Mixed ashift?

[Dustin Marquess]

AH-HA! That makes perfect sense and is entirely obvious.. why didn't I
think of that?!

Thanks again!
-Dustin

On Thu, Mar 31, 2016 at 4:06 AM, Steven Hartland <killing at multiplay.co.uk>
wrote:

> vfs.zfs.min_auto_ashift is only used when a device is added so you can set
> it add, then change.
>
>
>
> On 31/03/2016 07:15, Allan Jude wrote:
>
>> On 2016-03-31 02:13, Dustin Marquess wrote:
>>
>>> I have what I think is a pretty normal setup.. a bunch of HDDs plus 2
>>> SSDs
>>> (one ZIL, one SLOG).
>>>
>>> The HDDs are standard 512 byte sector drives.  The SSDs have 8k page
>>> sizes.
>>>
>>> In Illumos I added the SSDs to sd.conf and created the zpool and it shows
>>> the HDDs as ashift 9 and the SSDs as ashift 13, like normal:
>>>
>>> # zdb -C | grep ashift
>>>              ashift: 9
>>>              ashift: 9
>>>              ashift: 9
>>>              ashift: 9
>>>              ashift: 13
>>>
>>> The question is, how to replicate this in FreeBSD?  The old "gnop" method
>>> doesn't work anymore, and setting "vfs.zfs.min_auto_ashift=13" causes it
>>> to
>>> use 13 for the HDDs, which seems like a waste.  Is this not supported?
>>>
>>> Thanks!
>>> -Dustin
>>> _______________________________________________
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>>>
>>> gnop should work, and you'd set the ashift before you add the devices.
>> So add the hard drives with it set to 9, then set it to 13 and add the
>> SLOG
>>
>>
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