[PVE-User] Image format of disc
Martin Maurer
martin at proxmox.com
Thu May 20 15:05:54 CEST 2010
Hi again,
raw is fine, even better is using block devices (LVM volumes for VM´s), see http://pve.proxmox.com/wiki/Storage_Model
br, martin
> -----Original Message-----
> From: pve-user-bounces at pve.proxmox.com [mailto:pve-user-
> bounces at pve.proxmox.com] On Behalf Of Erik van Ast
> Sent: Donnerstag, 20. Mai 2010 14:45
> To: pve-user at pve.proxmox.com
> Subject: [PVE-User] Image format of disc
>
> Hi all,
>
> Can someone tell me what kind of image format we should use when
> creating new VM's?
> We have 2 VM's running at the moment. One is using VMDK because I copied
> it from a VMWARE ESX server, and the other is in RAW format because I also
> created a new VM and RAS is the default setting. Which one is considered
> best and most reliable?
>
> Met vriendelijke groet / Kind regards / Mit freundlichem Gruß,
>
> Erik van Ast
>
>
> -----Oorspronkelijk bericht-----
> Van: pve-user-bounces at pve.proxmox.com [mailto:pve-user-
> bounces at pve.proxmox.com] Namens pve-user-
> request at pve.proxmox.com
> Verzonden: woensdag 19 mei 2010 10:51
> Aan: pve-user at pve.proxmox.com
> Onderwerp: pve-user Digest, Vol 26, Issue 11
>
> Send pve-user mailing list submissions to
> pve-user at pve.proxmox.com
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
> or, via email, send a message with subject or body 'help' to
> pve-user-request at pve.proxmox.com
>
> You can reach the person managing the list at
> pve-user-owner at pve.proxmox.com
>
> When replying, please edit your Subject line so it is more specific than "Re:
> Contents of pve-user digest..."
>
>
> Today's Topics:
>
> 1. Couple of questions (Erik van Ast)
> 2. Re: Couple of questions (Martin Maurer)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 19 May 2010 10:29:31 +0200
> From: "Erik van Ast" <Erik.van.Ast at suzohapp.nl>
> To: <pve-user at pve.proxmox.com>
> Subject: [PVE-User] Couple of questions
> Message-ID:
> <80A72F1B1CFF80409D8E422437CEDC9A01D24EED at srv03-suzo-
> 03.Suzo.int>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi all,
>
>
>
> I have a couple of short questions and I hope someone can answer them for
> me. I have already searched the internet and most of the times there is an
> answer, but the answer is a bit too complicated for me, because I have a
> Windows background and not a Linux one. We are using more and more
> open source software and we are also starting to work with Linux based
> OS'es like Ubuntu and OpenSuse so I want to learn more...
>
>
>
> My questions regarding Proxmox :
>
>
>
> * What's the difference between the different disc busses (IDE,
> SCSI and VIRTIO)? I found multiple articles on this subject but not a very clear
> answer for me. I also saw that you need to use IDE for Windows and SCSI for
> Linux, but when do you use VIRTIO? And I have created a new OpenSUSE
> machine with which SCSI didn't work but IDE and VIRTIO did...
>
> * Is it important to choose a guest type when you install a new
> VM?
>
> * When you have a quad core CPU, can you choose for up to 4 CPU
> sockets, or can you only choose for 4 CPU sockets when you have 4 CPU's?
>
> * Can someone tell me what kind of network card I have to choose
> when creating a new KVM machine? What's the difference between the
> options?
>
> * What's the difference between KVM and OpenVZ? I have small
> experience with VMWare and is it true that KVM Is similar to VMWare? I
> have also tried to create a new VM with OpenVZ with a downloaded
> Appliance Template, but when I tried to install I couldn't connect to the
> internet and I couldn't create a new network card...
>
> * Is it easy and without risk to update the Kernel? We are using
> Proxmox 1.5 with kernel version 2.6.18-2-pve and I read that a newer version
> was available. Can it be upgraded without risk of losing data and how can we
> upgrade?
>
> * Is it possible to use 2 Proxmox servers connected to 1 SAN or
> NAS so when 1 Proxmox server goes down, the other is able to take over the
> machines residing on the SAN or NAS?
>
>
>
> Those are a lot of questions, but I hope someone can answer them for me so
> I am able to configure Proxmox for us in a better way. If someone can only
> answer those questions by referring to known articles, it's fine with me...
>
>
>
> Kind regards,
>
> Erik van Ast
>
>
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <http://pve.proxmox.com/pipermail/pve-
> user/attachments/20100519/9fe4f6b8/attachment-0001.htm>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 19 May 2010 10:50:50 +0200
> From: Martin Maurer <martin at proxmox.com>
> To: pve-user at pve.proxmox.com
> Subject: Re: [PVE-User] Couple of questions
> Message-ID: <4BF3A66A.7090307 at proxmox.com>
> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
>
> On 19.05.2010 10:29, Erik van Ast wrote:
> >
> > Hi all,
> >
> > I have a couple of short questions and I hope someone can answer them
> > for me. I have already searched the internet and most of the times
> > there is an answer, but the answer is a bit too complicated for me,
> > because I have a Windows background and not a Linux one. We are using
> > more and more open source software and we are also starting to work
> > with Linux based OS'es like Ubuntu and OpenSuse so I want to learn
> more...
> >
> > My questions regarding Proxmox :
> >
> > ? What's the difference between the different disc busses (IDE, SCSI
> > and VIRTIO)? I found multiple articles on this subject but not a very
> > clear answer for me. I also saw that you need to use IDE for Windows
> > and SCSI for Linux, but when do you use VIRTIO? And I have created a
> > new OpenSUSE machine with which SCSI didn't work but IDE and VIRTIO
> did...
> >
> Virtio drivers are the paravirtualized drivers for KVM.
> Use always virtio for Linux guests, net and block. If you want virtio for
> windows, you need drivers which are not freely available in good quality.
> redhat has signed drivers for windows, but not freely available and in some
> situations you will get not better performance - so for windows IDE is best,
> e1000 for net.
>
> > ? Is it important to choose a guest type when you install a new VM?
> >
>
> sets the behavior of the mouse (usb tablet or not).
>
> > ? When you have a quad core CPU, can you choose for up to 4 CPU
> > sockets, or can you only choose for 4 CPU sockets when you have 4 CPU's?
> >
>
> you can set whatever you want but never use more virtual CPU?s as you
> have available on the host -if you do this you will have extremly bad
> performance and stability problems.
>
> > ? Can someone tell me what kind of network card I have to choose when
> > creating a new KVM machine? What's the difference between the options?
> >
>
> virtio on linux, e1000 for windows.
>
> > ? What's the difference between KVM and OpenVZ? I have small
> > experience with VMWare and is it true that KVM Is similar to VMWare? I
> > have also tried to create a new VM with OpenVZ with a downloaded
> > Appliance Template, but when I tried to install I couldn't connect to
> > the internet and I couldn't create a new network card...
> >
> Take a look here:
> http://wiki.openvz.org/Main_Page
> http://en.wikipedia.org/wiki/Comparison_of_platform_virtual_machines
>
> if you have network issues with openvz containers, provide more details.
>
> > ? Is it easy and without risk to update the Kernel? We are using
> > Proxmox 1.5 with kernel version 2.6.18-2-pve and I read that a newer
> > version was available. Can it be upgraded without risk of losing data
> > and how can we upgrade?
> >
>
> live is risky by default, so you should always be prepared as good as possible
> (backup your data). but upgrade are quite smooth and hassle-free, just
> follow the howto on our wiki.
>
> > ? Is it possible to use 2 Proxmox servers connected to 1 SAN or NAS so
> > when 1 Proxmox server goes down, the other is able to take over the
> > machines residing on the SAN or NAS?
> >
> not yet out of the box, will be available in 2.x see
> http://pve.proxmox.com/wiki/Roadmap (beta earliest mid of year)
> >
> > Those are a lot of questions, but I hope someone can answer them for
> > me so I am able to configure Proxmox for us in a better way. If
> > someone can only answer those questions by referring to known
> > articles, it's fine with me...
> >
> maybe this one: http://lwn.net/Articles/375075/ and all pages on our wiki, of
> course - http://pve.proxmox.com
>
> br, martin
> >
> > Kind regards,
> >
> > Erik van Ast
> >
> >
> > _______________________________________________
> > pve-user mailing list
> > pve-user at pve.proxmox.com
> > http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
> >
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <http://pve.proxmox.com/pipermail/pve-
> user/attachments/20100519/ccfdfeb9/attachment.htm>
>
> ------------------------------
>
> _______________________________________________
> pve-user mailing list
> pve-user at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>
>
> End of pve-user Digest, Vol 26, Issue 11
> ****************************************
> _______________________________________________
> pve-user mailing list
> pve-user at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
More information about the pve-user
mailing list