xen December 2009

xen@lists.fedoraproject.org

6 participants
7 discussions

No pcifront in F10?
by Jim Lutz 25 Oct '10

25 Oct '10

I have a virtual machine landscape consisting of a CentOS 5.3 Dom0 with Xen 3.1.2, some PV CentOS DomU's with PCI passthrough (same versions), and I'm trying to implement a F10 DomU with PCI passthrough. I set everything up for the passthrough, and the F10 guest can't see any of the devices with lspci. If I boot a CentOS PV machine with the same PCI passthrough configuration, the devices show up with lspci. I've seen some posts in various places about this issue, but no solutions. How do I implement this?

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blktap driver for xen-dom0
by 서지혜 30 Mar '10

30 Mar '10

I installed xen 3.4.1 & M.young's xendom0 kernel on fedora 12 beta. Everying works smoothly for me except that I can't use "tap:aio" for PV guest. It seems that blktap driver is not installed (not supported) on dom0 kernel. I think performance of guest OS is better when is mounted by blktap. Is there anyway I can use this option?

2 2

Dom0 kernels
by M A Young 13 Mar '10

13 Mar '10

I have built a new set of kernel packages based on fedora rawhide kernels and the xen/dom0/hackery branch of Jeremy's git repository ( http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=summary ). This batch (kernel-2.6.29-0.114.2.6.rc6.fc11) is available via the koji build system at http://koji.fedoraproject.org/koji/taskinfo?taskID=1149500 These are really for development and debugging purposes only, as I am still having problems getting them to boot, but others have reported more success at getting kernels based on this git repository working, so you might be lucky. Note to install these packages on Fedora 10 you will need to have rpm-4.6.0-1.fc10 installed (currently in updates-testing but it should be available in updates soon) because of the change to SHA-256 file digest hashing in recent Fedora 11 builds. Michael Young

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Re: [Fedora-xen] Dom0 kernels
by Boris Derzhavets 01 Jan '10

01 Jan '10

I've rebuilt your your rpms via xendom0.src.rpm on another F12 instance. Xend starts now, but this is the last what i can see on the screen, before it freeze. I can't get X started when kms is set Boris. --- On Thu, 12/31/09, Boris Derzhavets <bderzhavets(a)yahoo.com> wrote: From: Boris Derzhavets <bderzhavets(a)yahoo.com> Subject: Re: [Fedora-xen] Dom0 kernels To: fedora-xen(a)redhat.com, "M A Young" <m.a.young(a)durham.ac.uk> Date: Thursday, December 31, 2009, 2:07 PM I've tried to load your kernel under Xen 3.4.2 installed via xen-3.4..2.-2.fc13.src.rpm. It installed kms for Radeon HD 4650 ( high resolution on the screen), xend failed to start and screen output got frozen before login prompt. Kernel 2.6.31.6 been built via JF's Git Repo failes with kms for Radeon ( probe error 22) but gets successfully loaded under Xen 3.4.2 providing stable Dom0 on top of F12. Looks like i am missing something trying to work with your rpms. Boris. --- On Mon, 9/21/09, M A Young <m.a.young(a)durham.ac.uk> wrote: From: M A Young <m.a.young(a)durham.ac.uk> Subject: Re: [Fedora-xen] Dom0 kernels To: fedora-xen(a)redhat.com Date: Monday, September 21, 2009, 6:30 PM Another update (kernel-2.6.31-1.2.68.xendom0.fc12) is available at http://koji.fedoraproject.org/koji/taskinfo?taskID=1691729 and via the repository http://fedorapeople.org/~myoung/dom0/ . This update switches to the xen/master branch. Michael Young -- Fedora-xen mailing list Fedora-xen(a)redhat.com https://www.redhat.com/mailman/listinfo/fedora-xen

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xend error on FC12
by vipul borikar 23 Dec '09

23 Dec '09

Hi , I have installed xen 3.4.2 package on FC12. My dom 0 kernel is kernel-PAE-2.6.31.6-1.2.81.xendom0.fc12.i686.rpm. My machine is 32 bit Intel HT machine. I am successfully able to boot the dom 0 but xend fails to start. My xend.log shows: [2009-12-21 14:14:18 1805] INFO (SrvDaemon:332) Xend Daemon started [2009-12-21 14:14:18 1805] INFO (SrvDaemon:336) Xend changeset: unavailable. [2009-12-21 14:14:20 1805] ERROR (SrvDaemon:349) Exception starting xend ((111, 'Connection refused')) Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/xen/xend/server/SrvDaemon.py", line 341, in run servers = SrvServer.create() File "/usr/lib/python2.6/site-packages/xen/xend/server/SrvServer.py", line 251, in create root.putChild('xend', SrvRoot()) File "/usr/lib/python2.6/site-packages/xen/xend/server/SrvRoot.py", line 40, in __init__ self.get(name) File "/usr/lib/python2.6/site-packages/xen/web/SrvDir.py", line 84, in get val = val.getobj() File "/usr/lib/python2.6/site-packages/xen/web/SrvDir.py", line 52, in getobj self.obj = klassobj() File "/usr/lib/python2.6/site-packages/xen/xend/server/SrvNode.py", line 30, in __init__ self.xn = XendNode.instance() File "/usr/lib/python2.6/site-packages/xen/xend/XendNode.py", line 949, in instance inst.save() File "/usr/lib/python2.6/site-packages/xen/xend/XendNode.py", line 484, in save self.save_networks() File "/usr/lib/python2.6/site-packages/xen/xend/XendNode.py", line 499, in save_networks for network_uuid in XendNetwork.get_all()]) File "/usr/lib/python2.6/site-packages/xen/xend/XendBase.py", line 102, in get_record for key in keys]) File "/usr/lib/python2.6/site-packages/xen/xend/XendNetwork.py", line 196, in get_VIFs vms = XendDomain.instance().get_all_vms() File "/usr/lib/python2.6/site-packages/xen/xend/XendDomain.py", line 1778, in instance inst.init() File "/usr/lib/python2.6/site-packages/xen/xend/XendDomain.py", line 113, in init xstransact.Mkdir(XS_VMROOT) File "/usr/lib/python2.6/site-packages/xen/xend/xenstore/xstransact.py", line 355, in Mkdir complete(path, lambda t: t.mkdir(*args)) File "/usr/lib/python2.6/site-packages/xen/xend/xenstore/xstransact.py", line 361, in complete t = xstransact(path) File "/usr/lib/python2.6/site-packages/xen/xend/xenstore/xstransact.py", line 29, in __init__ self.transaction = xshandle().transaction_start() File "/usr/lib/python2.6/site-packages/xen/xend/xenstore/xsutil.py", line 18, in xshandle xs_handle = xen.lowlevel.xs.xs() Error: (111, 'Connection refused') [2009-12-21 14:14:21 1804] INFO (SrvDaemon:220) Xend exited with status 1. I know lot of people have got this error , but i tried all possible tweaks but not able to make xend running. I have attached xend-debug.log and xend.trace . I have entry in fstab and also i have disabled selinux. In xend-debug.log file shows some scsi files missing. Any ideas? Thanks Vipul

2 3

Where is my /proc/xen ???
by Tommy Schneider 22 Dec '09

22 Dec '09

Hi there I've a little problem, i just switch to Fedora 12, and need a Xen hypervisor. So i enabled Myoung repository and did a "yum install stuff". Everything went fine, instead that i can't start any xen thing, because there's no /proc/xen (from xend daemon to xm shell command) - I've had "none /proc/xen xenfs defaults 0 0" to fstab - Selinux disabled, killed in action, burned etc... - the booted kernel is : 2.6.31.6-1.2.81.xendom0.fc12.x86_64 Does someone knows where i'm wrong ? xenfs don't appears "in color" when i open it with vim, Tommy

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Fedora xen-3.4.2 rpms
by Pasi Kärkkäinen 14 Dec '09

14 Dec '09

Hello again, Xen 3.4.2 was released last week with a lot of updates, so it would be good to sync the Fedora rpm again. -- Pasi

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xen December 2009