Stasiz

Update firmware WD Black SN770 firmware on Arch Linux

Been having problems with my new SN770 drive, and decided to check if I can firmware update it on Linux. WD only provides a Windows tool, Western Digital Dashboard to download and install firmwares, but, it's possible to find the firmware and install it using Linux tooling as well.

1. Check that `nvme-cli` is installed:

❱ sudo pacman -S nvme-cli

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HP Smart Storage Admin CLI (`ssacli`) installation and usage on Proxmox PVE (6.x)

Why use HP Smart Storage Admin CLI?

You can use ssacli (smart storage administrator command line interface) tool to manage any of supported HP Smart Array Controllers in your Proxmox host without need to reboot your server to access Smart Storage Administrator in BIOS. That means no host downtime when managing your storage.

CLI is not as convenient as GUI interface provided by BIOS or desktop utilities, but still allows you to fully manage your controller, physical disks and logical drives on the fly with no Proxmox host downtime.

ssacli replaces older hpssacli, but shares the same syntax and adds support for newer servers and controllers.

Installation

About

I faced bandwidth issues between a WG Peer and a WG server. Download bandwidth when downloading from WG Server to WG peer was reduced significantly and upload bandwidth was practically non existent.
I found a few reddit posts that said that we need to choose the right MTU. So I wrote a script to find an optimal MTU.
Ideally I would have liked to have run all possible MTU configurations for both WG Server and WG Peer but for simplicity I choose to fix the WG Server to the original 1420 MTU and tried all MTUs from 1280 to 1500 for the WG Peer.

Testing

On WG server, I started an iperf3 server
On WG peer, I wrote a script that does the following:
- wg-quick down wg0
Edit MTU in the /etc/wireguard/wg0.conf file

	#!/bin/bash

	##
	# Name: GeoIP Firewall script
	# Author: Pandry
	# Version: 0.1.1
	# Description: This is a simple script that will set up a GeoIP firewall blocking all the zones excecpt the specified ones
	# it is possible to add the whitelisted zones @ line 47
	# Additional notes: Usage of [iprange](https://github.com/firehol/iprange) is suggested
	# for best performances

	Use this as an example on how to start the virtual console without the need of Java Web Start or accessing it from the web interface.
	You can use the user and password that you use for the web interface.

	You need an old JRE... I used 1.7.0_80 from the Server JRE package, also I have tested successfully 1.7.0_79 with MacOS.
	You don't need to install it, just extract it or copy the files in "jre" folder.

	Open the viewer.jnlp file that you get by launching the virtual console from the web interface with a text editor.
	Note the urls to the jar files. Download the main jar file avctKVM.jar and the libs for your operating system and architecture.
	Extract the dlls (.so Linux, .jnilib MacOS) from the jar libs.

	#!/bin/local/bash
	# cfan.sh
	# Manaual control over fans in PfSense (FreeBSD) on a Dell PowerEdge R210 ii system
	# Original script: https://www.garron.me/en/bits/specify-editor-crontab-file.html
	# Install:
	# sudo pkg install bash && sudo pkg install ipmitool
	# Add ipmi_load="YES" to /boot/loader.conf
	# Add this script to /usr/bin/
	# Add * * * * * /usr/local/bin/bash /usr/bin/cfan.sh to cron file with sudo crontab -e
	# Reboot