Re: [PATCH 4/4] mkfs: use a sensible log sector size default

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On Fri, Jan 12, 2024 at 05:47:43AM +0100, Christoph Hellwig wrote:
> Currently the XFS log sector size defaults to the 512 bytes unless
> explicitly overriden.  Default to the device logical block size queried
> by get_topology instead.  If that is also 512 nothing changes, and if
> the device logical block size is larged this prevents a mkfs failure

                                   larger

> because the libxfs buffer cache blows up and as we obviously can't
> use a smaller than hardware supported sector size.  This fixes xfs/157
> with a 4k block size device.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
>  mkfs/xfs_mkfs.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
> index be65ccc1e..022a11a7f 100644
> --- a/mkfs/xfs_mkfs.c
> +++ b/mkfs/xfs_mkfs.c
> @@ -2075,7 +2075,8 @@ static void
>  validate_log_sectorsize(
>  	struct mkfs_params	*cfg,
>  	struct cli_params	*cli,
> -	struct mkfs_default_params *dft)
> +	struct mkfs_default_params *dft,
> +	struct fs_topology	*ft)
>  {
>  
>  	if (cli->loginternal && cli->lsectorsize &&
> @@ -2090,7 +2091,7 @@ _("Can't change sector size on internal log!\n"));
>  	else if (cli->loginternal)
>  		cfg->lsectorsize = cfg->sectorsize;
>  	else
> -		cfg->lsectorsize = dft->sectorsize;
> +		cfg->lsectorsize = ft->log.logical_sector_size;

Yessssssssss!

With the typo fixed,
Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>

--D

>  	cfg->lsectorlog = libxfs_highbit32(cfg->lsectorsize);
>  
>  	if (cfg->lsectorsize < XFS_MIN_SECTORSIZE ||
> @@ -4196,7 +4197,7 @@ main(
>  	blocksize = cfg.blocksize;
>  	sectorsize = cfg.sectorsize;
>  
> -	validate_log_sectorsize(&cfg, &cli, &dft);
> +	validate_log_sectorsize(&cfg, &cli, &dft, &ft);
>  	validate_sb_features(&cfg, &cli);
>  
>  	/*
> -- 
> 2.39.2
> 
> 




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