[OpenIndiana-discuss] The+AShift+Value+and+Advanced+Format+disks+and+ZFS

[Richard Elling]

On Jun 16, 2012, at 8:52 AM, Jim Klimov wrote:

> 2012-06-16 19:41, Hans J. Albertsson wrote:
>> are the overrides described in that wiki page available in OI151a4??
> 
>>> http://wiki.illumos.org/display/illumos/The+AShift+Value+and+Advanced+Format+disks+and+ZFS
> 
> Renamed to:
> http://wiki.illumos.org/display/illumos/ZFS+and+Advanced+Format+disks
> 
> In the course of discussion, and by further updates from Richard Elling,
> I was led to believe that the sd.conf overrides are part of the lowlevel
> illumos-gate shared by several distros, including OI.

There are two ways to set overrides:
1. compile them into the driver, which was common for Sun to do for Sun hardware
2. add them to the driver configuration files

IMHO, #2 is much easier than compiling them in, and can be done more easily by
distros. When I worked at Nexenta, I proposed fixes that did change the default
driver config files, but I do not follow Nexenta's current distributions to see if the 
fixes were integrated. In any case, your distribution might have applied changes there.
 -- richard

-- 

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