petergloor

In order to avoid performance issues for other operations (e.g. upgrades or backups) slow down raid 1 synch by lowering its max speed to zero. This might especially be useful after a fresh install when the system performs slow for a few hours, but still some final work needs to be done (e.g. create user accounts and software installation/configuration).

First check the current value of /proc/sys/dev/raid/speed_limit_max:

# cat /proc/sys/dev/raid/speed_limit_max
200000

Next, set /proc/sys/dev/raid/speed_limit_max to 0:

echo 0 > /proc/sys/dev/raid/speed_limit_max

petergloor

General file permissions for ssh.

chmod 700 ~/.ssh
chmod 600 ~/.ssh/id_rsa
chmod 644 ~/.ssh/id_rsa.pub  
chmod 644 ~/.ssh/authorized_keys
chmod 644 ~/.ssh/known_hosts

petergloor

package main

import "fmt"

// Constant definitions
const MaxUint = ^uint(0)
const MinUint = 0

const MaxInt = int(^uint(0) >> 1)
const MinInt = -MaxInt - 1