Samsung 840 Pro SSD and quirks

[Steven Hartland]

We saw a noticable performance increase on 4k on our 8TB 840
array but I too couldn't find any concrete information either.

If anyone has this info and can confirm either way that would
be great.

    Regards
    Steve

----- Original Message ----- 
From: "Borja Marcos" <borjam at sarenet.es>


>
> Hi,
>
> I have just noticed that the Samsung 840 SSDs now have the 4 KB block 
> quirk added.
>
> Is this really the case? I've been playing with them some time ago and 
> I didn't notice performance differences between using ZFS on them 
> either
> "directly" (advertised 512 byte blocks) or forcing 4 KB blocks using 
> gnop.
>
> Just surprised, I didn't find references to the true block size.