Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-12 Thread Joe Pruett
 as i'm reviewing the courseware for the rhel (centos) course i'm teaching next week, i'm going to ask the occasional question, possibly technical, possibly more policy.  first one involves the choice for virtualization.  the course has a short section involving virt using xen but everything

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-12 Thread Patrick Lists
On 08/12/2010 05:37 PM, Joe Pruett wrote: [snip] the one thing that hasn't been addressed yet by kvm scripts is that a shutdown/reboot of the host won't do a save/restore of the guests like xen can do. for that reason i still use xen for production systems and only use kvm for testing random

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-12 Thread Joe Pruett
Fedora 13 does save the guest on shutdown so I would expect this will be supported in RHEL6/CentOS 6 too. But when do you actually power down a RHEL/CentOS server? And if you did, wouldn't you have migrated the guests to another box already? mainly it is an issue for a quick reboot of the

[CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Robert P. J. Day
as i'm reviewing the courseware for the rhel (centos) course i'm teaching next week, i'm going to ask the occasional question, possibly technical, possibly more policy. first one involves the choice for virtualization. the course has a short section involving virt using xen but everything

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Paul Heinlein
On Mon, 9 Aug 2010, Robert P. J. Day wrote: as i'm reviewing the courseware for the rhel (centos) course i'm teaching next week, i'm going to ask the occasional question, possibly technical, possibly more policy. first one involves the choice for virtualization. the course has a short

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread James Hogarth
RHEL6 will not have xen for hosting. It could be a xen guest. If you are teaching with the concept of having guests under the RHEL host and you want your teachings relevant going forwards you will need to cover kvm. Sent from Android Mobile On 9 Aug 2010 19:35, Paul Heinlein heinl...@madboa.com

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Karanbir Singh
On 08/09/2010 07:06 PM, Robert P. J. Day wrote: as i'm reviewing the courseware for the rhel (centos) course i'm teaching next week, i'm going to ask the occasional question, possibly technical, possibly more policy. how much of this courseware is open source licensed ? Would you be

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Robert P. J. Day
On Mon, 9 Aug 2010, Karanbir Singh wrote: On 08/09/2010 07:06 PM, Robert P. J. Day wrote: as i'm reviewing the courseware for the rhel (centos) course i'm teaching next week, i'm going to ask the occasional question, possibly technical, possibly more policy. how much of this

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Bobby
On Monday, August 09, 2010 02:06:51 pm Robert P. J. Day wrote: as i'm reviewing the courseware for the rhel (centos) course i'm teaching next week, i'm going to ask the occasional question, possibly technical, possibly more policy. first one involves the choice for virtualization. the

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Mathieu Baudier
I recommend using VirtualBOX from Sun. Close to wire speed, no need to alter the kernel. Simple and flexible to use. I use VirtualBox on customer sites in order to virtualize a CentOS instance because it runs on Windows during the implementation phase, and then we can easily sneak it on their

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Whit Blauvelt
On Mon, Aug 09, 2010 at 03:17:10PM -0400, Bobby wrote: I recommend using VirtualBOX from Sun. Close to wire speed, no need to alter the kernel. Simple and flexible to use. No need to alter the kernel for KVM either. VirtualBox formerly from Sun has been gathering bugs since Oracle took over.

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Kwan Lowe
On Mon, Aug 9, 2010 at 2:06 PM, Robert P. J. Day rpj...@crashcourse.ca wrote:  as i'm reviewing the courseware for the rhel (centos) course i'm teaching next week, i'm going to ask the occasional question, possibly technical, possibly more policy.  first one involves the choice for

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Bobby
On Monday, August 09, 2010 03:50:02 pm Whit Blauvelt wrote: On Mon, Aug 09, 2010 at 03:17:10PM -0400, Bobby wrote: I recommend using VirtualBOX from Sun. Close to wire speed, no need to alter the kernel. Simple and flexible to use. No need to alter the kernel for KVM either. VirtualBox

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Karanbir Singh
Hi, On 08/09/2010 08:50 PM, Whit Blauvelt wrote: No need to alter the kernel for KVM either. VirtualBox formerly from Sun has been gathering bugs since Oracle took over. Do you have some data to back this up ? - KB ___ CentOS mailing list

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Karanbir Singh
On 08/09/2010 08:16 PM, Robert P. J. Day wrote: how much of this courseware is open source licensed ? Would you be willing to contribute some /all of it towards the CentOS wiki / docs effort ? sorry, it's not my C/W, it's being licensed for this course. From whom ? - KB

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Robert P. J. Day
On Mon, 9 Aug 2010, Karanbir Singh wrote: On 08/09/2010 08:16 PM, Robert P. J. Day wrote: how much of this courseware is open source licensed ? Would you be willing to contribute some /all of it towards the CentOS wiki / docs effort ? sorry, it's not my C/W, it's being licensed for

Re: [CentOS] xen vs kvm for virtualization on centos/rhel?

2010-08-09 Thread Whit Blauvelt
On Mon, Aug 09, 2010 at 11:11:59PM +0100, Karanbir Singh wrote: Do you have some data to back this up ? Yes. Search for my contributions to the VirtualBox forums and the VirtualBox bug reporting system. Also check for what experiences others are reporting there. I'm sure you'll agree it would