lkml.org 
[lkml]   [2022]   [May]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [dm-devel] [PATCH v4 00/13] support non power of 2 zoned devices
Date
On 20/05/2022 08:27, Javier González wrote:
> So you are suggesting adding support for !PO2 in the block layer and
> then a dm to present the device as a PO2 to the FS? This at least
> addresses the hole issue for raw zoned block devices, so it can be a
> first step.
>
> This said, it seems to me that the changes to the FS are not being a
> real issue. In fact, we are exposing some bugs while we generalize the
> zone size support.
>
> Could you point out what the challenges in btrfs are in the current
> patches, that it makes sense to add an extra dm layer?

I personally don't like the padding we need to do for the super block.

As I've pointed out to Pankaj already, I don't think it is 100% powerfail
safe as of now. It could probably be made, but that would also involve
changing non-zoned btrfs code which we try to avoid as much as we can.

As Damien already said, we still have issues with the general zoned
support in btrfs, just have a look at the list of open issues [1] we
have.

[1] https://github.com/naota/linux/issues/

\
 
 \ /
  Last update: 2022-05-20 11:32    [W:0.109 / U:0.724 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site