[sheepdog] [PATCH 3/4] sheep: handle block/unblock/notify error

[Kai Zhang]

On Jul 6, 2013, at 10:19 AM, Liu Yuan <namei.unix at gmail.com> wrote:

> You should explain why we need to handle broadcast event failure. Sheep assume
> they never fail.

Currently, sheep assume they never fail.

But actually, they may probably fail and sheep just ignore it.

I think we should not ignore it.

For example, for a block operation, if sheep failed to 'BLOCK' it, the following 'UNBLOCK' will
unblock an improper event.

Thanks,
Kyle
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