lkml.org 
[lkml]   [2020]   [Apr]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH v2] md/raid0: add config parameters to specify zone layout
Date


> On Mar 30, 2020, at 9:00 AM, Jason Baron <jbaron@akamai.com> wrote:
>
> Let's add some CONFIG_* options to directly configure the raid0 layout
> if you know in advance how your raid0 array was created. This can be
> simpler than having to manage module or kernel command-line parameters.
>
> If the raid0 array was created by a pre-3.14 kernel, use
> RAID0_ORIG_LAYOUT. If the raid0 array was created by a 3.14 or newer
> kernel then select RAID0_ALT_MULTIZONE_LAYOUT. Otherwise, the default
> setting is RAID0_LAYOUT_NONE, in which case the current behavior of
> needing to specify a module parameter raid0.default_layout=1|2 is
> preserved.
>
> Cc: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
> Cc: NeilBrown <neilb@suse.de>
> Cc: Song Liu <songliubraving@fb.com>
> Signed-off-by: Jason Baron <jbaron@akamai.com>

This patch looks good. However, I am not sure whether the user will
recompile the kernel for a different default value. Do you have real
world use case for this?

Thanks,
Song

\
 
 \ /
  Last update: 2020-04-25 01:22    [W:2.534 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site