Re: [Xen-users] Some questions about Networking and storage.

["Austin S. Hemmelgarn" <ahferroin7@xxxxxxxxx>]

On 2016-05-06 09:19, Simon Hobson wrote:
> Jason Long <hack3rcon@xxxxxxxxx> wrote:
>
> > I want to start my first VM via Xen and need your advice :
> > 1- How can I setup a NIC for my VM? Is it Bridge?
> http://wiki.xenproject.org/wiki/Xen_Networking
> Decide how you want your guests to access the network(s) and work from there. 
> All of my servers use virtual switches (bridges).
Unless you need absolutely maximum performance (in which case you should 
look at PCI pass-through of an NIC), have a specific need to do routing 
differently per-VM (if you don't know any reason why you would need 
this, you don't need it), or have a need to use Open vSwitch, I'd 
suggest just sticking with bridges, as it's a lot simpler to set up and 
maintain.
> > 2- My computer have two partitions and I want to dedicate second partition for 
> > my VMs, Must I create LVM or...? How can I dedicate 80 GB virtual HDD to my VM?
> http://wiki.xenproject.org/wiki/Storage_options
> That's much more a matter of preference. You can use files in the hosts 
> filesystem, or separate partitions (usually LVM for flexibility). And when 
> using partitions, you can use one partition per guest and let the guest 
> partition it as though it was one big virtual disk; or you can have one 
> partition per guest volume.
> Personally, I use LVM and create a logical volume for each separate filesystem 
> on the guest - so there'll be an LVM volume for ${guest}-root, another for 
> ${guest}-var, and so on. But that's just my preference.
This is also what I use on my systems.  It has the distinct advantage 
that you can do things like repair the filesystem  or edit configuration 
in the VM from Domain-0 when the VM is off, and also lets you do other 
interesting things (for example, if you're using a Gentoo VM, you can do 
all the installation work trivially from Domain-0).  The down side is 
that you can't do this with Windows easily (it refuses to use flat disks 
without a partition table), and it's non-trivial to get working with HVM 
based guests (because you have to have somewhere to store the 
boot-loader, and that was traditionally the MBR and the blank track 
between it and the first partition).

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