Running FreeBSD on M.2 SSD

[Theron]

On 2020-02-26 22:54, Mario Olofo wrote:
> Hello Mark,
>
> Yes, I think that it's related to the WD Green SSD.
> Today I found this bug on FreeBSD's bugzilla:
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=225666
>
> Tried to reinstall and recompile the kernel with the patch but it didn't
> work, I continue to see corrupted data.
> I think that the only way to be really sure about the corrupted data is to
> reinstall again but already boot with the quirks configured, but the
> kern.cam.ada.X.quirks don't seems to exists on FreeBSD 12,
> so I have a probability of corruption between installation and compilation
> of the patched kernel...
>
> Don't know what more to do...
>
> Mario
>
Hi, please forgive my lack of experience with ZFS, but with regard to 
buggy SATA something hasn't been brought up yet:

If ZFS is sitting on top of GPT, what sectorsize and offset are used?  
What blocksize is "native" to the drive?  Are these aligned?

I recall this chance for misalignment being a cause of silent write 
corruption after installing a new SSD for Apple MacOS; maybe FreeBSD ZFS 
on SATA happens to be similarly susceptible.

Theron