xen April 2012

xen@lists.fedoraproject.org

5 participants
11 discussions

execute commands from dom0 into domU
by silviu d 06 Jun '15

06 Jun '15

Hello, I was wondering if there is a way to execute commands from dom0 into domU without loging into domU with ssh. thanks

3 2

Boot errors
by Chris Jones 17 May '12

17 May '12

I installed Fedora 16 and then ran: sudo yum install xen Xen installed without errors and I rebooted. In the Grub2 list I selected Xen 4.1.2 and then selected the option: Fedora Linux, with Xen 4.1.2 and Linux 3.3.0-4.fc16.x86_64 The boot process starts (i notice that loading ramdisk is very short) and then shortly thereafter the boot fails and the system reboots without any error. I tried checking the boot log but I'm not sure I'm looking at the right log. The only problem I see in the boot is Started SYSV: sandbox, xguest and other apps that want to use pam_names$ Failed to start Xenstored - daemon managing xenstore file system

5 11

DomU nat router fails when DomUs on same host
by Virgil 10 May '12

10 May '12

Hi List, I have a strange issue someone, hopefully, can advise me on. I have two external connections into a host: em1 is behind a firewall machine which is connected to an internet backbone link, while em2 is an adsl all-u- can-eat deal with a cheap router. Both are bridged. So there's pem1 and pem2 which are connected to the em1 and em2 bridges respectively. There is a domU router which nats (and is connected to both bridges). Some domU servers (a variety of fc6 to fc16 32 and 64) default route to the domU router and go out the all-u-can-eat link. The issue is, I recent upgraded the host from Fedora8 to Fedora16, and now the domU machines that once happily used the all-u-can-eat link, no longer can. However, in an act of desperation, I moved one of the domUs to a backup machine. Nothing else changed. Bingo. That domU works. All resources are still on the original machine (i.e. the DB servers, the router, etc. etc.). It seems that the router does't seem to nat domUs on the same host. You move the domU off with comms going via em1 to another host and it works. Iptraf tracing seems to indicate that the TCP connection is setup. The first packet goes off and is acked. Then everything stops and eventually the tcp connection closes on the router, but the domU and the remote computer think the link is still up (at least that's what I think is happening). The domU's send queue ends up with lots of data in it according to 'netstat -ant' Only nat'd tcp connections are effected. Connections to machines on the same bridge work fine. Does this sound familiar to anyone? Thanks in advance Virgil

2 1

Dom0 and colord
by Lars Bjørndal 05 May '12

05 May '12

I'm testing Xen dom0 on a Fedora 16 i686 box. I notice a process called /usr/libexec/colord, that leads to high cpu load, resulting in a spinning cpu fan. The process also runs when Xen is not running, but then the TIME reported by 'ps ax' is 0:00. As I'm blind and don't use any X or GUI, I think I don't need the colord process, so I did 'killall -9 /usr/libexec/colord'. However, this doesn't work from a script, like /etc/rc.d/rc.local, and I need to do it manually after every reboot. Where is colord started, and how can I get rid of the process? Thanks and regards, Lars

2 2

Error message after virt-install
by Lars Bjørndal 05 May '12

05 May '12

I'm not able to install a guest OS. I give the following command on my Fedora 16 machine, running i686: 'virt-install --connect xen:/// --os-type linux \ -l http://download.fedoraproject.org/pub/fedora/linux/releases/16/Fedora/i386/… \ --ram 512 --disk /var/lib/libvirt/images/f16.img,size=4 --name F16 \ --graphic none --paravirt --virt-type=xen \ -x "serial console=tty0 console=ttyS0,115200"' I get the following output: 'Starting install... Retrieving file .treeinfo... | 1.8 kB 00:00 ... Retrieving file vmlinuz-PAE... | 7.9 MB 00:03 ... Retrieving file initrd-PAE.img... | 257 MB 01:47 ... Creating domain... | 0 B 00:04 Connected to domain F16 Escape character is ^] error: Unable to open stream for '(null)': Bad address Domain installation still in progress. You can reconnect to the console to complete the installation process.' I'm not able to reconnect. How can I solve this problem? Thanks and regards, Lars

3 3

Reminder: Fedora 17 virt test day going on right now!
by Cole Robinson 05 May '12

05 May '12

Hey all, Just a reminder that the Fedora 17 virt test day is going on right now. If you've got an F17/rawhide machine (or even an F17 VM) and some spare time, use em to run through your regular virt workflow and file bugs for any issues you hit. A bunch of us are hanging out in #fedora-test-day on freenode. More info, including specific test cases: https://fedoraproject.org/wiki/Test_Day:2012-04-12_Virtualization_Test_Day Todd Deshane previously posted some xen specific test info: http://openetherpad.org/xen-fedora-testing Thanks, Cole

6 8

Re: [Fedora-xen] [Xen-users] Calling all Fedora Xen users, testers, and developers
by Todd Deshane 13 Apr '12

13 Apr '12

On Fri, Apr 13, 2012 at 3:49 AM, Dario Faggioli <raistlin(a)linux.it> wrote: > On Fri, 2012-04-06 at 13:16 -0400, Todd Deshane wrote: >> The Fedora community is holding a virtualization test day [1] next >> week (Thursday) and it would be great if we could help them on the Xen >> side of things >> > I really agree on this... Even ex-post... :-/ > >> Let me know if you are interested in helping out and I'll coordinated >> the Xen efforts. >> > Anyway, by being on the deputed IRC channel yesterday I got the > impression that they/we are planning another Fedora-Xen test day, is > that the case? If yes, please follow up on us on when it will be... I'm > not sure I can, but I'd be glad to help! Yes, we had some testers that were unable to be available or had troubles getting Fedora 17 itself installed, so we are hoping to get those issues resolved and try again soon. As soon as I hear back that the Fedora 17 install issue is resolved we plan to try again. I'll write back to these lists and announce a new Fedora Xen test day. Thanks, Todd -- Todd Deshane http://www.linkedin.com/in/deshantm http://blog.xen.org/ http://wiki.xen.org/

1 0

Xen Fedora Virtualization Test Day Planning
by Todd Deshane 10 Apr '12

10 Apr '12

Hi All, I've put together some resources for the Xen testing effort. http://openetherpad.org/xen-fedora-testing Please let me know if you are planning to help with this effort and I will continue to coordinate. Thanks, Todd -- Todd Deshane http://www.linkedin.com/in/deshantm http://blog.xen.org/ http://wiki.xen.org/

1 0

Re: [Fedora-xen] [Lars Bjørndal] Re: Error message after virt-install
by Cole Robinson 09 Apr '12

09 Apr '12

On 04/09/2012 02:59 PM, Lars Bjørndal wrote: > Hi > > I sent the attached message to the xen list, but the list seems to be > broken at the moment. > Hmm, looks like libvirt is generating console XML like: <console type='pty'> <target type='xen' port='0'/> </console> There should be a pty path in there. That error message: error: Unable to open stream for '(null)': Bad address Is coming from virsh console. Looks like there is already a bug for it: https://bugzilla.redhat.com/show_bug.cgi?id=806984 Thanks, Cole

1 0

Calling all Fedora Xen users, testers, and developers
by Todd Deshane 06 Apr '12

06 Apr '12

The Fedora community is holding a virtualization test day [1] next week (Thursday) and it would be great if we could help them on the Xen side of things Let me know if you are interested in helping out and I'll coordinated the Xen efforts. Thanks, Todd [1] http://fedoraproject.org/wiki/Test_Day:2012-04-12_Virtualization_Test_Day -- Todd Deshane http://www.linkedin.com/in/deshantm http://blog.xen.org/ http://wiki.xen.org/

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xen April 2012