RFC: Suggesting ZFS "best practices" in FreeBSD

[Borja Marcos]

On Feb 26, 2013, at 9:42 PM, John wrote:

>   And of course, if you look through the source, you'll see where ZFS
> makes a distinction between slices & whole disks. I have not debugged
> through it recently to see how much of it is currently in use.
> 
>   If you use dual-channel SAS drives with geom multipath, you need to be
> clear whether your meta-data on disk from the different geoms collide... 
> 
>   Regardless of how the best practices is put together, make sure
> folks are aware of the limitations/caveats of the different choices.

Exactly. Anyway, as far as I know, both FreeBSD and Solaris should be able to work with GPT slices instead of
whole disks. 

In the past at least (and, despite the lore one can read here and there) Solaris refused to use the disks cache if the vdevs
were made of slices instead of whole disks, but maybe it has changed in the past. As far as I know, however, FreeBSD doesn't show
that behavior.




Borja.