[OmniOS-discuss] [zfs] SSD alignment, EFI label rpool support

[Jim Klimov]

On 2013-08-01 21:39, Paul B. Henson wrote:
> On 8/1/2013 5:42 AM, Jim Klimov wrote:
>
>> What matters is that this container (slice/partition) usually does
>> not start at HDD sector 0
>
> Yes, you understood my question exactly, thanks for expanding upon it.
>
>> fresh twist regarding page size vs. erase-block size (and not yet
>> asked - a recommendation about recommended ZFS minblocksize for
>> such devices).
>
> Oh no, I'm almost done tuning my install, not more possible options to
> have to explore ;).
>
>> such precision via fdisk/format, one can use the command-line
>> "parted" to manage disk partitions, including MBR-style ones.
>
> Hmm, if I understand you correctly, you are recommending using a
> non-illumos tool to create a Solaris MBR partition aligned on an
> arbitrary sector rather than a cylinder, which would then allow the
> beginning of slice zero in that partition to be in the right place? I
> didn't think of that, that seems much simpler than trying to calculate a
> cylinder offset of the slice relative to the beginning of the partition
> that lines up.

In short - yes.

As can be seen in src.illumos.org, the GNU parted (or some derivate
thereof) is even part of the illumos-gate, so it is not a non-illumos
tool now ;)

> Thanks much…

You are welcome, and I hope this does help :)

//Jim