Re: [RFC PATCH 0/3] erofs-utils: compressed fragments feature

[Yue Hu <zbestahu@gmail.com>]

Hi Xiang,

On Mon, 11 Jul 2022 18:02:43 +0800
Gao Xiang <hsiangkao@linux.alibaba.com> wrote:

> Hi Yue,
> 
> On Mon, Jul 11, 2022 at 05:09:55PM +0800, Yue Hu wrote:
> > In order to achieve greater compression ratio, let's introduce
> > compressed fragments feature which can merge tail of per-file or the
> > whole files into one special inode to reach the target.
> > 
> > And we can also set pcluster size to fragments inode for different
> > compression requirments.
> > 
> > In this patchset, we also improve the uncompressed data layout of
> > compressed files. Just write it from 'clusterofs' instead of 0 since it
> > can benefit from in-place I/O. For now, it only goes with fragments.
> > 
> > The main idea above is from Xiang.
> >   
> 
> I just took a preliminary try and it seems work, but in order to form it
> better, I have to postpone it for the next version of 5.20 (6.0?)
> since I'm still working on cleaning up and rolling hash deduplication.

Got it.

Thanks.

> 
> Thanks,
> Gao Xiang