On Wed, Nov 23, 2022 at 12:09:54PM -0700, Logan Gunthorpe wrote:
> Document the new --write-zeroes option in the manpage.
>
> Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
> Acked-by: Kinga Tanska <kinga.tanska@xxxxxxxxxxxxxxx>
Except for the typo,
Acked-by: Coly Li <colyli@xxxxxxx>
Thanks.
> ---
> mdadm.8.in | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/mdadm.8.in b/mdadm.8.in
> index 70c79d1e6e76..3beb475fd955 100644
> --- a/mdadm.8.in
> +++ b/mdadm.8.in
> @@ -837,6 +837,22 @@ array is resynced at creation. From Linux version 3.0,
> .B \-\-assume\-clean
> can be used with that command to avoid the automatic resync.
>
> +.TP
> +.BR \-\-write-zeroes
> +When creating an array, send write zeroes requests to all the block
> +devices. This should zero the data area on all disks such that the
> +initial sync is not necessary and, if successfull, will behave
> +as if
> +.B \-\-assume\-clean
> +was specified.
> +.IP
> +This is intended for use with devices that have hardware offload for
> +zeroing, but despit this zeroing can still take several minutes for
^^^^^ despite ?
> +large disks. Thus a message is printed before and after zeroing and
> +each disk is zeroed in parallel with the others.
> +.IP
> +This is only meaningful with --create.
> +
> .TP
> .BR \-\-backup\-file=
> This is needed when
> --
> 2.30.2
>
--
Coly Li
