[OpenIndiana-discuss] help needed: reinstall bootloader

[Timothy Coalson]

On Sat, Apr 14, 2018 at 1:43 AM, Nikola M <minikola at gmail.com> wrote:

> And also there is the question weather Hard disk cache is turned on if ZFS
> uses partition and not the whole drive. Previoiusly, Hard disk caching used
> to be turned OFF if ZFS is on partition and not on the whole drive, for UFS
> compatibility.
> Don't know how it is now nor how to explicitlycheck/turn ON Hard disk
> caching if ZFS pool uses partition on drive.
>
> previously discussed several times, long ago (though somewhat difficult to
search for):

https://www.mail-archive.com/zfs-discuss@opensolaris.org/msg49099.html

ZFS never disables caches, and I believe they are almost always already
enabled anyway, so you can forget this concern.  From what I understand
from reading the list, the only reason zfs has any code that touches disk
cache settings at all is that long ago, Sun shipped some drives with the
cache disabled by default in the firmware.  I think if you aren't using old
drives shipped by Sun, this "whole disk" distinction doesn't matter to you
(as long as you don't also use UFS, anyway).

Tim