cache support

[Paul B. Henson <henson@acm.org>]

> From: Brassow Jonathan
> Sent: Tuesday, February 11, 2014 9:24 AM
>
> What do you think about caching a thin pool?  Then you would get the
> benefit of caching for all of your LVs and you would get all the benefits
of
> thin and thin snapshots.

Hmm, I'm not that familiar with thin allocation in lvm. Basically, I would
allocate the entire PV as a thin LV, attach my entire cache to that, and
then create all of my production LV's with thin allocation out of the single
thin LV? Interesting thought. I have sufficient storage for at least the
midterm, my perhaps flawed understanding is that going with thin LV's
introduces an extra layer of complexity and inefficiency versus regular
allocation?