On 11/09/2015 16:47, George Wilson wrote:
> The ideas was that only one pool could own it so that failover would be
> possible and the cache device would follow that pool. It also would be
> required for persistent l2arc. 
>
> However, it should be possible to create an independent l2arc which never
> fails over but can be added to multiple pools. It would not be a trivial
> implementation but seems doable.

Well, given that the cache device has just a cache of data it can easily follow
its pool by simply discarding the cached data.
Loss of a cache device is harmless even now.

-- 
Andriy Gapon
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