Re: Restore backup to KVM

[solitone <solitone@mail.com>]

On 22/09/17 08:08, Reco wrote:
> Execute this on your source system.
>
> grep MODULES /etc/initramfs-tools/initramfs.conf
>
> If it says MODULES=most then you're in luck as it means your initrd
> contains all kernel modules for all kinds of hardware.
> And restoring from backup into QEMU-KVM means you only need to
> reconfigure the bootloader.
>
> > Is there a way to configure KVM so that it resembles my bare
> > metal, and the test is significant?
>
> That's highly unlikely. On x86-64 there are two QEMU device models
> worthy of speaking, and that's Intel i440FX and Intel Q35 motherboards.
> Chances are you have different hardware.
>
> So, it *will* have different NIC, Video adapter *and* most importantly,
> IDE/SATA/SCSI controller.
>
> Using Debian and MODULES=most you have a luxury of not to think about
> it.

Ok, I see, and it seems I'm in luck:

~$ grep MODULES /etc/initramfs-tools/initramfs.conf
# MODULES: [ most | netboot | dep | list ]
MODULES=most

But now I don't know what to do next, since:

> > I would install a basic debian system in KVM, and then overwrite it
> > with my backed up files. Is this approach correct?
>
> No. Some (but not all) configuration files would differ. Some (but not
> all) packages would differ.