Re: [PATCH V2] ovl: Allocate anonymous devs for lowerdirs

[Amir Goldstein <amir73il@gmail.com>]

On Fri, Jun 23, 2017 at 2:01 PM, Chandan Rajendra
<chandan@linux.vnet.ibm.com> wrote:
> For stat(2) on lowerdir non-dir entries in non-samefs case, this commit
> provides unique values for st_dev. The unique values are obtained by
> allocating anonymous bdevs for each of the lowerdirs in the overlayfs
> instance.
>
> Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
> ---

Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Tested-by: Amir Goldstein <amir73il@gmail.com>

Miklos,

I re-created the branch ovl-constino [1] on top of ovl-hardlinks and without
the consistent dino patches.

Applied Chandan's patch and resolved conflicts with my patches.
Then, applied my patch to relax constant st_ino  for non-samefs on stat(2).

Mutilated unionmount-testsuite layers check [2] to get over the unexpected
pseudo dev and now tests pass for non samefs including constant ino
verification and persistent ino verification for non-dir.

Chandan,

If you can fix the mutilated unionmount-testsuite check_layer(), that would be
nice.

Thanks,
Amir.

[1] https://github.com/amir73il/linux/commits/ovl-constino
[2] https://github.com/amir73il/unionmount-testsuite/commits/ovl-constino