xen January 2006

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17 participants
17 discussions

Simple testing results for Xen and VMX on FC5-test2.
by You, Yongkang 12 Jan '07

12 Jan '07

Hi all, I have done a simple checking for Xen and VMX on FC5-test2. Basically, I can create VMX on FC5-test2 IA32. But FC5-test2 IA32e (x86-64) doesn't provide Xen and Xen0 kernel, so didn't do Xen and VMX testing for it. Beside of testing Xen and VMX, I also found some issues about installation, which I have updated the bug #179078 as a NB. The following is the testing results only for Xen and VMX. ========================= 1. *** IA32E hasn't RPMS about Xen hypervisor and Xen0/XenU kernels. __FAIL__ 2. *** In order to boot up IA32 Xen0, I have to add pci=noacpi as the boot parameters of Xen0 kernel, or system will hang when initial PCI. I don't know if it is only related to my Machine. __FAIL__ 3. After install IA32 Xen RPMs, I can see /boot/grub/grub.conf has been changed with Xen kernels. __PASS__ 4. *** /usr/lib/xen/boot/vmxloader isn't in the RPM package, so VMX Guest couldn't be created. I suspected build system hasn't bcc, it is from DEV86 package. __FAIL__ 5. After copy a useable vmxloader to the destination, IA32 VMX Guest can be created successfully! __PASS__ 6. VMX has good network connection and Xwindows started. __PASS__ 7. XenU can be created and works well. __PASS__ 8. Couldn't get Xen Changeset by "xm info" or "xm dmesg". 9. The new kernel names of Xen/Xen0/XenU seemed a little confused. E.g. the Xen0 name is like vmlinuz-2.6.15-1.29_FC5hypervisor. I thought hypervisor is for Xen.gz. Xen0 is the Service OS. ========================== Any comments please let me know. But I will have 8 days holiday from tomorrow, so emails reply might be slow and occasional. [FYI] We are planning to do more testing for FC5-test3. Best Regards, Yongkang (Kangkang) 永康

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Hang when starting xenU using riel's packages
by Yip Wai Peng 08 Feb '06

08 Feb '06

Hi all, I am using kernel-xenU, kernel-xen0, and xen-3 from http://people.redhat.com/~riel/xen_for_fc4/. xen0 boots up fine, but when I start xenU, it hangs at the below screen. I have already moved /lib/tls out of the way. --------- *************************************************************** *************************************************************** ** WARNING: Currently emulating unsupported memory accesses ** ** in /lib/tls libraries. The emulation is very ** ** slow. To ensure full performance you should ** ** execute the following as root: ** ** mv /lib/tls /lib/tls.disabled ** ** Offending process: init (pid=1) ** *************************************************************** *************************************************************** Continuing... ---------- My xen config file is as follows: kernel ="/boot/vmlinuz-2.6.12-1.1454_FC4xenU" memory = 128 name = "waipeng" nics = 1 disk = ['phy:/servers/waipeng,hda1,w'] root = "/dev/hda1" extra = "ro selinux=0 3 The log shows this: [2006-01-19 23:43:17 xend] DEBUG (image:156) initDomain: cpu=-1 mem_kb=131072 ssidref=-1 dom=3 [2006-01-19 23:43:17 xend] DEBUG (XendDomainInfo:843) init_domain> Created domain=3 name=waipeng memory=128 [2006-01-19 23:43:17 xend] INFO (XendRoot:141) EVENT> xend.domain.create ['waipeng', 3] [2006-01-19 23:43:17 xend] INFO (image:217) buildDomain os=linux dom=3 vcpus=1 [2006-01-19 23:43:17 xend] DEBUG (image:255) dom = 3 [2006-01-19 23:43:17 xend] DEBUG (image:256) image = /boot/vmlinuz-2.6.12-1.1454_FC4xenU [2006-01-19 23:43:17 xend] DEBUG (image:257) store_evtchn = 1 [2006-01-19 23:43:17 xend] DEBUG (image:258) console_evtchn = 2 [2006-01-19 23:43:17 xend] DEBUG (image:259) cmdline = root=/dev/hda1 ro selinux=0 3 [2006-01-19 23:43:17 xend] DEBUG (image:260) ramdisk = [2006-01-19 23:43:17 xend] DEBUG (image:261) flags = 0 [2006-01-19 23:43:17 xend] DEBUG (image:262) vcpus = 1 [2006-01-19 23:43:17 xend] INFO (xsobj:326) DBMap>introduceDomain> 3 59700 <EventChannel dom1:0:17 dom2:3:1> /domain/499d6865-9920-4f87-bc34-6fd4b1933bb3 [2006-01-19 23:43:17 xend] DEBUG (XendDomainInfo:698) writing key availability=online to path /cpu/0 in store [2006-01-19 23:43:17 xend] WARNING (XendDomainInfo:1100) Unknown config field boot [2006-01-19 23:43:17 xend] ERROR (XendDomainInfo:443) ['vif', ['mac', 'aa:00:00:7d:9a:01']] [2006-01-19 23:43:17 xend] INFO (XendRoot:141) EVENT> xend.domain.unpause ['waipeng', 3] Questions: 1) Anybody have encountered this before? How did you managed to solve this? 2) Does the mac error matters? Why is it there in the first place? I would appreciate any help given. Thanks! Wai Peng

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Re: [Fedora-xen] Simple testing results for Xen and VMXon FC5-test2.
by You, Yongkang 31 Jan '06

31 Jan '06

>-----Original Message----- >> 1. *** IA32E hasn't RPMS about Xen hypervisor and Xen0/XenU kernels. >__FAIL__ > >It's coming. I hope. The upstream x86_64 stuff from linux-2.6-merge >doesn't actually compile at the moment (though that's easy to fix), and >once compiled it fails in different, compiler-dependent ways on some of >my hardware. I've got a minimally stable boot now on a different box, >but the upstream base in this case is proving hard to work with. I am very glad to hear it is coming. :) Hope we can see it in the FC5-test3 x86_64 packages. > >> 2. *** In order to boot up IA32 Xen0, I have to add pci=noacpi as the boot >> parameters of Xen0 kernel, or system will hang when initial PCI. I don't know if >it is only related to my Machine. > >It's certainly hardware-dependent, but you're not the only person >reporting the need for such options. Please open a bugzilla so that we >can track this one properly, as we'd really like to automate such >options as much as possible for the main release. > >One thing that would be worth knowing is whether the main, non-xen >rawhide SMP kernel boots on this box. The UP kernel disables a bunch of >advanced hardware enablement for compatibility purposes, but the SMP one >should match Xen as closely as possible. I am not sure how common used my machine is. :( But it can work with latest Xen + 2.6.12 kernel in the RHEL4u2 or FC4. So the new problem may be related with new kernel 2.6.15? I can fire a new bug about it. My testing machine is SMP enabled. > >> 8. Couldn't get Xen Changeset by "xm info" or "xm dmesg". > >Not sure how easy that would be to add, since we don't build it out of >Mercurial directly but rather out of a tarballed copy from the CVS build >system. I'm being careful to add the changeset info to the changelog in >the rpm, though. Em. If we can found some changeset info in changelog or other way, it may bring some help to customers and developers. :-) > >Thanks, > Stephen Best Regards, Yongkang (Kangkang) 永康

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Re: [Fedora-xen] Simple testing results for Xen and VMXon FC5-test2.
by You, Yongkang 31 Jan '06

31 Jan '06

Hi Jeremy, Thanks for you quickly reply. >-----Original Message----- >> 9. The new kernel names of Xen/Xen0/XenU seemed a little confused. >> E.g. the Xen0 name is like vmlinuz-2.6.15-1.29_FC5hypervisor. I >> thought hypervisor is for Xen.gz. Xen0 is the Service OS. > >The kernel-xen-hypervisor package includes both the Xen hypervisor and >the dom0 kernel as these two are tightly intertwined. > Yes, I recognized the Xen hypervisor and dom0 kernel are coming from 1 package. But you see, the dom0 kernel is named vmlinuz-2.6.15-1.29_FC5hypervisor. I mixed it with Xen.gz at the beginning. Why not named it like vmlinuz-2.6.15-1.29_FC5Xen0 for easily distinguishing. :) >Jeremy > > Best Regards, Yongkang (Kangkang) 永康

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Simple Instructions on networking
by Randolph Hill 30 Jan '06

30 Jan '06

I am new to Fedora and Xen. I have everything up and running with the exception of being able to access the network from my guest domain. I am looking for some simple instructions to get me going. My system is connected to a Linksys Wireless router. I would like to have internet access from the guest domain. Pointers are appreciated. Thanks Randy Samui Systems, Inc. 5954B Bartonsville Road Frederick, MD 21701 PHONE: +1(301) 631-5799 vMail/FAX: +1(301) 542-0042 rdh(a)samuisystems.com

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Enabling NFS root for Xen guests in FC5
by Fraser Campbell 28 Jan '06

28 Jan '06

Hi, CONFIG_IP_PNP and suboptions as well as CONFIG_ROOT_NFS should be enabled in Xen guest kernels in order for NFS root to be used in Xen guests. At least kernel-xen-guest-2.6.15-1.29_FC5 and kernel-xen-guest-2.6.14-1.21_FC5 do not have these options enabled. I'm hoping these options can be enabled in future builds or were they intentionally turned off for a reason? Thanks, Fraser

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Re: [Fedora-xen] Draft Xen Quick Start for FC5
by Jeremy Katz 26 Jan '06

26 Jan '06

On Fri, 2006-01-27 at 11:26 +1300, Gawain Lynch wrote: > I have put up a Quick Start page on the wiki [1] for FC5. This document > is based on the original one for FC4 but is updated to take into account > changes in FC5/Xen 3. Ack, apparently, we were both working on similar things. I've actually updated the FC4 one to include a much better description of how to do things in FC5 taking advantage of the installer functionality rather than using yum and chroots. This is far better as it allows things like SELinux to work and gives you a much more manageable system. See http://fedoraproject.org/wiki/FedoraXenQuickstartFC5 for the write-up including this information. It probably makes sense to canonicalize on this as it is going to be the more supported method of installing guests with FC5 and later. Jeremy

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Draft Xen Quick Start for FC5
by Gawain Lynch 26 Jan '06

26 Jan '06

Hi All, I have put up a Quick Start page on the wiki [1] for FC5. This document is based on the original one for FC4 but is updated to take into account changes in FC5/Xen 3. I currently consider it draft but it Works For Me (tm). I would be very grateful if some of you could take it for a spin and let me know any issues/errors/omissions you find. It is not currently linked to the main Xen Wiki page, I'll do that once I am happy that I have it right. Take care, Gawain [1] http://fedoraproject.org/wiki/FedoraFC5XenQuickstart

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documentation/packages for xen on FC 5?
by Sam Folk-Williams 19 Jan '06

19 Jan '06

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I'm trying to get up to speed on xen from a user/support perspective. I've found the howto for FC 4 (and the link to the packages on Riel's people page) very helpful. Is there something similar for FC 5? Generally I'm wondering if the packages installed via yum from the main devel repos will work, or if someone has a link to packages for FC5. Also, would be more than happy to help contribute to documentation for the project. Thanks, Sam - - -- Sam Folk-Williams, RHCE Red Hat Global Support Services GPG ID: 1024D/1B0D46BA Public Key: http://people.redhat.com/sfolkwil/sfw.asc - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFDz6JBzOw+vBsNRroRAnlPAJ0T0M6TZKgBiWXiirtTl46UY+QvTQCfQvDE K/Ebepw8RkPuzc7zrd41WwE= =YeKA - -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFDz6LhzOw+vBsNRroRAnySAJ0X9NdwiBIetmhkCXcXSgDRhu9nSwCePrXz bsNjRSVGhsQBo9lWAK+feQY= =qXnQ -----END PGP SIGNATURE-----

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PAE enabled Xen?
by Fraser Campbell 19 Jan '06

19 Jan '06

Hi, I'm wondering if there are any plans to provide a PAE enabled version of xen, kernel-xen-hypervisor and kernel-xen-guest? We are doing extensive testing with FC5 and large memory machines (8GB so far). For now I will track down the source RPMs and look at rebuilding them. Thanks!

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xen January 2006