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From: Marc Haber <mh+usenetspam1118@zugschl.us>
Newsgroups: comp.os.linux.misc
Subject: Re: Using Debian to manage a multiple OS machine
Date: Mon, 19 Aug 2024 08:35:51 +0200
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"186282@ud0s4.net" <186283@ud0s4.net> wrote:
>   Def : "NvRAM" - Non-Volatile-Random-Access-Memory ...
>   the 'e-disk' you now find in every laptop and oft
>   even desktops these days. Most commonly "M2" but
>   the tech can be put in other things/formats. First
>   saw one in the Asus EEEPC as the main 'drive'.

That terminology is totally exotic. You're probably mixing up NVMe and
NVRAM.

>>>> I prefer KVM/libvirt/virt-manager. Virtualbox needs out of tree kernel
>>>> modules, which can be a hassle during upgrades. I don't agree on the
>>>> flexibility point. Virtualbox caters more for the novice user because
>>>> its GUI is a bit more polished.
>>>
>>>    KVM is perfectly good - UNTIL you want to maybe ENLARGE
>>>    a virtual disk. Then you've gotta edit config files and
>>>    do some other weird stuff.
>> 
>> Resize the LV the virtual disk resides on and the VM will behave as if
>> you exchanged the disk with a new one.
>> 
>>> With VBox its just sliding
>>>    a control and VBox does the rest.
>
>   With KVM ??? No, you have to make two edits in the
>   main config file.

Incorrect. Never had to do that.

>> This doesn't parse. KVM has been integral part of the mainline Linux
>> kernel tree for a decade while VBox still requires out-of-tree
>> Modules.
>
>   Ummm ... not always - the last place I used KVM was
>   a Debian, "Buster" I think. It DID install a KVM
>   optimized kernel - which SCREWED UP. Had to go
>   back to the previous kernel and nuke KVM.

Debian Buster does not have a package that matches linux-image and
KVM. What are you refering to?

Ubuntu has a KVM _guest_ kernel that just doesn't include drivers that
you don't use in a VM.

>> Stupid question: Is there a difference between VirtualBox and VBox?
>
>   Of course - entirely different code. The ENDS are kinda
>   the same, and kinda equally achieved. As Oracle could
>   get all greedy someday, I'm happy KVM & Xen are out there.

Can you give me a link to VBox please?

>>>    Hey, if you've got a hot i9 with gobs of ram then lots
>>>    of usable VMs are kinda the logical step.
>> 
>> I am running five server VMs on a machine with 4 Gig of RAM. My "big"
>> virtualization server has 32 Gigs and runs 22 VMs, with more than 10
>> Gig free to use for disk cache. So the "gobs of RAM" is lore from two
>> decades ago, any decently modern machine can handle a handful Linux
>> VMs just fine.
>
>   4 gig ? DO-able, but kinda TIGHT. The 32g unit ought to
>   be better. As for "gobs" ... depends on WHAT you're running
>   on the VMs. Some apps/servers are more memory-intensive
>   than others ... ArcGIS for example.

Of course. Any software is not going to be smaller on a VM than on
bare metal. But you can't blame that to virtualizatin.

>   Anyway, mem is still fairly cheap, so why buy 4g when 8g
>   barely costs any more ?

Because housing machines can get expensive pretty quickly. The APU I
am running those five VMs on comes with 4 GB and is not expandable.
And it does the job silently and doesn't get hot.

-- 
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Marc Haber         |   " Questions are the         | Mailadresse im Header
Rhein-Neckar, DE   |     Beginning of Wisdom "     | 
Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402