Re: [PATCH] generic: test mount move semantics

[Eryu Guan <eguan@redhat.com>]

On Thu, Sep 21, 2017 at 04:24:23PM +0800, Zorro Lang wrote:
> This's a functional test case for mount --move operation, it verifies
> below semantics:
> 
>   ---------------------------------------------------------------------------
>   |         MOVE MOUNT OPERATION                                            |
>   |**************************************************************************
>   |source(A)->| shared       |       private  |       slave    | unbindable |
>   | dest(B)  |               |                |                |            |
>   |   |      |               |                |                |            |
>   |   v      |               |                |                |            |
>   |**************************************************************************
>   |  shared  | shared        |     shared     | shared & slave |  invalid   |
>   |          |               |                |                |            |
>   |non-shared| shared        |      private   |      slave     | unbindable |
>   ***************************************************************************
>   NOTE: moving a mount residing under a shared mount is invalid.
> 
> This case uses fsstress to produce a little random load, to make
> sure basic operations won't break the the moved mountpoints.
> 
> Signed-off-by: Zorro Lang <zlang@redhat.com>

Thanks for the test! As what we discussed just now, the --move semantics
test is hard to follow, please add more comments inline to describe your
test steps and purpose.

Thanks,
Eryu