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Re: [Xen-users] Longtime *nix user/admin planning on making the move toXen

  • To: <xen-users@xxxxxxxxxxxxx>
  • From: <admin@xxxxxxxxxxx>
  • Date: Wed, 31 Oct 2012 16:13:44 -0500
  • Delivery-date: Wed, 31 Oct 2012 21:15:01 +0000
  • Importance: Normal
  • List-id: Xen user discussion <xen-users.lists.xen.org>
  • Thread-index: Ac23jDQKDk4XzC64QOGvmw0tRMB85wAH76Yg

XCP definitely supports 64 bits.  The 32 bit issue is with the Dom0.  Don't
confuse the Dom0 with the DomU.  The 32 bit Dom0 does not limit the 64 bit
hypervisor from using all of the memory.  The DomU can all be 64 bit.  I
have used XCP on servers with 96GB each, and XCP works great.  Several of
the DomU each have 16GB allocated to them.  Those DomU are CentOS 64 bit.  

-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxx] On Behalf Of Braindead
Sent: Wednesday, October 31, 2012 12:19 PM
To: xen-users@xxxxxxxxxxxxx
Subject: [Xen-users] Longtime *nix user/admin planning on making the move

I've been meaning to change my local home server to several virtual machines
running under Xen.  Primarily to better serve my home/office network needs.
I've been running a Gentoo server that's become rather cluttered
inspection,workstation, backup server....... bloody everything!) so if I
want to work on anything or need to reboot everything goes down of course.

My first thought was to make my life simple and go with the XCP iso
installation, however according to this:
http://wiki.xen.org/wiki/Xen_/_XCP_/_XCP_on_Linux_Overview that doesn't
support 64-bit and I've got 16GB ram. I could install from packages it seems
but once I get to that point I'm thinking I might as well install Xen rather
than XCP and have the latest hypervisor.  

As a current Gentoo user I'm tempted to stick with that though I'm not
against Debian/Ubuntu or other distros either.  Perhaps there are other
compelling reasons to go with another distro?

I'm planning on moving a mythtv backend into a domU, so I'll need to compile
kernel support for the pcHDTV HD-5500 tuner card. Which I suspect means
custom kernel build anyway? Presumably I can use the PCI passthrough feature
to make the domU system see the 5500..hopefully.

I have a lot of experience with virtualization (VMWare and Hyper-V) just
none with Xen.. I've been reading the wiki and I'm fairly sure I can get
setup without any trouble.

Kinda hoping for a gut check/tips/advice from users that might help me avoid
doing the wrong things.  I'm not in a big hurry and pretty much prepared to
have to redo things if I go down the wrong path ;-)

Thanks for any tips/advice/hints...

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