Re: [Xen-users] Why Xen Project need an OS for doing Virtualization?

[Colin Boxall <cboxall@xxxxxxxxxxxxxxxxxxxxxx>]

Dom0 means you can use just about any hardware that is supported by the Dom0 OS.  This means almost any server can be a virtual host.  The alternative is having to get hardware that works with the drivers built into the hypervisor, and have a much smaller pool of available hardware.

On 7/18/2018 9:05 AM, Kevin Wang wrote:

From: Mohsen <mohsen1365b@xxxxxxxxx>

How about other Virtualization platforms like ESXi? I mean is why Xen Project not created its own OS?

You speak as if making or even building your own linux distribution was easy. it's not. Also, it would distract from the core mission; xen itself. 

I for one really like having an OS. I can run cron jobs to force reboots, backups, etc. Very little need be done by the developers to enable this; just provide a cli like 'xl' and commands like 'shutdown' and 'create'. I can ping my VMs and restart (destroy) them when they hang. Technically you could build a network/remote API to let you access all these things (e.g. config files, editors (e.g. vi vs emacs), stop/start console) but then only programmers can do any sort of automation, vs someone who knows just some basic shell scripting. Having an OS and a cli enables a lot more users and a lot more flexibility.

   - Kevin

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