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[libvirt-users] Will over-allocation of vCPUs be counterproductive to VM Win7 Ultimate?
by Allen Qiu 28 Oct '14

28 Oct '14

Hi all, Will over-allocation of vCPUs be counterproductive to VM Win7 Ultimate? I allocated 32 (out of 64 physical cores in 8 NUMA cells, and 128G out of 2T physical RAM) to the VM. But the boot process was extremly slow, actually the desktop screen never showed up then the VM just reboot automatically. So is there anything I can do to solve this problem or the truth is Win7 by design just cannot handle that mount of CPUs even with Win7 Ultimate? Regards, Allen 2014-10-28 Allen Qiu

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[libvirt-users] an error caused by lxc-enter-namespace command
by WANG Cheng D 28 Oct '14

28 Oct '14

Dear all, On my last post "Why a "core dump" error occurs when a thread exits in container but it's correct when running in native linux" might be misleading. I did further test and the steps are described below. 1) First, the container is started (we have the first terminal window) 2) Use virsh lxc-enter-namespace command to open another terminal (we have the second terminal) 3) Execute "exit" in the first terminal to quit container 4) Then an error is reported by the second terminal "internal error; child process (XXX) unexpected fatal signal 9" and the terminal is frozen then. How I solved this problems? Best regards, Cheng

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[libvirt-users] Why a "core dump" error occurs when a thread exits in container but it's correct when running in native linux
by WANG Cheng D 28 Oct '14

28 Oct '14

Dear all, When I run my application in a container, sometimes the thread can exit correctly, sometime a "core dump" error occurs when it exits. But the application always exits correctly when it runs in a native fedora. Malloc() and free() functions are used in my application. I wonder if this is the reason for the core dump error. Is the thread exit event treated differently by the container and native OS? Or if I need to tune some options for memory in container's XML configuration file? Best wishes, Cheng

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[libvirt-users] What is the difference between running "virt-manager" and "sudo virt-manager"?
by Allen Qiu 28 Oct '14

28 Oct '14

Hi all, What is the difference between starting virt-manager by "virt-manager" and by "sudo virt-manager"? It seems that there are two copy of virt-manager running in the background. When I run "virt-manager", I got a error of "Unable to open a connection to the libvirt management daemon. Libvirt URI is: qemu:///system Verify that: - The 'libvirtd' daemon has been started". Whereas when I run "sudo virt-manager", I got a error of "Error starting Virtual Machine Manager: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information." How should I deal with the two issues respectively? Is there any drawback by simply running "virt-manager"? Regards, Allen 2014-10-27 Allen Qiu

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Re: [libvirt-users] (no subject)
by Eric Blake 27 Oct '14

27 Oct '14

On 12/31/1969 05:00 PM, wrote: > Hi all, [your 800k .bmp file prevented your message from getting through the mailing list filter, which caps mail around 100k for a reason. Please, just describe your problem in plain text, or if you MUST point people to a screenshot, have your email simply contain a URL to a dropbox containing the screenshot, rather than sending it directly to the list. Also, .bmp is a lousy format; .png sends just as much information in a much smaller file size] > It seems no matter how many vCPU I allocated to the VM, the auto-generated vCPU pinning configuration won't cover more than 8 CPUs. Is that normal? Otherwise what should I do? Will vCPU pinning by virsh be more effective? virt-manager tries to be a gui wrapper around the same API as you can access directly via virsh; but sometimes virt-manager lags behind. Try doing it directly with virsh, to see if what you are attempting is even supported by libvirt and is just waiting on virt-manager to catch up. > Regards, > Allen > > > 2014-10-28 > > > > Allen Qiu > -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org

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[libvirt-users] How could the admin do to grant me with permission to run virsh as unprivileged user?
by Allen Qiu 27 Oct '14

27 Oct '14

Thank you! How could the admin do to grant me with permission to run virsh as unprivileged user? Also by configurating libvirtd.conf, unix_sock_group? 2014-10-28 Allen Qiu 发件人：libvirt-users-request(a)redhat.com 发送时间：2014-10-28 00:00 主题：libvirt-users Digest, Vol 58, Issue 33 收件人："libvirt-users"<libvirt-users(a)redhat.com> 抄送： Send libvirt-users mailing list submissions to libvirt-users(a)redhat.com To subscribe or unsubscribe via the World Wide Web, visit https://www.redhat.com/mailman/listinfo/libvirt-users or, via email, send a message with subject or body 'help' to libvirt-users-request(a)redhat.com You can reach the person managing the list at libvirt-users-owner(a)redhat.com When replying, please edit your Subject line so it is more specific than "Re: Contents of libvirt-users digest..." Today's Topics: 1. Error starting Virtual Machine Manager: Failed to contact configuration server... (Allen Qiu) 2. What is the difference between running "virt-manager" and "sudo virt-manager"? (Allen Qiu) 3. Re: What is the difference between running "virt-manager" and "sudo virt-manager"? (Sven Schwedas) ---------------------------------------------------------------------- Message: 1 Date: Mon, 27 Oct 2014 16:14:22 +0800 From: "Allen Qiu"<my1stbox(a)163.com> To: "libvirt-users(a)redhat.com"<libvirt-users(a)redhat.com> Cc: ??? <chengwu.wang(a)net263.com>, 'Bin Liu' <binliu_gh(a)yahoo.com> Subject: [libvirt-users] Error starting Virtual Machine Manager: Failed to contact configuration server... Message-ID: <5a1daafa.4851.14950ab9ff5.Coremail.my1stbox(a)163.com> Content-Type: text/plain; charset="utf-8" Hi all! Do you have any idea about the following error message from virt-manager. I was trying to start it with "sudo virt-manager". Do you think I can fix this by simply restarting libvirtd? Regards, Allen Error starting Virtual Machine Manager: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information. (Details - 1: Could not send message to GConf daemon: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.) Traceback (most recent call last): File "/usr/share/virt-manager/virt-manager.py", line 383, in <module> main() File "/usr/share/virt-manager/virt-manager.py", line 315, in main config = virtManager.config.vmmConfig(appname, appversion, glade_dir) File "/usr/share/virt-manager/virtManager/config.py", line 98, in __init__ self.conf.add_dir(self.conf_dir, gconf.CLIENT_PRELOAD_NONE) GError: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information. (Details - 1: Could not send message to GConf daemon: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.) 2014-10-27 Allen Qiu -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.redhat.com/archives/libvirt-users/attachments/20141027/2e37a157…> ------------------------------ Message: 2 Date: Mon, 27 Oct 2014 16:31:17 +0800 From: "Allen Qiu"<my1stbox(a)163.com> To: "libvirt-users(a)redhat.com"<libvirt-users(a)redhat.com> Cc: ??? <chengwu.wang(a)net263.com>, "zoubinbin100(a)163.com" <zoubinbin100(a)163.com>, 'Bin Liu' <binliu_gh(a)yahoo.com> Subject: [libvirt-users] What is the difference between running "virt-manager" and "sudo virt-manager"? Message-ID: <6b47a489.4b48.14950bb1af4.Coremail.my1stbox(a)163.com> Content-Type: text/plain; charset="utf-8" Hi all, What is the difference between starting virt-manager by "virt-manager" and by "sudo virt-manager"? It seems that there are two copy of virt-manager running in the background. When I run "virt-manager", I got a error of "Unable to open a connection to the libvirt management daemon. Libvirt URI is: qemu:///system Verify that: - The 'libvirtd' daemon has been started". Whereas when I run "sudo virt-manager", I got a error of "Error starting Virtual Machine Manager: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information." How should I deal with the two issues respectively? Is there any drawback by simply running "virt-manager"? Regards, Allen 2014-10-27 Allen Qiu -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.redhat.com/archives/libvirt-users/attachments/20141027/6d6c6296…> ------------------------------ Message: 3 Date: Mon, 27 Oct 2014 10:05:47 +0100 From: Sven Schwedas <sven.schwedas(a)tao.at> To: libvirt-users(a)redhat.com Subject: Re: [libvirt-users] What is the difference between running "virt-manager" and "sudo virt-manager"? Message-ID: <544E0AEB.4080005(a)tao.at> Content-Type: text/plain; charset="iso-8859-1" On 2014-10-27 09:31, Allen Qiu wrote: > Hi all, > > What is the difference between starting virt-manager by "virt-manager" > and by "sudo virt-manager"? It seems that there are two copy of > virt-manager running in the background. > > When I run *"virt-manager",* I got a error of "*Unable to open a > connection to the libvirt management daemon. **Libvirt URI is: > qemu:///system **Verify that: - The 'libvirtd' daemon has been started*". > > Whereas when I run *"sudo virt-manager",* I got a error of *"Error > starting Virtual Machine Manager: Failed to contact configuration > server; some possible causes are that you need to enable TCP/IP > networking for ORBit, or you have stale NFS locks due to a system crash. > See **http://projects.gnome.org/gconf/**for information."* > ** > How should I deal with the two issues respectively? Is there any > drawback by simply running "virt-manager"? You should set up correct permissions for libvirtd (cf. libvirtd.conf, unix_sock_group) and use virt-manager/virsh as unprivileged user. > > Regards, > > Allen > > 2014-10-27 > ------------------------------------------------------------------------ > Allen Qiu > > > _______________________________________________ > libvirt-users mailing list > libvirt-users(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users > -- Mit freundlichen Gr??en, / Best Regards, Sven Schwedas Systemadministrator TAO Beratungs- und Management GmbH | Lendplatz 45 | A - 8020 Graz Mail/XMPP: sven.schwedas(a)tao.at | +43 (0)680 301 7167 http://software.tao.at -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 648 bytes Desc: OpenPGP digital signature URL: <https://www.redhat.com/archives/libvirt-users/attachments/20141027/28f925c0…> ------------------------------ _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users End of libvirt-users Digest, Vol 58, Issue 33 *********************************************

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[libvirt-users] Error starting Virtual Machine Manager: Failed to contact configuration server...
by Allen Qiu 27 Oct '14

27 Oct '14

Hi all! Do you have any idea about the following error message from virt-manager. I was trying to start it with "sudo virt-manager". Do you think I can fix this by simply restarting libvirtd? Regards, Allen Error starting Virtual Machine Manager: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information. (Details - 1: Could not send message to GConf daemon: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.) Traceback (most recent call last): File "/usr/share/virt-manager/virt-manager.py", line 383, in <module> main() File "/usr/share/virt-manager/virt-manager.py", line 315, in main config = virtManager.config.vmmConfig(appname, appversion, glade_dir) File "/usr/share/virt-manager/virtManager/config.py", line 98, in __init__ self.conf.add_dir(self.conf_dir, gconf.CLIENT_PRELOAD_NONE) GError: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information. (Details - 1: Could not send message to GConf daemon: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.) 2014-10-27 Allen Qiu

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[libvirt-users] Using virsh on OSX to control a VMs on a linux machine
by Johannes Kastl 25 Oct '14

25 Oct '14

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi everyone, maybe this is a stupid thing, but Google found no answer. So, for the next one trying this: I have a linux server, that runs a couple of VMs, and on which libvirt and virsh work like a charm. From time to time I'm on a Mac OSX machine, where I can install libvirt from macports very comfortably. But this far I have not gotten it to work with anything apart from the virtualbox that is installed on osx. I always get a hangup error, that is not listed on http://wiki.libvirt.org/page/Failed_to_connect_to_the_hypervisor: > error: failed to connect to the hypervisor error: internal error: > received hangup / error event on socket So I had to enter the path to the socket (on the linux machine), as the OSX libvirt thinks it is in /opt/local/..., where the whole macports stuff is. On linux it's in /var/run/libvirt/. So, the following works: > virsh -c > qemu+ssh://example.org/system?socket=/var/run/libvirt/libvirt-sock > list --all Regards, Johannes - -- `Even if I could, I wouldn't. Scars can come in useful. I have one myself above my left knee which is a perfect map of the London Underground.´ (Albus Dumbledore, Harry Potter I) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) Comment: Using GnuPG with SeaMonkey - http://www.enigmail.net/ iEYEARECAAYFAlRLpysACgkQzi3gQ/xETbLb8QCeMXgA3A0erpPvc3fHpOWSnBYG 6AAAoI6e3+Kzk4Q30GBbixCgea6TBEGy =RMS/ -----END PGP SIGNATURE-----

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[libvirt-users] libvirt guests graceful shutdown upon hosts powerdown/reboot
by lejeczek 25 Oct '14

25 Oct '14

hi everybody by an assumption I expected VM guests to be shut down/off gracefully when the host is being powered down or rebooted, but this does not seem to be the case so I wonder.. Am I missing some libvirt components/packages ? Or my assumption is incorrect and guests have to be shutdown manually? it's all SL 7 and guest are M$ regards P.

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[libvirt-users] Specify hard disk type (immutable) in the domain.xml file
by fdytr ytruy 24 Oct '14

24 Oct '14

P { margin-bottom: 0.21cm; }Hi! I'm using libvirt withVirtual Box. I have installed libvirt 0.10.2 and Virtual Box 4.1. I want to use "virsh define"to define my Virtual Box virtual machine. My question is: In my domain.xml, how can Ispecify that my hard disk is of type immutable/ multi attach etc. Can I use som kind oftag or attribute, something like this: <disk type='file'device='disk'> <sourcefile='/path/to/my/file.vdi'/> <target dev='hda'bus='ide'/> <type>immutable</type> </disk> In the domain.xml is it possible to specifythe path to my folder where I have my snapshot.vdi file? Thanks! LL

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