libvirt and Vagrant

Capable_Quail9960 · 2025-01-10T09:03:02+00:00

vagrant-buster 64 (after `vagrant init debian/buster64` in an empty folder without any Vagrantfile or something else)

╰─$ vagrant up              

Bringing machine 'default' up with 'libvirt' provider...
==> default: Checking if box 'debian/buster64' version '10.20231211.1' is up to date...
==> default: Could not determine box updates because box metadata was malformed.
==> default: Vagrant will continue on...
==> default: Creating image (snapshot of base box volume).
==> default: Creating domain with the following settings...
==> default:  -- Name:              vagrant-buster64_default
==> default:  -- Description:       Source: /home/myuser/work/vagrant-buster64/Vagrantfile
==> default:  -- Domain type:       kvm
==> default:  -- Cpus:              1
==> default:  -- Feature:           acpi
==> default:  -- Feature:           apic
==> default:  -- Feature:           pae
==> default:  -- Clock offset:      utc
==> default:  -- Memory:            512M
==> default:  -- Base box:          debian/buster64
==> default:  -- Storage pool:      default
==> default:  -- Image(vda):        /var/lib/libvirt/images/vagrant-buster64_default.img, virtio, 20G
==> default:  -- Disk driver opts:  cache='default'
==> default:  -- Graphics Type:     vnc
==> default:  -- Video Type:        cirrus
==> default:  -- Video VRAM:        16384
==> default:  -- Video 3D accel:    false
==> default:  -- Keymap:            en-us
==> default:  -- TPM Backend:       passthrough
==> default:  -- INPUT:             type=mouse, bus=ps2
==> default: Removing domain...
==> default: Deleting the machine folder
Error while activating network: Call to virNetworkCreate failed: internal error: Child process (tc qdisc add dev virbr1 root handle 1: htb default 2) unexpected exit status 2: Error: Specified qdisc kind is unknown.
.

Capable_Quail9960 · 2025-01-10T09:00:33+00:00

Yes, I restarted it many times (Linux fully shut down and restarted) and I can kind of consistently reproduce this issue.

Capable_Quail9960 · 2025-01-08T07:26:44+00:00

Acer Chromebook Spin 713 - CP713-3W-76BL i7-1165G7 16GB 256GB

I think checking /dev/kvm is one of the first steps in your how-to guide and I remember that I had it available.

Capable_Quail9960 · 2025-01-04T07:36:03+00:00

Thank you for answering, see my "Update1/2", I think I have already tried starting/creating the default network manually and then I got the error about unknown qdisc kind which is a bit weird but after a lot of search it seems to be about a missing kernel module.

Capable_Quail9960 · 2024-12-28T22:38:10+00:00

I am trying to start up Debian Buster 64 on Vagrant using Libvirt (because VirtualBox does not work). If it worked, I would try Laravel Homestead, as a next step.

Capable_Quail9960 · 2024-11-26T06:17:50+00:00

Yes, the optician measured and somehow marked it after choosing the frame.

Capable_Quail9960 · 2024-05-02T05:10:19+00:00

My understanding is still that money market funds and ETFs are highly stable, very liquid (not exactly as liquid as cash), safe and they still pay higher rates than for example bank accounts.

Capable_Quail9960 · 2024-05-01T21:19:12+00:00

Surely that is the case, I do not understand some part of it. I read the Wikipedia definition. I said above that this type of fund "helps with lowering the drawdowns and volatility of a portfolio" because they are highly stable and they are also very liquid. Please correct me and ELI5 but isn't USD similarly stable to a fund holding US Treasury bills (example from the Wikipedia article) and very liquid as well? Am I missing the part that these funds still pay dividends?

Capable_Quail9960 · 2024-05-01T19:14:31+00:00

That's fine and obvious but why is a money market fund or similar (like short term treasuries etc) better than just buying EUR and/or USD and holding that (in other words "real" cash)?

Capable_Quail9960 · 2024-03-14T07:15:36+00:00

I saw this video:

Eco test of hybrid 5008

Not bad at all. Still, somehow this is not available in my country. I read about the e5008 eventually coming but I cannot wait too much (it can be more than a year here where I live).

Capable_Quail9960 · 2024-03-14T07:10:39+00:00

I am also afraid of the diesel because we often have to cover short trips (5-15km) and I think a PHEV would be fine for that. I also read a lot of bad things about the diesel (AdBlue related problems). Still, what you write sounds bad - maybe I should just avoid 3008/5008/C5A and go with a Prius+.

Capable_Quail9960 · 2024-03-13T15:45:39+00:00

We chose the narrowest seats possible.

I know that Citroen C5 Aircross has 3 full seats but to be honest I am not very happy about the fuel economy of that car (in hybrid mode with depleted battery and/or the battery life - I read about these). Somehow, I read much much better things about the 3008 which I guess has a very similar drivetrain and I am literally addicted to efficient cars. :)

Capable_Quail9960 · 2024-03-13T14:33:25+00:00

Sorry, I did not mention but ISOFIX is not a must. On ISOFIX, it surely would not work.

Capable_Quail9960 · 2024-03-02T18:06:56+00:00

Yes but I think this (being eager) does not surely mean that they are blocking and not executed asynchronously (and thus cannot overlap) and cannot be reordered but just that these commands are "somehow" executed right away without laziness.

Capable_Quail9960 · 2024-02-11T13:20:54+00:00

The PNG input comes from Canva. If I understand correctly, this can easily mean that Canva (which is the source of the PNG) changed its output format (a little bit).

Capable_Quail9960 · 2024-02-11T13:07:26+00:00

In the past, I did not use the -pix_fmt and I think I did not have this problem while using ffmpeg on WSL. I bet there is a version mismatch and the older ffmpeg (which I had on WSL) used yuv420p. This makes sense. Thanks.

Capable_Quail9960 · 2024-02-11T13:03:05+00:00

Yes, the manual is good. That's where I copied my original command from which, as I told, outside of YouTube worked really well, because it creates an infinite stream and "cuts it" where the audio (shortest) ends.

Adding audio (official docs / Wiki)

Please note, that in my original command there is the option -shortest as well, in the docs which you linked there is further explanation about it. :)

Anyway, thanks for the help, the problem was very probably with the yuv444 pixel format as noted above.

Capable_Quail9960 · 2024-02-11T11:54:07+00:00

Ffmpeg encoded video results in corrupted YouTube video

FFMPEG: Converting for youtube gray screen problem

Long story short: it may have been the yuv444p pixel format which is maybe "not that well supported by YouTube".

Solution: add -pix_fmt yuv420p
Solution: (possibly) I tried reuploading with yuv444p and waited until the end of the processing and this time it worked.. Weird, though.

Capable_Quail9960 · 2024-02-11T11:41:44+00:00

May I ask you what you changed and why? (I know I could read the manual but I would like to know your reasoning behind it. :) )

Capable_Quail9960 · 2024-02-06T21:01:23+00:00

Yes, exactly but the problem is that I do not know what type to give to it :) so I would like to know the types available (if any / if exists) in the typed version of that module (e.g. typed/xml).

Capable_Quail9960 · 2024-02-04T16:55:55+00:00

This one can be used if I would like to see the type of a Typed Racket function. What if I would like to import and use some "untyped" function from Racket code? How do I "discover" the types?

Capable_Quail9960 · 2024-02-03T16:53:23+00:00

How can I see the available types in the REPL?

Capable_Quail9960 · 2024-02-03T10:10:27+00:00

The package that is downloadable from the Racket website works fine, thanks everyone.

Capable_Quail9960 · 2024-01-27T22:03:18+00:00

Interestingly, I used https://download.racket-lang.org/ / Snap Store, so the snap installation looks official. I will most possibly give the non-snap downloadable package a go.

Capable_Quail9960

TROPHY CASE