January 2012

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15 discussions - 84 posts

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14
[CentOS-virt] server host keys for kvm clones

Respecting cloning vm guests, I see in /etc/ssh the following: ssh_host_dsa_key ssh_host_dsa_key.pub ssh_host_key ssh_host_key.pub ssh_host_rsa_key ssh_host_rsa_key.pub Is there a simple script ...

James B. Byrne
Jan 4, 2012 at 2:08 pm
Jan 5, 2012 at 2:16 pm
13
[CentOS-virt] New Tutorial - RHCS + DRBD + KVM; 2-Node HA on EL6

Hi all, I'm happy to announce a new tutorial! https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial This tutorial walks a user through the entire process of building a 2-Node cluster for making ...

Digimer
Jan 3, 2012 at 9:29 am
Jun 19, 2012 at 10:59 am
8
[CentOS-virt] VirtIO disk 'leakage' across guests?

We are in the process of migrating several stand-alone server hosts onto a CentOS-6 kvm virtual host. We also use Webmin to administer our hosts. All of the guests, without exception, have been ...

James B. Byrne
Jan 16, 2012 at 1:05 pm
Jan 20, 2012 at 11:01 am
6
[CentOS-virt] Problem with Centos 6.2 KVM

Greetings, Launching the virt-manager yeilds following error Error polling connection 'qemu:///system': internal error Cannot find suitable emulator for x86_64 Traceback (most recent call last): File ...

Rajagopal Swaminathan
Jan 30, 2012 at 3:39 am
Jan 31, 2012 at 9:07 am
5
[CentOS-virt] Setting up serial ports on kvm guests

CentOS-6.2 We have a dedicated CentOS-5.7 host used for fax reception and transmission that we wish to move to a CentOS-6.2 virtual guest instance. The CentOS-6.2 virtual host has a 4-port serial ...

James B. Byrne
Jan 31, 2012 at 2:01 pm
Feb 8, 2012 at 2:31 pm
5
[CentOS-virt] No module named cygvirtmod

I'm trying to set up a xen guest on a machine that already has a few others running (not set up by me). It fails with the following error: + virt-install -r 512 -n host5 -f /dev/vol0/lvol5 ...

Lars Hecking
Jan 12, 2012 at 9:24 am
Jan 12, 2012 at 11:31 am
4
[CentOS-virt] Centos 6.2 / KVM troubles with network

Hi, I have installed CentOS 6.2 x86_64 and KVM/Qemu and I have some troubles with network. The first case: ----------------- The configuration is: - CentOS 6.2 (hardware machine) has one Ethernet ...

Radek Bursztynowski
Jan 14, 2012 at 8:59 am
Jan 14, 2012 at 12:22 pm
3
[CentOS-virt] CentOS6 virtio?

Are there any updated instructions for installing Windows virtio drivers on a KVM Windows XP vm under CentOS6? The virtio .iso directory structure is slightly different from what is described in the ...

Lars Hecking
Jan 31, 2012 at 10:30 am
Feb 1, 2012 at 11:05 am
3
[CentOS-virt] Cannot remove lvs associated with deleted vm guests

At the beginning of January I encountered a problem where several vm guests on a single host somehow managed to see the the virtual disks assigned to other guests on the same hosts. I was unable to ...

James B. Byrne
Jan 27, 2012 at 12:50 pm
Jan 30, 2012 at 12:45 pm
2
[CentOS-virt] turning off udev for eth0

I have set up a kvm host and configured a standard clone prototype for generating new guests. One persistent (pun intended) annoyance when cloning is the behaviour of udev with respect to the virtual ...

James B. Byrne
Jan 3, 2012 at 11:52 am
Jan 4, 2012 at 3:48 am
0
[CentOS-virt] Updated kvm kernael and now some guests are hung

Earlier this evening I updated our CentOS-6.2 kvm virtual host to kernel 2.6.32-220.4.1.el6. After rebooting three guests are hung. I cannot establish connections via the network (no route to host) ...

James B. Byrne
Jan 31, 2012 at 10:02 pm
Jan 31, 2012 at 10:02 pm
0
[CentOS-virt] (no subject)

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Wendy William
Jan 18, 2012 at 4:23 pm
Jan 18, 2012 at 4:23 pm
0
[CentOS-virt] centos 6 domU doesn't see all memory?

I'm running CentOS 6 x86_64 domU on CentOS 5 x86_64 dom0 The host is running 2.6.18-238.19.1.el5xen The guest is 2.6.32-220.2.1.el6.x86_64 'xm list' on the host shows 512mb memory allocated. 'free ...

Chris Wik
Jan 11, 2012 at 4:59 pm
Jan 11, 2012 at 4:59 pm
0
[CentOS-virt] KVM VM crash under I/O load (e1000 and virtio)

I'm pretty consistently getting crashed KVM VMs under network I/O load when using the e1000 and virtio NIC models, with the follow message in dmesg: qemu-kvm[8785]: segfault at d0 ip 00000031e3200a08 ...

Ben Clay
Jan 9, 2012 at 5:48 pm
Jan 9, 2012 at 5:48 pm
0
[CentOS-virt] iscsi target rescan means connections hang for five seconds

Hi, I'm starting to experiment with iscsi based volumes and while this works fine so far I ran into a problem. When I add a LUN to a target and refresh tgtd all i/o to that target seems to hang for ...

Dennis Jacobfeuerborn
Jan 3, 2012 at 10:03 am
Jan 3, 2012 at 10:03 am