On Tuesday 2019-10-29 at 11:01 AM US/East a team of amateur radio operations, myself included, made contact with the International Space Station. Thirteen students from Farmwell Station Middle School (FSMS), part of Loudoun County Public Schools (LCPS), were able to ask questions of Dr. Drew Morgan. This was thanks to the Amateur Radio on the International Space Station (ARRIS) program and Loudoun Amateur Radio Group (LARG).
This script helps identify what disks are in use (or not in use) by ZFS. It's a stupid-simple python 3 script that requires only 'sh'. You can get that via 'pip3 install sh'.
from sh import zpool,lsblk,ls
from pprint import pprint
print("Finding all disks")
sdisks = str(lsblk('-d').stdout)
# sdbl 67:240 0 7.3T 0 disk
alldisks = re.findall(r'(sd[a-z]+)\s+\d+:\d+\s+\d+\s+(.*?)\s+\d+\s+disk',sdisks,re.MULTILINE)
print("Found %d disks on system"%len(alldisks))
Check `pvdisplay` as Ceph can use LVM.
zfs destroy data/osd
cannot destroy 'data/osd': dataset is busy
For those who aren't aware, there is a bit of controversy in the ham radio community at the moment around Winlink. The tl;dr here is that a bunch of boaters started getting ham radio license so they could use Winlink to send and receive email when they're out at sea.
The problems started when a few of them started using it for more than personal use - they were using it commercially. This is strictly prohibited with ham radio. This is compounded by some of the boaters not using it properly; they'd use it on frequencies already in use by others at that time.
The LTO-6 drive in my i6000 is now working!
# IOB lookups, do not modify anything after this in the file
ilinkacc: $ cat /etc/exports
# See exports(5) for a description.
# This file contains a list of all directories exported to other computers.
# It is used by rpc.nfsd and rpc.mountd.
ilinkacc: $ cat /proc/cpuinfo
processor : 0
cpu : 440GP Rev. C
revision : 4.129 (pvr 4012 0481)
bogomips : 593.92
vendor : ADIC
machine : MCB