Re: [PATCH] kernfs: support kernfs notify in memory recliam context

[junxiao . bi]

On 11/15/23 7:30 AM, Mariusz Tkaczyk wrote:

> On Tue, 14 Nov 2023 15:53:47 -0800
> junxiao.bi@xxxxxxxxxx wrote:
>
> > Understood, thanks. Sound like depending on Userspace on memory reclaim
> > path is really bad idea and the only option for fixing it is to remove
> > that dependency, but i am not sure that is possible without breaking the
> > consistency of metadata.
> >
> > Thanks,
> >
> > Junxiao.
> Indeed the project of external metadata management if fragile. You cares about
> IMSM here (same as me) so ideally we should implement metadata management in
> kernel- I think that IMSM deserved that after 10 years on the market. There is
> no better option, other options are just "workarounds" for the lack of metadata
> management in kernel.
Agree, sound like that's the way to proceed.
> Song, any comments here?
>
>  From the second hand, there is native raid which should just work, so maybe you
> can switch to the native raid?

Unfortunately that's is not possible, it's a production setup to use 
imsm raid.

Thanks,

Junxiao.

> Thanks,
> Mariusz