[Samba] Does samba support fsync() a directory?

[曹树烽]

Hi, Johannes:

> So whatever you do, it's probably best to assume that the fsync() operation on
> your dir fd is going to fail, and route around that (potential) failure as
> best as you can.

Thanks very much for this information.
Is this documented? So that I can report this to my boss. I googled this for sort of time.


Thanks again!

Best Regards
Cao


在 2018年02月02日 20:59, Johannes Truschnigg 写道:
> Hi!
>
> Afair, fsync()ing a directory is subject to platform-specific and
> implementation-defined behaviour, and may either
>
>   - work as you'd want and (probably) expect
>   - fail with an error
>   - fail silently
>
> at least if your application targets more than one operating system/kernel -
> and even on one and the same platform, different filesystems might exhibit
> sublty different patterns of behaviour.
>
> So whatever you do, it's probably best to assume that the fsync() operation on
> your dir fd is going to fail, and route around that (potential) failure as
> best as you can.
>
> It still can be beneficial to try fsync()ing to try as hard as possibe to get
> operations against the directory as consistent as possible in face of a
> potential crash.
>
> Hth!
>