virt May 2011

virt@lists.fedoraproject.org

24 participants
15 discussions

Re: [fedora-virt] Routing to guests
by Robert Thiem 15 Jan '12

15 Jan '12

> From: Philip Rhoades > I can ssh from/to the host/guest OK but how do I set up a route (or > whatever is necessary) so that another machine: > eth0: 192.168.0.12 > can ssh to the guest? - "ssh 192.168.122.68" gives "no route to host" - > http://docs.fedoraproject.org/virtualization-guide/f12/en-US/html/ but > the problem does not seem to be covered there. Alexander is correct in saying that bridging would allow you to do that. There are two networking discussed in the guide. The first is a NAT (network address translation), in which the guests are given "private" ip addresses and any outbound traffic appears to be coming from the host machine's IP address. This is the same as the setup on your ADSL router where the internal network machines get addresses of 192.168.x.x but the internet sees your requests as coming from the IP address of your router. There should be lots of documentation in linux firewalling guides under sections on NAT (or possibly called IP Masquerading in some). Have a look at these for information on port forwarding to reveal services inside the virtual (such as ssh). The other option is bridging. This shares the physical network interface of the host with the guest. In this case the VM acts as though it's a machine plugged into the same subnet as the host, its services are accessible like those of the host and it's as vulnerable to attack as the host. Robert

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spice-gtk: menu bar shown in full-screen mode
by Ian Pilcher 01 Jun '11

01 Jun '11

Using SPICE from virt-manager and selecting View -> Fullscreen, the menu bar is still displayed, shifting the display downward. Fedora 15 spice-gtk-0.5-6.fc15.x86_64 libvirt-0.8.8-4.fc15.x86_64 virt-manager-0.8.7-4.fc15.noarch Anyone know of a workaround? -- ======================================================================== Ian Pilcher arequipeno(a)gmail.com "If you're going to shift my paradigm ... at least buy me dinner first." ========================================================================

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F14 Host with F15-preview repo
by Frank Murphy 30 May '11

30 May '11

I have an F15 Guest running on F14/virt-preview repo It is hard to make out the cursor arrowhead on the Guest, as the host has a white hand fingers outstretched over it. The hand is only there if cursor is over guest viewing area. Over Virt-Toolbar it reverts to normal host black arrow. Host for a while had a black X on it. Bluecureve icon\cursos theme on all machines real\virt Xfce desktop. rpm -qa | grep virt libvirt-python-0.8.8-4.fc14.x86_64 python-virtinst-0.500.6-2.fc14.noarch libvirt-0.8.8-4.fc14.x86_64 virt-manager-0.8.7-3.fc14.noarch libvirt-client-0.8.8-4.fc14.x86_64 Bug or messed config -- Regards, Frank Murphy UTF_8 Encoded Friend of Fedora

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Fedora virt status
by Justin Forbes 28 May '11

28 May '11

Fedora 14 - We have 101 open bugs, 5 of which have fixes in awaiting updates. - 1 bug has been closed in the last week Fedora 15 - Release tomorrow! - We have 36 open bugs 2 of which have fixes in awaiting updates. - 6 bugs have been closed in the last week - GA images have been cleared for release - Upcoming Dates of importance: 2011-05-24 Fedora 15 Final Release Fedora 16 It is time to start planning for the Fedora 16 release. What features are going to be proposed? What does the community want to see from Fedora 16 virtualiation? == Updates Needing review == The following packages are in updates-testing and need review and karma as appropriate: F14: - libguestfs-1.8.7-1.fc14 New stable version 1.8.7 with several small bugfixes. F15: There are no virt packages in updates-testing at this time. == Virt Preview Repository == The virt-preview repository is now active for F14 users wishing to run the latest F15 virt packages on their stable F14 systems. F13 virt-preview users will still get the latest F14 packages. For details on how to run enable virt-preview, please see: https://fedoraproject.org/wiki/Virtualization_Preview_Repository == Bugs of importance: == - 700560 F15 virt-manager gui locks/freezes in the default storage pool There is a bug which states that sym-linked storage pools will lock virt-manager, and now reports that the default storage pool does as well. - 674530 Change CDROM of guest, new CD is truncated to the size of the old Installing a very old guest which requires several CDs, the CD size is truncated to the size of the first CD. This issue has been resolved upstream and will be in the next qemu update. - 693530 Qemu does the wrong thing with Cache=None and looks like corruption btrfs complains about corruption when Windows guests do certain types of writes with cache=none. This is really a btrfs issue, qemu behaves as expected.

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Replace library WinXPs by virtual WinXPs on Fedora KVM?
by Rob 26 May '11

26 May '11

Hi, The current situation: * About 500 university library PCs run WinXP as the main OS. What I would like to know if following is possible: * Replace the WinXP by Fedora with virtualization software (KVM ?) and have WinXP as a guest OS, in such a way that the users immediately boot into WinXP without noticing the virtualization. * Over the network it should still be possible to access the host Fedora OS. Is this a feasible idea? If yes, can you give me some clues how to start? Thank you! Rob.

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Virt Tools Survey: What to do about virt-clone
by Richard W.M. Jones 23 May '11

23 May '11

I've volunteered for the task of fixing virt-clone[0]. There are a number of bugs which need to be addressed. Unfortunately the current virt-clone is broken-by-design since it cannot make changes inside the guest. [0] http://linux.die.net/man/1/virt-clone The bugs boil down to what Microsoft calls "sysprepping" the clone, which is to say, removing its existing identity, hostname, ssh host keys, persistent network rules, host SID and workgroup name (for Windows). It's helpful for Linux guests to remove some of this stuff[1] -- it will make the cloning process smoother. For Windows it's absolutely required[2]. [1] https://rwmj.wordpress.com/2010/09/24/tip-my-procedure-for-cloning-a-fedora… [2] http://technet.microsoft.com/en-us/library/cc721940%28WS.10%29.aspx All that virt-clone can do now is to copy the guest and make some simple changes to the libvirt XML (eg. giving it a new MAC address). It doesn't even address the sysprepping problem. The problem with sysprepping is that it's hard to do, and it's different for every operating system. I've summarized some of the techniques below. Worse than that, for some OSes there are different levels of sysprepping that an administrator might want; also see below. So I'd like feedback from "virt-clone next generation" users: (a) Is cloning guests useful for you or not? Often or infrequently? (b) Do you currently use virt-clone to clone guests? (c) Do you have a homebrew method to clone guests? What does it do? (d) Do you use another tool to clone guests? (And how is it?) (e) When you clone a guest, do you "sysprep" it or would you like to? (Using the term "sysprep" generically here, I mean any sort of reinitialization for Linux or Windows guests). (f) How do you feel about a multi-step process? virt-clone -> virt-sysprep -> virt-resize (for example) (g) Have you had other problems with cloning guests? (h) What have I missed out in this analysis? What other features have you missed in virt-clone? Sysprepping Windows ------------------- This is a complex, manual process. We do some steps to automate it in RHEV. It's best to read Microsoft's online documentation at [2][3][4]. [3] http://support.microsoft.com/kb/302577 [4] http://blogs.technet.com/b/megand/archive/2005/01/20/357570.aspx Fedora ------ In theory you can just write a file /.unconfigured in the root, and Fedora will go through the firstboot process at next boot (it will reset timezone, root password, netconfig, keyboard, authentication). Some admins will *not* want all of these things to be reset, and will want either a lesser degree of unconfiguration, or will want to control each thing manually. I'm not totally convinced that this hasn't been broken by systemd introduction in Fedora 15. general Linux ------------- See [1]. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/

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Disk image size issue with virt-clone
by Athmane Madjoudj 23 May '11

23 May '11

Hello, Five months ago, I had a disk image size issue with virt-clone, the details are in the bug description: https://bugzilla.redhat.com/show_bug.cgi?id=667509 I hope that someone try reproduce it. Best regards. -- Athmane Madjoudj RHCE

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spice on 32-bit
by Ken Dreyer 20 May '11

20 May '11

Are there any plans to get Fedora's 32-bit qemu-kvm package working with Spice support? Is this a limitation of the buildsystem, or something else? - Ken

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[PATCH 0/3] virt-win-reg: Add support for HKEY_USERS
by Richard W.M. Jones 17 May '11

17 May '11

This three part patch series extends virt-win-reg so it supports HKEY_USERS\... paths, for reading and writing user preferences. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v

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modifying per-user registry values?
by Tom Horsley 16 May '11

16 May '11

I notice that the virt-win-reg tool says it doesn't work with HKU/$SID keys, and by golly it doesn't :-). Is there a way to modify a users registry in a Windows XP image file using some other technique? I've got my custom clone script working to modify the machine name, but I'd like to also modify the default background image, which is in my user's hive.

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virt May 2011