[OpenIndiana-discuss] HDD Upgrade problem

[Richard Elling]

On Jun 11, 2012, at 6:08 PM, Bob Friesenhahn wrote:

> On Mon, 11 Jun 2012, Jim Klimov wrote:
>> ashift=12 (2^12 = 4096). For disks which do not lie, it
>> works properly out of the box. The patched zpool binary
>> forced ashift=12 at the user's discretion.
> 
> It seems like new pools should provide the option to be created with ashift=12 even if none of the original disks need it.  The reason is to allow adding 4K sector disks later.

I don't disagree, in principle. However, history has shown that people don't plan very well
(eg, reason #1 dedup exists). Is there some other way to be more clever?
 -- richard

-- 

ZFS storage and performance consulting at http://www.RichardElling.com