SSD becomes detached 9.2

[Warren Block]

On Sat, 23 Nov 2013, Jim Ohlstein wrote:

> The OS is installed on a 120 GB SSD with root on ZFS. There is also another 
> SSD for L2ARC and there are two 3TB SATA drives in a separate ZFS mirror 
> pool. All drives passed cursory testing with smartmontools.

...

> After this event, gpart show lists only ada1, ada2, and ada3. The boot drive 
> is ada0.
>
> The entire dmesg can be seen at http://pastebin.com/RqR8LiSb.

There was a firmware update for the Samsung EVO drives in October which 
might help: 
http://www.samsung.com/global/business/semiconductor/samsungssd/downloads.html