[Gluster-devel] handling statfs call in USS

[Vijaikumar M]

On Wednesday 24 December 2014 02:30 PM, Raghavendra Bhat wrote:
>
> Hi,
>
> I have a doubt. In user serviceable snapshots as of now statfs call is 
> not implemented. There are 2 ways how statfs can be handled.
>
> 1) Whenever snapview-client xlator gets statfs call on a path that 
> belongs to snapshot world, it can send the
> statfs call to the main volume itself, with the path and the inode 
> being set to the root of the main volume.
>
In this approach, when statfs call is sent to main volume with path and 
inode set to the root can give incorrect value when quota and 
deem-statfs are enabled.
path/inode should be set to the parent of '.snaps'

Thanks,
Vijay

> OR
>
> 2) It can redirect the call to the snapshot world (the snapshot demon 
> which talks to all the snapshots of that particular volume) and send 
> back the reply that it has obtained.
>
> Please provide feedback.
>
> Regards,
> Raghavendra Bhat
>
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