Re: [PATCH v2] generic/020: fix really long attr test failure for ceph

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On Mon, Feb 27, 2023 at 12:13:58PM +0800, xiubli@xxxxxxxxxx wrote:
> From: Xiubo Li <xiubli@xxxxxxxxxx>
> 
> If the CONFIG_CEPH_FS_SECURITY_LABEL is enabled the kernel ceph
> itself will set the security.selinux extended attribute to MDS.
> And it will also eat some space of the total size.
> 
> Fixes: https://tracker.ceph.com/issues/58742
> Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx>
> ---

LGTM
Reviewed-by Bill O'Donnell <bodonnel@xxxxxxxxxx>

> 
> V2:
> - make the 'size' and the 'selinux_size' to be local
> 
>  tests/generic/020 | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/tests/generic/020 b/tests/generic/020
> index be5cecad..538a24c6 100755
> --- a/tests/generic/020
> +++ b/tests/generic/020
> @@ -150,9 +150,11 @@ _attr_get_maxval_size()
>  		# it imposes a maximum size for the full set of xattrs
>  		# names+values, which by default is 64K.  Compute the maximum
>  		# taking into account the already existing attributes
> -		max_attrval_size=$(getfattr --dump -e hex $filename 2>/dev/null | \
> +		local size=$(getfattr --dump -e hex $filename 2>/dev/null | \
>  			awk -F "=0x" '/^user/ {len += length($1) + length($2) / 2} END {print len}')
> -		max_attrval_size=$((65536 - $max_attrval_size - $max_attrval_namelen))
> +		local selinux_size=$(getfattr -n 'security.selinux' --dump -e hex $filename 2>/dev/null | \
> +			awk -F "=0x" '/^security/ {len += length($1) + length($2) / 2} END {print len}')
> +		max_attrval_size=$((65536 - $size - $selinux_size - $max_attrval_namelen))
>  		;;
>  	*)
>  		# Assume max ~1 block of attrs
> -- 
> 2.31.1
> 




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