[OpenIndiana-discuss] HDD Upgrade problem

[Rich]

On Tue, Jun 12, 2012 at 12:50 AM, Richard Elling
<richard.elling at richardelling.com> wrote:
> 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

I believe that the consensus the last time this came up was agreement
on that point, but contention over how the semantics of specifying it
should work?