Server with 3TB Crashing at boot

[Konstantin Belousov]

On Sat, Mar 14, 2015 at 12:04:28PM +0000, Steven Hartland wrote:
> On 14/03/2015 11:57, Konstantin Belousov wrote:
> > On Sat, Mar 14, 2015 at 11:43:49AM +0000, Steven Hartland wrote:
> >> Thats failing in bus_dmamem_alloc so as a guess I'd say there's no space
> >> below the 4GB boundary for the allocation of size qsize.
> > If this is indeed the case, laoder tunable hw.dmar.enable=1 could help.
> > I assume that machine of this class does have VT-d hardware, you might
> > need to enable it in BIOS.
> I don't see that sysctl on my 10.1 boxes, is that something only in 
> stable / current?

This is tunable, it should work in 10.1, but stable/10 and head has some
worthy fixes.