[sheepdog] [PATCH v3 3/3] journal: new journal flag JF_DELETE_OBJ for deleting object

[Liu Yuan]

On 05/06/2013 10:15 PM, Hitoshi Mitake wrote:
> Ah, I see. But the preallocated objects would consume disk
> space. Removing them physically would be benefitical for thin
> provisioning, I think. How do you think?

This is just the very unusual case and even if happens, only one extra
object is created, no? By the way, if we don't log the delete operation,
the 'discard command' doesn't return to the guest. So after restarting,
the guest will see the file is still there because inode isn't updated
successfully yet. Then people can re-delete the file, no?

Thanks,
Yuan