virt July 2010

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Re: [CentOS-virt] incoming works out does not (prolly a newbiequestion)
by chaim.rieger＠gmail.com 15 Jul '10

15 Jul '10

How do I see if the guest is using br0 only eth0 is configured on the guest Sent via BlackBerry from T-Mobile

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Missing packages
by David Martin 15 Jul '10

15 Jul '10

I haven't seen anything on the announce list and don't see these in the repos: qspice-client - http://rhn.redhat.com/errata/RHEA-2010-0492.html spice-xpi - http://rhn.redhat.com/errata/RHEA-2010-0493.html kvm - http://rhn.redhat.com/errata/RHBA-2010-0479.html Anyone know what the story is? David Martin

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incoming works out does not (prolly a newbie question)
by Chaim Rieger 14 Jul '10

14 Jul '10

host and guest both centos 5.5 network is 192.168.62.40 host is setup as follows [root@cloud2 ~]# ifconfig br0 Link encap:Ethernet HWaddr 00:1A:64:12:10:D9 inet addr:192.168.62.199 Bcast:192.168.63.255 Mask:255.255.254.0 inet6 addr: fe80::21a:64ff:fe12:10d9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1705488 errors:0 dropped:0 overruns:0 frame:0 TX packets:1130086 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1103112199 (1.0 GiB) TX bytes:2544941783 (2.3 GiB) eth0 Link encap:Ethernet HWaddr 00:1A:64:12:10:D9 inet6 addr: fe80::21a:64ff:fe12:10d9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1714601 errors:0 dropped:0 overruns:0 frame:0 TX packets:2243903 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1134903389 (1.0 GiB) TX bytes:2627513407 (2.4 GiB) Interrupt:90 Memory:c8000000-c8012800 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:10396 errors:0 dropped:0 overruns:0 frame:0 TX packets:10396 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:8188566 (7.8 MiB) TX bytes:8188566 (7.8 MiB) virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:192.168.62.1 Bcast:192.168.62.255 Mask:255.255.255.0 inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:222 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:16218 (15.8 KiB) vnet0 Link encap:Ethernet HWaddr 9A:B0:F1:FE:9F:1C inet6 addr: fe80::98b0:f1ff:fefe:9f1c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:128 errors:0 dropped:0 overruns:0 frame:0 TX packets:1504 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:18288 (17.8 KiB) TX bytes:105343 (102.8 KiB) [root@cloud2 network-scripts]# cat ifcfg-eth0 # Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet DEVICE=eth0 #BOOTPROTO=static #BROADCAST=192.168.63.255 #HWADDR=00:1A:64:12:10:D9 #IPADDR=192.168.62.22 #NETMASK=255.255.254.0 #NETWORK=192.168.62.0 ONBOOT=yes BRIDGE=br0 [root@cloud2 network-scripts]# cat ifcfg-br0 # Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet TYPE=Bridge DEVICE=br0 #BOOTPROTO=static BROADCAST=192.168.63.255 #HWADDR=00:1A:64:12:10:D9 IPADDR=192.168.62.199 NETMASK=255.255.254.0 NETWORK=192.168.62.0 ONBOOT=yes KVM image is as follows [root@www ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 # Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ DEVICE=eth0 BOOTPROTO=none BROADCAST=192.168.63.255 HWADDR=54:52:00:04:00:1d IPADDR=192.168.62.14 NETMASK=255.255.254.0 NETWORK=192.168.62.0 ONBOOT=yes GATEWAY=192.168.62.40 TYPE=Ethernet i can access the kvm image from other hosts on the network , but the kvm image can not access anything except for the gateway what am i doing wrong here thanx

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Lockup with (none) login
by Ben M. 06 Jul '10

06 Jul '10

I had a CentOS 5.5 Xen "standard virtualization" install lockup on reboot after an battery backup (apcusbd) orderly shutdown induced by a power outage. It may have been sitting with two kernel updates without a reboot. I have to head to the site (with a fractured ankle), but reports indicate that it is at - (none) login: which only returns back to itself after a user login at console, including root. - the local user says, though the monitor speed was "too fast" that it is failing to find its mounts OR that the disk reported errors. It is on a dmraid (I know, please don't flame me). There is some critical information on the drives that did NOT backup. I need a list of tools and ideas to have a checklist to try and resurrect this machine. Of course I will go with - Live CD - CentOS 5.5 install. - Hard drives. I would appreciate any procedural methods to go about this and try to resurrect this machine.

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Re: [CentOS-virt] (KVM) How can I migrate VM in a non shared storage environment?
by Christopher Hunt 06 Jul '10

06 Jul '10

+1 for dd + nc over ssh if necessary. This process can and probably will saturate your ethernet interface, so depending upon the amount of traffic the box pushes on the public interface the size of the partition and other factors, sometimes i add a crossover cable between unused interfaces on the 2 boxes and run the process over that interface, so it doesn't impact the running vms. Cheers -Chris On 6/24/2010 9:00 AM, centos-virt-request(a)centos.org wrote: > Message: 3 > Date: Thu, 24 Jun 2010 10:52:57 -0400 > From: Kelvin Edmison<kelvin(a)kindsight.net> > Subject: Re: [CentOS-virt] (KVM) How can I migrate VM in a non shared > storage environment? > To: Discussion about the virtualization on CentOS > <centos-virt(a)centos.org> > Message-ID:<C848E989.30D95%kelvin(a)kindsight.net> > Content-Type: text/plain; charset="US-ASCII" > > > > > On 24/06/10 7:17 AM, "Poh Yong Hwang"<yongsan(a)gmail.com> wrote: > >> I have a server running CentOS 5.5 with KVM capabilities. I need to migrate >> all the VMs to another server with the exact same hardware specs. The problem >> is it is running on individual harddisks, not shared storage. What is the best >> way to migrate to minimise downtime? > > I've had good success using dd and nc (netcat) to copy the contents of a > disk or disk image from one machine to another, and verifying the copy was > successful with a md5sum or sha1sum of both the original and copied disk. > > Kelvin > > > > ------------------------------ > > _______________________________________________ > CentOS-virt mailing list > CentOS-virt(a)centos.org > http://lists.centos.org/mailman/listinfo/centos-virt > > > End of CentOS-virt Digest, Vol 34, Issue 13 > *******************************************

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accesing remote domU vnc console?
by Fernando Gleiser 06 Jul '10

06 Jul '10

I'm having an strange weird problem while trying to connect to a remote domU console The VM runs win2k3, I need to connect on the console in order to change its IP address I log into dom0, find the domU ID: [root@btreptab01 xen]# virsh list Id Name State ---------------------------------- 0 Domain-0 running 8 linux idle 9 win2k3 running so I open a new session and tunnel vnc through it: ssh -L 5907:localhost:5907 root@remoteip then launch a vnc client krdc localhost:7 and nothing happens :/ netstat shows the connection as established on both hosts, but I can't get a console working, just a blank screen I tried enabling vncserver on dom0, connecting to it, launching virt-manager and trying to attach to it, same result. It shows a "connecting to console" message and nothing more.... the dom0 host is in a datacenter many miles away from here, so walking to it and working on the server's console is not a practical option any ideas/help would be greatly apreciated

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virt July 2010