September 2009 - virt - Fedora Mailing-Lists

by rt

Hi all, I'm on fedora11 64bit, using those packages: qemu-common-0.10.6-4.fc11.x86_64 qemu-img-0.10.6-4.fc11.x86_64 qemu-system-x86-0.10.6-4.fc11.x86_64 qemu-kvm-0.10.6-4.fc11.x86_64 virt-manager-0.7.0-5.fc11.x86_64 virt-viewer-0.0.3-6.fc11.x86_64 python-virtinst-0.400.3-8.fc11.noarch libvirt-python-0.6.2-17.fc11.x86_64 libvirt-0.6.2-17.fc11.x86_64 I've created a vm with qcow2 disk format (using virt-manager). I tried to take snapshot of vm using "qemu-img snapshot" command but reverting to a snapshot corrupt the vm disk... Is snapshot feature working in this release? Any suggestion? Thank you in advance, Roberto

14 years, 7 months

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Multicast on qemu-kvm?

by James Hubbard

I've noticed that multicast apps don't seem to work with qemu-kvm using a windows guest. Anyone know the reason? -- James Hubbard

14 years, 7 months

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Multicast (was: Re: [fedora-virt] Multicast on qemu-kvm?)

by Richard W.M. Jones

AIUI multicast between guests requires support in the router, which in this case would be the host bridge device, eg. virbr0, or possibly dnsmasq. I have absolutely no idea if the Linux bridge device can do this though. Do we have any test programs that can test this? The only one I'm aware of is udpcast. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top

14 years, 7 months

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Windows XP BSOD on USB all-in-one device

by Tom Horsley

Just for grins, I tried connecting my usb HP Photosmart C5580 all-in-one scanner/print to my Windows XP KVM yesterday, and while the HP software was sorta able to recognize the device and get installed, every time I tried to actually do anything like scan or print, Windows XP would give a BSOD and then reboot beforfe I got a chance to see what the BSOD actually said. Is there a way to capture BSOD screens? (This was on a fully updated fedora 11). Is a complicated usb device like this even expected to work these days? (Accidentally sent this to fedora-list rather than fedora-virt the first time - sorry about the noise if you subscribe to both).

14 years, 7 months

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Do I have to bugzilla for rpm requirements of virt-df?

by Gianluca Cecchi

Running virt-df on a F11 x86_64 system with fedora-virt-preview enabled I get this: [root@virtfed ~]# virt-df prova2 Filesystem 1K-blocks Used Available Use% open_guest: no libvirt support (install Sys::Virt, XML::XPath and XML::XPath::XMLParser) at /usr/lib64/perl5/vendor_perl/5.10.0/x86_64-linux-thread-multi/Sys/Guestfs/Lib.pm line 148. perl-Sys-Virt is already installed while I'm missing the perl-XML-XPath and related dependencies... After I do a yum install perl-XML-XPath that makes automatically: Installing: perl-XML-XPath noarch 1.13-8.fc11 fedora 85 k Installing for dependencies: perl-Compress-Raw-Zlib x86_64 2.008-73.fc11 updates 81 k perl-Compress-Zlib x86_64 2.008-73.fc11 updates 37 k perl-HTML-Parser x86_64 3.60-1.fc11 updates 121 k perl-HTML-Tagset noarch 3.20-2.fc11 fedora 17 k perl-IO-Compress-Base x86_64 2.008-73.fc11 updates 62 k perl-IO-Compress-Zlib x86_64 2.008-73.fc11 updates 143 k perl-URI noarch 1.37-2.fc11 fedora 121 k perl-XML-Parser x86_64 2.36-4.fc11 fedora 298 k perl-libwww-perl noarch 5.825-2.fc11 fedora 397 k I'm able to run virt-df (though a bit slow to output the results): [root@virtfed ~]# virt-df prova2 Filesystem 1K-blocks Used Available Use% prova2:/dev/sda1 198337 21627 166470 16.1% prova2:/dev/vg_prova2/lv_root 3918752 3162200 557488 85.8% Question: so virt-df should have as dependency perl-XML-XPath, otherwise is unusable, correct? Or could it stay without perl-XML-XPath connecting to VMs in other ways? As I'm on f11+fedora-virt-preview repo I donna if this is a non-problem and instead it is ok on F12. it seems that both virt-df and perl-XML-XPath rpms are form f11 repos so probably I have to bugzilla for F11? Gianluca

14 years, 7 months

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ubuntu virtio and qcow2?

by Tom Horsley

I installed an ubuntu 9.10 KVM virtual machine using virt-manager on fedora 11. It worked fine, then I tried to convert the image file to qcow2 format and the ubuntu system immediately started flaking out. First not letting me login due to a fatal PAM error, then kernel panicing because it killed init, just degenerating very rapidly :-). Switching back to the original raw file image made the machine work fine again. Is there a known problem here? Should I report a bug somewhere (against what? ubuntu?, fedora?).

14 years, 7 months

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vncviewer and dot cursor

by Tom Horsley

For those irritated by the extra "dot" cursor you always get when using vncviewer to get to a kvm console, I've just submitted this suggested patch which works great for me: https://bugzilla.redhat.com/show_bug.cgi?id=524340 It just makes the existing -DotWhenNoCursor=0 option affect the default cursor vncviewer uses at startup (which is the only cursor you ever seem to get in a kvm console window).

14 years, 7 months

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Qemu savevm and CPU stuck

by Benjamin Cleyet-Marrel

Hi, First post to this list so sorry if I am mistaken. I've browsed the wiki and googled and could not find anyone having or reporting the same problem. I am using fedora virt-preview repository on a fedora 11 stable The savevm/loadvm seems to be slightly broken: The guest is a Centos5.3 When issuing a savevm in the monitor, Guest get stuck for a few seconds and I get the infamous soft lockup a couple of time. (see bellow) The snapshot is working. When doing a loadvm I often get weird behaviour on the console. this can be completly removed if I issue a stop and cont before and after the loadvm. Question is: Am I doing somthing wrong or is this a bug ? Thanks Cheers Ben Sep 18 10:58:48 dhcp155 kernel: BUG: soft lockup - CPU#0 stuck for 10s! [swapper:0] Sep 18 10:58:48 dhcp155 kernel: Sep 18 10:58:48 dhcp155 kernel: Pid: 0, comm: swapper Sep 18 10:58:48 dhcp155 kernel: EIP: 0060:[<c044d219>] CPU: 0 Sep 18 10:58:48 dhcp155 kernel: EIP is at handle_IRQ_event+0x39/0x8c Sep 18 10:58:48 dhcp155 kernel: EFLAGS: 00000246 Not tainted (2.6.18-128.el5 #1) Sep 18 10:58:48 dhcp155 kernel: EAX: 00000001 EBX: c06e6f00 ECX: f7c9bf80 EDX: c0754f9c Sep 18 10:58:48 dhcp155 kernel: ESI: f7c9bf80 EDI: 00000001 EBP: 00000000 DS: 007b ES: 007b Sep 18 10:58:48 dhcp155 kernel: CR0: 8005003b CR2: 080c3e80 CR3: 376ad000 CR4: 00000690 Sep 18 10:58:48 dhcp155 kernel: [<c044d2f0>] __do_IRQ+0x84/0xd6 Sep 18 10:58:48 dhcp155 kernel: [<c04074e5>] do_IRQ+0xb0/0xc3 Sep 18 10:58:48 dhcp155 kernel: [<c0405946>] common_interrupt+0x1a/0x20 Sep 18 10:58:48 dhcp155 kernel: [<c044d219>] handle_IRQ_event+0x39/0x8c Sep 18 10:58:48 dhcp155 kernel: [<c044d2f0>] __do_IRQ+0x84/0xd6 Sep 18 10:58:48 dhcp155 kernel: [<c044d26c>] __do_IRQ+0x0/0xd6 Sep 18 10:58:48 dhcp155 kernel: [<c04074ce>] do_IRQ+0x99/0xc3 Sep 18 10:58:48 dhcp155 kernel: [<c0405946>] common_interrupt+0x1a/0x20 Sep 18 10:58:48 dhcp155 kernel: [<c0428ba7>] __do_softirq+0x57/0x114 Sep 18 10:58:48 dhcp155 kernel: [<c04073eb>] do_softirq+0x52/0x9c Sep 18 10:58:48 dhcp155 kernel: [<c04059d7>] apic_timer_interrupt +0x1f/0x24 Sep 18 10:58:48 dhcp155 kernel: [<c0403bb0>] default_idle+0x0/0x59 Sep 18 10:58:48 dhcp155 kernel: [<c0403be1>] default_idle+0x31/0x59 Sep 18 10:58:48 dhcp155 kernel: [<c0403ca8>] cpu_idle+0x9f/0xb9 Sep 18 10:58:48 dhcp155 kernel: [<c06f59ee>] start_kernel+0x379/0x380 Sep 18 10:58:48 dhcp155 kernel: ======================= in dmesg

14 years, 7 months

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Tracebacks on F10 during guest operations

by Adam Huffman

Keep seeing tracebacks like this one when making new guests or trying to open consoles on existing guests using virt-manager on F10: [Wed, 16 Sep 2009 11:25:41 virt-manager 5488] ERROR (virt-manager:148) Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/details.py", line 715, in refresh_resources self.window.get_widget("config-maxmem").set_sensitive(True) File "/usr/share/virt-manager/virtManager/details.py", line 722, in page_refresh self.window.get_widget("details-menu-save").set_sensitive(False) File "/usr/share/virt-manager/virtManager/details.py", line 1440, in repopulate_hw_list self.vm.set_max_memory(maxmem.value * 1024) TypeError: 'NoneType' object is not iterable Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/engine.py", line 305, in show_details self.windowManager.connect("action-show-create", self._do_show_create) File "/usr/share/virt-manager/virtManager/details.py", line 288, in __init__ "on_config_boot_apply_clicked": self.config_boot_options_apply, File "/usr/share/virt-manager/virtManager/details.py", line 612, in update_widget_states AttributeError: 'NoneType' object has no attribute 'set_sensitive' virt-manager-0.6.1-2.fc10.x86_64 libvirt-0.5.1-2.fc10.x86_64 Adam

14 years, 7 months

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Keyboard stops working on XP KVM?

by Tom Horsley

I've just noticed a weird thing on my Windows XP KVM virtual machine: If I logoff the current user to get back to the windows login screen, the keyboard no longer works, but the mouse works fine. All I can do is use the mouse to reboot the system, I can't type any passwords to login. Anyone have any clues about what causes this?

14 years, 7 months

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virt September 2009