[sheepdog] [PATCH v2 1/2] sheep: introduce strict mode for write

[MORITA Kazutaka]

At Thu, 12 Dec 2013 13:45:33 +0800,
Liu Yuan wrote:
> 
> We make sure we write the exact number of copies to honor the promise of the
> redundancy for "strict mode". This means that after writing of targeted data,
> they are redundant as promised and can withstand the random node failures.
> 
> For example, with a 4:2 policy, we need at least write to 6 nodes with data
> strip and parity strips. For non-strict mode, we allow to write successfully
> only if the data are written fully with 4 nodes alive.

Sorry for being late for this discussion, but what's the aim of the
strict mode?  Is there any use case where non-strict mode is not
acceptable?

Thanks,

Kazutaka