Re: [PATCH] common/rc: use $FSTYP and $SCRATCH_DEV in _supports_filetype function

[Eryu Guan <eguan@redhat.com>]

On Mon, Jan 16, 2017 at 02:40:19PM +0800, Xiao Yang wrote:
> generic/401 failed on RHEL6.8GA because output option is not
> supported by df.  So we use $FSTYP and $SCRATCH_DEV instead of
> df --output to fix it.
> 
> Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
> ---
>  common/rc | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/common/rc b/common/rc
> index 892c46e..90ad496 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -268,14 +268,12 @@ _supports_filetype()
>  {
>  	local dir=$1
>  
> -	local fstyp=$(df --output=fstype $dir | tail -1)
> -	case "$fstyp" in
> +	case $FSTYP in

$FSTYP can't be used directly in this function, because it's also used
to detect the fstype of upperfs of overlayfs in overlay testing, in
which case FSTYP is overlay. See _overlay_mount().

Just remove "--output=xxx" option and parse the output, e.g.

local fstyp=`$DF_PROG $dir | tail -1 | $AWK_PROG '{print $2}'`

Note that $DF_PROG is defined as "df -T -P", which prints the fstyp
field.

>  	xfs)
>  		xfs_info $dir | grep -q "ftype=1"
>  		;;
>  	ext2|ext3|ext4)
> -		tune2fs -l $(df --output=source $dir | tail -1) | \
> -		   grep -q filetype
> +		tune2fs -l $SCRATCH_DEV | grep -q filetype

Same here, $SCRATCH_DEV doesn't fit.

Thanks,
Eryu

>  		;;
>  	*)
>  		local testfile=$dir/$$.ftype
> -- 
> 1.8.3.1
> 
> 
> 
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