I have fought with qemu and virt-install to no avail, and I am completely stuck with an unhelpful error message that gets me absolutely nowhere.
FIRST, some necessary system configuration:
Base metal operating system is Ubuntu Server 20.04 LTS. No desktop environment. VM operating system will be Ubuntu Server 18.04 LTS. No desktop environment.
I have a 60GB LVM at /dragonode that I intend to use as the primary storage volume for this virtual machine:
calyodelphi@dragonweyr:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
[loop partitions omitted]
nvme0n1 259:0 0 477G 0 disk
├─nvme0n1p1 259:1 0 512M 0 part /boot/efi
├─nvme0n1p2 259:2 0 1G 0 part /boot
└─nvme0n1p3 259:3 0 475.4G 0 part
├─ubuntu--vg-ubuntu--lv 253:0 0 50G 0 lvm /
├─ubuntu--vg-dragonode--lv 253:1 0 60G 0 lvm /dragonode
└─ubuntu--vg-dragonhoard--lv 253:2 0 365.4G 0 lvm /dragonhoard
I have successfully configured a bridge with netplan to serve as the metal interface for the system:
calyodelphi@dragonweyr:~$ ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br0 state UP mode DEFAULT group default qlen 1000
link/ether f8:75:a4:b5:ca:ba brd ff:ff:ff:ff:ff:ff
3: wlo1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT group default qlen 1000
link/ether 94:e6:f7:36:91:d8 brd ff:ff:ff:ff:ff:ff
4: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
link/ether f8:75:a4:b5:ca:ba brd ff:ff:ff:ff:ff:ff
And now the command I cobbled together, and the problem:
calyodelphi@dragonweyr:~$ virt-install --name dragonode --ram=2048 --disk path=/dragonode/dragonode.qcow2,size=50,format=qcow2 --vcpus 1 --os-type linux --os-variant ubuntu18.04 --graphics none --network bridge:br0 --location 'http://archive.ubuntu.com/ubuntu/dists/bionic/main/binary-amd64/' --extra-args "console=tty0 console=ttyS0,115200n8 ip=192.168.1.144::192.168.1.1:255.255.255.0:dragonode.home:eth0:none"
ERROR Error validating install location: Could not find an installable distribution at 'http://archive.ubuntu.com/ubuntu/dists/bionic/main/binary-amd64/'
The location must be the root directory of an install tree.
See virt-install man page for various distro examples.
Most of this command I assembled mostly using this guide with a little bit of additional referencing from this collection of examples (specifically the linked section) and this helpful RedHat documentation, and also exchanged messages directly with the author of the first article.
However, upon running the above command, you can see the unhelpfully generic error.
The frustrating part of this, is that that URL comes directly from the manpage for virt-install in the --location argument definition:
-l, --location OPTIONS
Distribution tree installation source. virt-install can recognize certain distribution trees and fetches a bootable kernel/initrd pair to
launch the install.
--location allows things like --extra-args for kernel arguments, and using --initrd-inject. If you want to use those options with CDROM media,
you can pass the ISO to --location as well which works for some, but not all, CDROM media.
The "LOCATION" can take one of the following forms:
https://host/path
An HTTP server location containing an installable distribution image.
ftp://host/path
An FTP server location containing an installable distribution image.
ISO Probe the ISO and extract files using 'isoinfo'
DIRECTORY
Path to a local directory containing an installable distribution image. Note that the directory will not be accessible by the guest after
initial boot, so the OS installer will need another way to access the rest of the install media.
Some distro specific url samples:
Fedora/Red Hat Based
https://download.fedoraproject.org/pub/fedora/linux/releases/29/Server/x86_64/os
Debian
https://ftp.us.debian.org/debian/dists/stable/main/installer-amd64/
Ubuntu
https://us.archive.ubuntu.com/ubuntu/dists/wily/main/installer-amd64/
Suse
https://download.opensuse.org/pub/opensuse/distribution/leap/42.3/repo/oss/
Additionally, --location can take 'kernel' and 'initrd' sub options. These paths relative to the specified location URL/ISO that allow
selecting specific files for kernel/initrd within the install tree. This can be useful if virt-install/ libosinfo doesn't know where to find
the kernel in the specified --location.
For example, if you have an ISO that libosinfo doesn't know about called my-unknown.iso, with a kernel at 'kernel/fookernel' and initrd at
'kernel/fooinitrd', you can make this work with:
--location my-unknown.iso,kernel=kernel/fookernel,initrd=kernel/fooinitrd
I have tried multiple variations of the problem command:
All suggestions by a friend who has encountered this same error before and couldn't remember how he solved it.
The ISO attempt resulted in these last few lines after what seemed like initial success:
mount: mounting /root/cdrom/casper/extras/modules.squashfs-generic on /root/lib/modules failed: No such file or directory
mount: mounting /dev on /root/dev failed: No such file or directory
[a few more of these]
run-init: current directory on the same filesystem as the root: error 0
Target filesystem doesn't have requested /sbin/init.
[more run-init errors]
No init found. Try passing init= bootarg.
BusyBox v1.27.2 (Ubuntu 1:1.27.2-2ubuntu3.3) built-in shell (ash)
Enter 'help' for a list of built-in commands.
(initramfs)
I am so far beyond my own ability to solve this and desperately need help to get a VM running.
The VM setup that I intend to accomplish:
- VM at path
/dragonode/dragonode.qcow2
- VM OS: Ubuntu 18.04 LTS, without graphics
- Bind the VM's virtual network interface to
br0
- Provision with the IP address 192.168.1.144 so I can immediately ssh to it
- The rest should be self-explanatory in the original command
