Some photos from a bit of 4am dev box maintenance earlier this morning, focused on hardware reallocation and consolidation to maximize PCIe lane utilization. This box will host one VM using full PCIe passthrough on the GPUs and 50% NPAR for the NIC ports, and four smaller VMs. Storage for the VMs will be host-level ZFS on the two P3608, split up as several zvol allocated to the smaller VMs
Some clarifications on some points here about the history of BTRFS as it relates to Oracle, Sun Microsystems, RedHat, ZFS, and a DARPA funded filesystem research project which concluded with a ghastly murder. > Oracle bought Sun to get the ZFS file system. They have been porting ZFS features into Btrfs. The head of the Ext4 file system project, an Oracle employee, said that Ext4 was just a temporary stepping
Some quick progress notes for a few FreeBSD and OpenZFS devs, which will be accessing one of my POWER9 systems. See photos for visual reference. * Separate L1 and L2 domain for all network access, zero-shared DMZ, unconnected to the rest of the RFC99 lab lack * Mikrotik router has been temporarily slapped into place on the side of my lab rack, directly in back of the Talos II system (dual socket,
I love a lot about the linux world, and there's a lot of positive aspects to the kernel itself, which has brought a lot of joy over the years, with kernel module development, debugging, tuning, analyzing... specifically for my career, but also on a personal level. For one quarter of a century I've been using Linux and BSDs in many different flavors, but there's
The RFC1918s are references to a set of domains which I've acquired over a number of years, specific to home-colo-startup lab architecture development. In standing with the concept of "Usage-Based Naming Convention"...
#chicago #morning #photos #stormy #sleepy
Coders from all over likely already know of this quote, or would certainly would benefit from perma-copying this quote to the front of their brain-stem/visual-cortex knowledge queue: > “Premature optimization is the root of all evil.” > ― Donald Ervin Knuth, The Art of Computer Programming, Volume 1: Fundamental Algorithms So then, what's this about Hyper-Focal in relation? It's when one builds a "maladapted neurological
These are the topics that I've been spending time with, on no specific schedule, with no intended intention, often for debugging or optimization, sometimes purely for curiosity, and often in-between other tasks throughout the day and night, so they might as well get some blog posts for discussion. All of the topics have already been written via configs, scripts, list-docs, and automation tooling, but no formal blog posts