2011/2/13 Dennis Jacobfeuerborn :
> On 02/13/2011 09:27 AM, Nataraj wrote:
>> Is there a simple way to directly install a vm on an lvm (or proably
>> seperate LVM's for root and swap)? For example something like:
Use a volume group as a storage pool in virsh/virt-manager:
http://docs.redhat.com/
2011/2/13 MargoAndTodd :
> On 02/12/2011 05:30 PM, Kenni Lund wrote:
>> 2011/2/13 MargoAndTodd:
>>> Eventually, I am going to remove Virtual Box from my and all
>>> my customer's machines in favor of KVM. So the Harmony may
>>> be short lived if KVM
2011/2/13 MargoAndTodd :
> Eventually, I am going to remove Virtual Box from my and all
> my customer's machines in favor of KVM. So the Harmony may
> be short lived if KVM does not also support USB as well
> as Virtual Box 4.0.x.
KVM only supports emulated USB 1.1 at the moment, all USB devices
2011/2/6 Thomas Smith :
> I am coming into this discussion a little late, so apologies if I ask for
> any information previously provided.
> I can help you with this, but I'll need to know the domU's file system
> layout to do so. Can you send the output of the following commands?
> * fdisk -l
> *
2011/2/6 Poh Yong Hwang :
> Hi Kenni,
> Sorry i might have miss it but if i do a man of qemu-img, i do not see
> resize option. I only see create, convert, commit and info.
Ohh, I'm sorry then :( Guess the qemu-img version in CentOS 5 just is too old...
qemu-img *is* the tool you want, neverthele
2011/2/6 Poh Yong Hwang :
> Hi,
> Thanks but my issue is i do not have enough diskspace to create another
> partition of the size that i needed. Is there a way for me to reduce the
> actual image size?
Yes, like I wrote 10 minutes ago: qemu-img resize
Best regards
Kenni
__
2011/2/6 Poh Yong Hwang :
> Hi,
> I have an issue. I have already resize the partition using Gparted. Now how
> can i resize the actual image size in virtual manager? I do not see any
> option for me to change the size of the allocated hard disk.
You're probably looking for the resize feature of t
2010/12/2 Fabian Arrotin :
> Why would so much people use a clusterfs for Virtualization ?
> Just use lvm and a logical volumes for your guests. No filesystem
> overhead and better performances.
...live migration...?
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2010/11/19 Nick :
> Thanks for the quick reply.
>
> On 18/11/10 23:45, Kenni Lund wrote:
>> The good thing about KVM compared to other virtualization solutions,
>> is that KVM doesn't try to reinvent the wheel. It leaves scheduling to
>> the Linux kernel, so whatev
> Do you have a rule of thumb as to how many core to assign
> to a guest? For instance, with an Intel x5650 with 6 real
> and 12 hyperthreaded cores, how many cores would you assign
> to the guest?
It fully depends on the load of your guests and how many guests you
want/need to run on a single se
2010/11/19 Nick :
> The problem with this is that it is obviously more of a constraint to have two
> physical CPUs available. Therefore adding virtual CPUs to a co-scheduled VM
> can
> actually make performance worse if the physical CPUs are under any sort of
> contention. Performance degrades r
2010/11/18 Pasi Kärkkäinen :
> Hello,
>
> If you're interested in running Xen 4.0 hypervisor/dom0 on RHEL6,
> take a look at here: http://wiki.xen.org/xenwiki/RHEL6Xen4Tutorial
>
> It explains steps needed to rebuild Xen 4.0.1 src.rpm from Fedora on RHEL6,
> and how to fetch dom0 capable 2.6.32.x k
2010/11/18 MargoAndTodd :
> Hi All,
>
> What are guest cores in KVM? Are they fake, like everything else
> in the guest?
KVM requires VT-x support in your CPU, to get optimal CPU-performance
in the guest. Eg. no, it is not emulated like for example the sound
card - the virtual CPU uses the hardwa
2010/11/14 MargoAndTodd :
> On 11/13/2010 07:44 AM, compdoc wrote:
>>> $ uname -r -m
>>> 2.6.18-194.26.1.el5 i686
>>>
>>> $ rpm -qa \*kvm\*
>>> kvm-36-1
>>> kmod-kvm-36-3
>>>
>>>
>>> Not even close to 83. :-(
>>
>> My centos 5.5 has kvm 83. I'm not sure how you got that old stuff
>
> I am 32 bit.
2010/11/13 Mathieu Baudier :
>> kvm-83. That said, as you've probably already read in the docs, KVM is
>> a "technology preview" in RHEL 5.x...6.0 will be the first version
>> with official/stable KVM support by Red Hat.
>
> My understanding is that KVM was tech preview in RHEL/CentOS 5.4 and
> off
2010/11/13 MargoAndTodd :
> On 11/11/2010 01:50 PM, Kenni Lund wrote:
>> No, you're not running an old version of qemu-kvm in CentOS. Like most
>> other packages, Red Hat has selected an (old and stable) version as
>> the baseline version and then backported bugfixes and
2010/11/13 MargoAndTodd :
> On 11/11/2010 01:50 PM, Kenni Lund wrote:
>> You'll never need to run it from the command line, use the available
>> management tools (libvirt+virsh from the command line,
>> libvirt+virt-manager from X11), it makes your life much much easier.
2010/11/11 MargoAndTodd :
> On 11/10/2010 08:31 PM, Mark Pryor wrote:
>>
>>
>> --- On Wed, 11/10/10, jaye...@gmail.com wrote:
>>
>>> From: jaye...@gmail.com
>>> Subject: Re: [CentOS-virt] KVM: where are the directions?
>>> To: "Discussion about the virtualization on CentOS"
>>> Date: Wednesday, No
2010/10/2 Tom Bishop :
> what I would like to know what is the latest KVM that I can run with 5.5 and
Run the qemu-kvm version included with CentOS and use the KVM modules
included in the default CentOS kernel - these versions are tweaked to
work the best in CentOS/RHEL.
> what are the best manag
2010/7/27 cris rock :
>
> On the /var/log/libvirt/qemu/p3k0401.log:
>
> LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin HOME=/
> /usr/bin/qemu-system-x86_64 -S -M rhel5.4.0 -m 1024 -smp 1 -name p3k0401
> -uuid 7658c102-0738-724c-40eb-e1c58b2c2369 -domid 3 -nographic -monitor
> pty -pidfile /var/run/lib
2010/5/28, Marcelino Mata :
>
>> >
>> > AFAIK KVM will always emulate CPUs not cores.
>> >
>> In fact, newer qemu/kvm supports "cores" parameter when used
>> with smp:
>> https://patchwork.kernel.org/patch/33961/
>>
>> RHEL6 beta has new kvm and qemu - it is possible to use
>> multi-core CPU within
2010/5/28 compdoc :
> Maybe the part about netfilter?
>
> http://wiki.libvirt.org/page/Networking
The part about disabling netfilter on bridges?
It is already done, line 78-80:
http://pastebin.com/jtTrHLqA
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2010/5/28 Marcelino Mata :
> Has anyone had any success getting WinXP 32bit to use 4 CPU's under
> Centos 5.5 KVM?
>
> I have tried everything and the best I can get is 2 CPU's. I tried
> everything listed here
> http://www.linux-kvm.com/content/running-windows-smp-guests I am using
> the VIRTIO
2010/5/27 Veiko Kukk :
> On 05/27/2010 12:21 PM, Aleksei Miheev wrote:
>>> Is it typo?
>>> There can be no subnet with /32 bit mask, it's single host only.
>>>
>>
>> Actually, it is possible:
>>
>> ip addr add xxx.yyy.zzz.215/32 dev eth0
>> ip route add xxx.yyy.zzz.193 dev eth0
>> ip route add defa
Hi
Is it expected behaviour that a libvirt NAT-based network is faster
than a libvirt routed network?
I would guess that the routed network would be the fastest one in all
cases, but I'm seeing the opposite in my setup. On a 100mbit internet
connection, the routed network tops at 4mbyte/sec, whil
2010/2/20 S.Tindall :
>
> On Sat, 2010-02-20 at 02:41 +0100, Kenni Lund wrote:
>> 2010/2/18 compdoc :
>> > I would also just use the e1000 emulation. Theres nothing
>> > better about the virtio devices...
>>
>> ...other than lower CPU utilization and hi
on.
Do your own testing if in doubt.
Best Regards
Kenni Lund
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just using qcow2 on top of a
Linux filsystem, the qcow2 solution seems much nicer :) Especially now
when the qcow2 performance has been highly optimized:
http://fedoraproject.org/wiki/Features/KVM_qcow2_Performance
https://rhn.redhat.com/errata/RHSA-2009-1659.
2009/12/12 Christopher G. Stach II :
> - "Kenni Lund" wrote:
>
>> I'm also very interested in how to make backups of Windows guests on
>> LVM. But will the shadow copy feature in amanda not only backup the
>> files within the Windows machine? I don'
e in amanda not only backup the
files within the Windows machine? I don't think I fully understand the
method - How do you then do a full restore, eg. with no working
Windows machine? Would you then have to do a clean install of Windows
in order to get the partition and bootloader setup correctly, aft
2009/12/2 Kenni Lund :
> 2009/12/2 Neil Aggarwal :
>> I am wondering if KVM is ready for production
>> for running a Windows Server 2003 32 bit guest.
> Well, the drivers works just fine for 64 bit guests, but they're
> tricky to install in their current form, since
till be fairly good.
You you, like me, don't mind a bit of hacking on the initial
installation of a Windows Server, running with NIC and block VirtIO
drivers should be just as stable (today I'm running VirtIO on all my
Windows and Linux systems).
Best Regards
Kenni Lund
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ead connect the virtual machine to your network,
meaning you can request a DHCP address if you have a DHCP server or
assign a static IP inside the virtual machine.
Best Regards
Kenni Lund
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2009/11/10 James B. Byrne :
>
> On Tue, November 10, 2009 09:16, Kenni Lund wrote:
>
>>
>> You need to configure your virtual machine to use a shared device,
>> eg. your bridge. If your client gets a 192.168.122.x address, you've
>> setup your virtual machin
2009/11/10 James B. Byrne :
>
> On Tue, November 10, 2009 05:34, Kenni Lund wrote:
>
>>
>> Yep, you do want tun/tap. But if you create a regular bridge and
>> tells virt-manager or libvirt to use this for your virtual
>> machines, virt-manager/libvirt wi
2009/11/9 James B. Byrne :
> Further, do I need tun/tap to host VMs that themselves support
> virtual ips? The module for tun I found as part of the base install.
> But I cannot locate the module for ethertap and yum does not tell
> me where it is found.
Yep, you do want tun/tap. But if you creat
2009/11/10 James B. Byrne :
>
> So, it would appear as if kvm-qemu-img is intended as a lightweight
> replacement for the full qemu package where all the functionality of
> the latter is not required. However, as I wish to use virt-manager
> clearly the full qemu package is required.
No, it's not
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