Re: [PATCH] mkfs: fix -l su minval

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On 6/6/16 2:55 AM, Jan Tulak wrote:
> -l su should be in range BBTOB(1) <= L_SU <= XLOG_MAX_RECORD_BSIZE, because the
> upper limit is imposed by kernel on iclogbuf: stripe unit can't be bigger than
> the log buffer, but the log buffer can span multiple stripe units. L_SUNIT is
> changed in the same way.
> 
> Signed-off-by: Jan Tulak <jtulak@xxxxxxxxxx>

Manpage could use documentation on defaults, min, and max I suppose.

But for this code change:

Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>

Thanks for digging into it :)

> ---
>  mkfs/xfs_mkfs.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
> index 955dcfd..ed7800f 100644
> --- a/mkfs/xfs_mkfs.c
> +++ b/mkfs/xfs_mkfs.c
> @@ -462,7 +462,7 @@ struct opt_params lopts = {
>  		{ .index = L_SUNIT,
>  		  .conflicts = { L_SU,
>  				 LAST_CONFLICT },
> -		  .minval = BTOBB(XLOG_MIN_RECORD_BSIZE),
> +		  .minval = 1,
>  		  .maxval = BTOBB(XLOG_MAX_RECORD_BSIZE),
>  		  .defaultval = SUBOPT_NEEDS_VAL,
>  		},
> @@ -470,7 +470,7 @@ struct opt_params lopts = {
>  		  .conflicts = { L_SUNIT,
>  				 LAST_CONFLICT },
>  		  .convert = true,
> -		  .minval = XLOG_MIN_RECORD_BSIZE,
> +		  .minval = BBTOB(1),
>  		  .maxval = XLOG_MAX_RECORD_BSIZE,
>  		  .defaultval = SUBOPT_NEEDS_VAL,
>  		},
> 

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