$((1024*1024)) ;;
> + G) mul=$((1024*1024*1024)) ;;
> + T) mul=$((1024*1024*1024*1024)) ;;
> + esac
> + echo $((${size:0:${#size}-1}*$mul))
> +}
> +
> # make sure this script returns success
> /bin/true
>
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