Re: Which version of nilfs do you use?

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

On Fri, 2012-12-28 at 11:58 +0900, ARAI Shun-ichi wrote:
> In <BB9A0F28-A902-4FE4-BA58-A66EA93290F8-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>;
>    Elmer Zhang <freeboy6716-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote
>    as Subject "Re: Which version of nilfs do you use?":
> 
> > There is more than 2TB of data and a large number of databases, tables in our MySQL service. The conventional cold backup methods can not meet our needs. So we are trying to find some other methods.
> 
> I posted report mail about the "bad btree node" error in 2012-11-30,
> I told about VirtualBox.
> When I met the error first, virtual disk file (approx. 16GB) was in
> NILFS FS.
> 
> Zhang's DB is large. Perhaps there are files which has large size, I think.
> And these files are updated frequently.
> 
> Can the common point (file size, update) cause inconsistency?

I think that it can be a synchronization issue. But it needs to
investigate the situation more deeply. As I can see, it is using 8 CPUs
in the case of the issue and it takes place frequent update. So, it can
be a ground for good issue reproducibility, from my point of view.

With the best regards,
Vyacheslav Dubeyko.

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