Re: [PATCH v8 2/7] blk-sysfs: Add 'chunk_sectors' to sysfs attributes

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Damien Le Moal <damien.lemoal@xxxxxxx> writes:

> diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block
> index 75a5055..ee2d5cd 100644
> --- a/Documentation/ABI/testing/sysfs-block
> +++ b/Documentation/ABI/testing/sysfs-block
> @@ -251,3 +251,16 @@ Description:
>  		since drive-managed zoned block devices do not support
>  		zone commands, they will be treated as regular block
>  		devices and zoned will report "none".
> +
> +What:		/sys/block/<disk>/queue/chunk_sectors
> +Date:		September 2016
> +Contact:	Hannes Reinecke <hare@xxxxxxxx>
> +Description:
> +		chunk_sectors has different meaning depending on the type
> +		of the disk. For a RAID device (dm-raid), chunk_sectors
> +		indicates the size in 512B sectors of the RAID volume
> +		stripe segment. For a zoned block device, either
> +		host-aware or host-managed, chunk_sectors indicates the
> +		size of 512B sectors of the zones of the device, with
                     ^^
                     in
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