[OmniOS-discuss] Moving The Root Pool

[Andrew Gabriel]

On 14/02/2017 14:32, Jaakko Linnosaari wrote:
>
>> On 14 Feb 2017, at 16.06, Andre Kruger <andre at ak47.co.za 
>> <mailto:andre at ak47.co.za>> wrote:
>>
>> But, on many Windows forums there are warning cloning a HDD directly 
>> to an SSD, of the boot drive drive C, and then using the SSD. 
>> Apparently many users have experienced very slow performance. You can 
>> however clone from HDD to HDD or SSD to SSD without these performance 
>> problems. From there my question if anybody knows of a caveat not to 
>> do it in this way if I want to clone my rpool from HDD to SSD. If 
>> none I would rather walk this path as it is far less trouble.
>
> I think the slow (write) performance is due to too small block size 
> and write amplification.


You might want to update sd.conf with this...

https://wiki.illumos.org/display/illumos/List+of+sd-config-list+entries+for+Advanced-Format+drives

I recently added the Evo 850 to it, so it gives me an ashift 13 zpool on it.

That might stop you attaching it to an ashift 9 rpool though. I created 
a new rpool (called something else - the name doesn't matter), 
replicated the fdisk/slice structure, zfs send/recv the data across, and 
installed grub.


-- 

Andrew Gabriel

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