Re: Does nilfs2 do any in-place writes?

[Vyacheslav Dubeyko <slava-yeENwD64cLxBDgjK7y7TUQ@public.gmane.org>]

On Jan 18, 2014, at 2:45 PM, Andreas Rohner wrote:

> If you are interested I could clean up my code and submit a patch set
> for review. I am sure there are lots of things, that need to be changed,
> but maybe it can give you some ideas...
> 
> It would also be possible, to improve timestamp by allowing the cleaner
> to abort if there is nothing to gain from cleaning a particular segment.
> Instead it could just updated the su_lastmod in the SUFILE without doing
> anything else. This would be a fairly simple change. I could provide a
> patch for that too.
> 

I think that it is very desirable to share patches for the review on early
stages because it is possible to achieve a valuable results by means of
open and continuos discussion. So, you are welcome to share your
vision and your patches.

As I remember, I had made many remarks about your approach and about
your code last time. So, I hope that you rework your approach significantly.

> Regards,
> Andreas Rohner
> 
> [1] https://www.dropbox.com/s/3ued8g5xaktnpbq/replay_parallel_ssd_line.pdf

To be honest, I completely misunderstand this diagram. It is hard to understand
it without additional description, from my point of view.

> [2] http://iotta.snia.org/historical_section?tracetype_id=2
> [3]
> https://www.dropbox.com/s/nwfixlzzzvf93v2/replay_parallel_stats_write.pdf

Thanks,
Vyacheslav Dubeyko.

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