virt October 2009

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44 participants
49 discussions

f12 guest memory problems?
by Gianluca Cecchi 21 Oct '09

21 Oct '09

Hello, F11 x86_64 + rawvirt with latest updates I have a f12 near beta x86_64 kvm guest where now I'm doing "yum update" in it and basically I'm only in gui session without doing anything else Some strange things: - in virt-manager set 400Mb for VM (both the allocated, change, max allocation values... btw how to use them???) my guest sees only about 330Mb [gcecchi@localhost ~]$ free total used free shared buffers cached Mem: 344212 252944 91268 0 4268 26908 -/+ buffers/cache: 221768 122444 Swap: 950264 179092 771172 With dmesg on guest I see something like this: Memory: 329452k/409536k ...... 79696k reserved The 79696k reserved seems to fill the gap... is this a feature in f12 or based on it being a guest? - As you see, the guest is swapping about 180Mb, and actually it is very slowly responsive. Shouldn't it use some of buffers/cache before swapping so much? Is this expected during a yum update (only 34 packages for an overall of 72MB)? Or problem with F12 itself or virtualization layer? Thanks Gianluca

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Re: Oops
by Mark McLoughlin 21 Oct '09

21 Oct '09

Hi Gene, On Tue, 2009-10-20 at 19:39 -0400, Gene Czarcinski wrote: > F12 beta was available so I downloaded the DVD iso ... that was a waste of > bandwidth since it was identical to F12-Beta RC2. > > Anyway, I had already installed a couple of copies of RC2 into qemu-kvm guests > so it was time to install this on bare-metal. > > My test system already had F12-rawhide installed with all current updates but, > afterall, this is a test of the install ... so I did another install ... my > test system supports four, separate bootable systems (combinations of /boot > partitions and LVM logical volumes for root). > > OK, boot it up and start configuring it, updating (I did a DVD-only install), > etc. Well, one of the things this system does is run qemu-kvm so I had > selected Virtualization during the install. My guest disk images are all on a > separate logical volume which I mount on /.var/lib/libvirt/images but the > system definition/configuration files are separate. When I went to copy them > from the old system I found the was no place to copy them to ... /etc/libvirt/ > was missing. Further checking showed that the libvirt rpm was not installed > ... this is easy enought to fix but it should not have happened ... it should > have been installed when I selected virtualization. Oops, indeed. I've filed this here: https://bugzilla.redhat.com/530015 Thanks for finding this, it's a very serious issue that could have crept by unnoticed. Cheers, Mark.

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#529711 - qemu: could not open serial device 'pty'
by Gianluca Cecchi 20 Oct '09

20 Oct '09

On Mon, 19 Oct 2009 20:15:51 +0200 Gianluca Varisco wrote: > Hi guys, > > Am I the only one having this issue with qemu/KVM and rawhide? > > https://bugzilla.redhat.com/show_bug.cgi?id=529711 <https://bugzilla.redhat.com/show_bug.cgi?id=529711> > > (It is not a SELinux-related problem) > > Cheers, I would advise to also follow what written at link: https://fedoraproject.org/wiki/Reporting_virtualization_bugs In particular contents of virt-manager.log and posting output when setting LIBVIRT_DEBUG=1 btw I presume that also the version of virt-manager is the latest one, correct? HIH, Gianluca

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#529711 - qemu: could not open serial device 'pty'
by Gianluca Varisco 19 Oct '09

19 Oct '09

Hi guys, Am I the only one having this issue with qemu/KVM and rawhide? https://bugzilla.redhat.com/show_bug.cgi?id=529711 (It is not a SELinux-related problem) Cheers, -- Gianluca Varisco, RHCE | Office: +39 02 9737 4652 Red Hat Italia | Fax: +39 02 669 3111 Via Antonio Da Recanate 1 | Mobile: +39 333 574 0934 20124 Milano | eMail: gvarisco(a)redhat.com

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'eject' on a KVM guest
by Matthew Booth 19 Oct '09

19 Oct '09

What does the eject (to eject a CD) command do to a KVM guest? It succeeds, and the result is that the device can no longer be mounted. However, looking at the domain XML reveals it hasn't disconnected the backing file. Matt -- Matthew Booth, RHCA, RHCSS Red Hat Engineering, Virtualisation Team M: +44 (0)7977 267231 GPG ID: D33C3490 GPG FPR: 3733 612D 2D05 5458 8A8A 1600 3441 EA19 D33C 3490

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how to edit dhcp configuration
by Pavel Lisy 19 Oct '09

19 Oct '09

Hello I want to set fixed IP for host (from MAC address) in dhcp. How can I do it through libvirt configuration? There is not possibility set it in virt-manager. I can edit manually ldapnet.xml (ldapnet is name of my network) but: 1. question: Where is right place to edit it: /etc/libvirt/qemu/networks/ldapnet.xml or /var/lib/libvirt/network/ldapnet.xml (after reboot one file replaces other but which direction but I didn't find which direction) 2. question: How can I propagate this changes? Neither /etc/init.d/libvirtd reload /etc/init.d/libvirtd restart changes dnsmasq settings. It is done only during reboot, why? 3. I've found this workaround: * kill dnsmasq process for this settings * start dnsmasq with new settings, ex. .... --dhcp-host 52:54:00:22:a7:76,ldap-m1.ldapnet.tmapy.cz,192.168.241.101 Is it way how to do it through libvirt utility? Pavel -- Pavel Lisy <pavel.lisy(a)gmail.com>

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Re: nagios-virt: configure: error: Cannot find `nagios' program
by Richard W.M. Jones 16 Oct '09

16 Oct '09

On Fri, Oct 16, 2009 at 11:39:38AM +0200, Stephane Grand wrote: > Hello, > > I've found your web page about nagios-virt (http://et.redhat.com/~rjones/nagios-virt/) This tools interesting me to supervise servers and vm. > > Unfortunately, I can't test it. Here is error message I got when I execute "./configure" > > [root] # ./configure > ... > checking for stdint.h... yes > checking for unistd.h... yes > checking libvirt/libvirt.h usability... yes > checking libvirt/libvirt.h presence... yes > checking for libvirt/libvirt.h... yes > checking for virConnectGetCapabilities... yes > checking for nagios... no > configure: error: Cannot find `nagios' program > > I've retried this command with others options but I got the same error message Does the 'nagios' command exist? Is it on the $PATH? Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://et.redhat.com/~rjones/libguestfs/ See what it can do: http://et.redhat.com/~rjones/libguestfs/recipes.html

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Re: Re: nagios-virt: configure: error: Cannot find `nagios' program
by Stephane Grand 16 Oct '09

16 Oct '09

Thank you for the answer. Here is what I have done to follow the installation process. [root] # PATH=$PATH:/var/supervision/nagios/bin/ [root] # ./configure --with-nagios-configdir=/var/supervision/nagios/etc [root] # make [root] # ./nagios-virt config PACKAGE_NAME nagios-virt PACKAGE_VERSION 0.2.0 NAGIOS_CONFIGDIR /var/supervision/nagios/etc/ NV_DATADIR /usr/local/share/nagios-virt-0.2.0 ==>But I've got another problem. [root] # ./nagios-virt install Installing virt-library.cfg in /var/supervision/nagios/etc/ ... Installing /var/supervision/nagios/etc//commands.cfg ... Warning: could not install /var/supervision/nagios/etc//commands.cfg This file from the standard Nagios distribution is required in order for nagios-virt to work correctly. Installing virt-hosts.cfg in /var/supervision/nagios/etc/ ... virConnectNumOfDomains: failed Why this command can not install "commands.cfg" file ? Thank you. Stephane ======================================== Date du message : oct. 16 2009, 12:05 PM De : "Richard W.M. Jones" <rjones(a)redhat.com> A : "Stephane Grand" <stephane.grand(a)atosorigin.com>, fedora-virt(a)redhat.com Copie : Sujet : Re: nagios-virt: configure: error: Cannot find `nagios' program On Fri, Oct 16, 2009 at 11:39:38AM +0200, Stephane Grand wrote: > Hello, > > I've found your web page about nagios-virt (http://et.redhat.com/~rjones/nagios-virt/) This tools interesting me to supervise servers and vm. > > Unfortunately, I can't test it. Here is error message I got when I execute "./configure" > > [root] # ./configure > ... > checking for stdint.h... yes > checking for unistd.h... yes > checking libvirt/libvirt.h usability... yes > checking libvirt/libvirt.h presence... yes > checking for libvirt/libvirt.h... yes > checking for virConnectGetCapabilities... yes > checking for nagios... no > configure: error: Cannot find `nagios' program > > I've retried this command with others options but I got the same error message Does the 'nagios' command exist? Is it on the $PATH? Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://et.redhat.com/~rjones/libguestfs/ See what it can do: http://et.redhat.com/~rjones/libguestfs/recipes.html ----------------------- Atos Origin Stéphane Grand Open Source Center dcen-net-grand.consultant(a)dgfip.finances.gouv.fr

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USB passthrough and disconnect
by Gianluca Cecchi 15 Oct '09

15 Oct '09

Hello, following the instructions at http://www.redhat.com/archives/fedora-virt/2009-June/msg00182.html I'm able to attach an USB key to my Windows XP SP3 guest. More better, I'm able to attach and use it with the guest already started. Very good! (Actually I don't have SElinux enabled so I skipped what related to it ) The doubt is, when in Windows I then safely remove the key and get the ok msg from the os, if I try to hot remove the USB device in details windows of the guest I receive the message that will be effective after reboot. Is this expected and the hot unplug a feature next to come, or do I miss anything in correct way to do things? My sw versions for host are F11 x86_64 with up2date rawvirt repo: libvirt-0.7.1-11.fc11.x86_64 qemu-kvm-0.11.0-6.fc11.x86_64 virt-manager-0.8.0-7.fc11.noarch Suppose the message is correct behaviour based on current state of things, what would be correct approach if during a vm session I use several usb keys for example? 1) insert first usb key in host 2) add hw of first usb key in details tab of guest 3) use it in guest and at the end disconnect it from inside guest OS 4) remove hw in details tab of guest; confirming that this will overwrite any othe rchanges occured in guest config.... 5) remove key form host usb plug 6) insert second usb key in host 7) add hw of second usb key in details tab of guest 8) use it in guest and at the end disconnect it from inside guest OS 9) ? If I do same as 4 do I loose the action made in 4) ?? Do I have to remove more hw components together only at the end? Any removal will let forget the previous ones? It seems not clear to me this message about " This device could not be removed from the running machine. Would you like to remove the device after the next VM shutdown? Warning: this will overwrite any other changes that require a VM reboot. " This is true for more than one usb key, but also for more than one device in general.... Thanks in advance, Gianluca

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status of guest not well visible when selected
by Gianluca Cecchi 13 Oct '09

13 Oct '09

So all is working like a charm and I have to scale to aesthetics.... ;-) With latest rawvirt repo on F11, when I have a guest selected in virt-manager gui, the current status of it (Running vs Shutoff) is pretty difficult to notice.... Ok, there is the play symbol inside the terminal icon but probably a black color for the state of the guest, at least when selected, would be more readable. Planning to scratch these two hosts of mine from F11 + rawvirt to F12 Beta... any insights/suggestions? Preupgrade option viable in your opinion? Bye and thanks, Gianluca

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virt October 2009