hrm.. there's not an easy way to go from a disk that's an NVMe namespace and go back to the corresponding controller device, is there?

aside from iterating all of the nvme controllers and enumerate all the namespaces and cache the results

jbk: That's basically what I did recently: gist.github.com/jclulow/ff8a4c8e256258e7f0ffbe2027479841

hrm.. actually.. could you use libdevinfo and just look at the name of parent node of each blkdev device....

i think that's kinda what you're doing (with some additional considerations for your hw) if i'm reading that correctly.. but just using /devices

got to figure out what will be the least painful in go (unfortunately.. it's such an ill-fit for lower level stuff)

Ah yeah, in my case I actually need to know the attachment point ID

a la libcfgadm/cfgadm

as well as /devices and /dev/dsk and nvmeN

rmustacc: you started work on an ice (intel 810) driver, right?

That sounds accurate

it looks like a number of newer servers now come with those built-in, so might be looking to pick up that work (if no one else does)...

from the datasheet, it seems fairly similar to i40e (complete with it's annoying DMA limitations for LSO)

just with rdma support now

oh, Intel has a new product called Intel 810, I guess it has been 25 years since they shipped Intel 810 graphics

yeah, it's another NIC