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1609 discussions

VMGL for centos and fedora
by Farkas Levente 29 Sep '07

29 Sep '07

hi, is there any plan to package and/or include VMGL in centos/fedora: http://www.cs.toronto.edu/~andreslc/xen-gl/ -- Levente "Si vis pacem para bellum!"

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kvm in testing
by Farkas Levente 19 Sep '07

19 Sep '07

hi, in testing the kvm version is kvm-kmod-36-2.2.6.18_8.1.1.el5.src.rpm shouldn't it be 36-2.2.6.18_8.1.10 or at least 36-2.2.6.18_8.1.8? it has reason or just a bug? thanks. -- Levente "Si vis pacem para bellum!"

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KVM-36
by Daniel de Kok 15 Sep '07

15 Sep '07

Hi all, KVM-36 is now in testing. Since KVM-37 has added new functionality (pic/lapic/ioapic) that could introduce regressions, this is the release that we will stick to (testing, extra if there are no serious regressions compared to kvm-35) for a while. Take care, Daniel

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open-vm-tools
by Karanbir Singh 13 Sep '07

13 Sep '07

hi, Just wondering if anyone had looked into http://open-vm-tools.sourceforge.net/ announced by vmware recently ? -- Karanbir Singh : http://www.karan.org/ : 2522219@icq

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Xen VMs on GFS
by Lars E. D. Jensen 10 Sep '07

10 Sep '07

Hello list I've installed cluster suite with 8 physical nodes, these are connected to a SAN using CLVM and AOE protocol. The cluster suite runs on the physical nodes/servers, in dom0. If I have to use GFS, where do I install this? What is the right approach to using GFS with Xen. I see 2 options: 1. I install GFS inside each domU (unprivileged domain, the actual VM). 2. I install GFS on CLVM volumes on dom0 and mount these partitions with domUs. Which of these options are possible ? Or maybe I have to ask, how do you do it ? :) Thanks Lars

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rpms for kvm on centos
by Farkas Levente 10 Sep '07

10 Sep '07

hi, for those of you who can't wait for the centos testing rpms i recompile a few packages for centos-5: https://www.lfarkas.org/linux/packages/centos/5/ there's no support for it and the centos repositories are always better then these packages:-) -- Levente "Si vis pacem para bellum!"

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Re: [kvm-devel] (long) kvm and virt-manager not ready for daily usage
by Farkas Levente 09 Sep '07

09 Sep '07

Anthony Liguori wrote: >>> saying that guest SMP isn't working for you? The host OS definitely >>> shouldn't crash. Can you be more specific about what configs you are >>> using? There was a host oops fixed in kvm-36 so upgrading may help you. >> exactly. i've got 4 phisical core (Intel Core 2 Quad) and i try to give >> 4 cpus for 2 guests and 2 cpus for a third guest and restart libvirtd. >> the result was that even the host system crash without any stack trace >> or kernel panic and only the hard reset helps. > > Could you try to reproduce the problem with kvm-36? Host crash bugs are > very important to fix especially one so easily reproducible. yes, when c5-testing will include kvm-36. i already recompile many rpms to be able to use the latest tools, but since kvm is in centos-extras i'd rather stay with that and don't mix packages. -- Levente "Si vis pacem para bellum!"

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qemu 0.9.0 in c5-testing
by Daniel de Kok 08 Sep '07

08 Sep '07

Hi all, A package for the qemu machine emulator/virtualizer is now available in CentOS testing for CentOS 5. qemu was added - Because the package contains qemu-img, a handy tool for creating and converting disk images (e.g. for KVM). - For full virtualization on i386 and x86_64 CPUs that don't have VT-X or AMD-V support. kqemu is required for optimal performance, we plan to provide a module package for kqemu in the near future. For the moment, testing can be oriented at using this (qemu-img in particular) in combination with KVM. Once the kqemu module packages are ready, we are also interested in qemu + kqemu testing results. Information on using the CentOS Testing repository can be found on the CentOS Wiki at: http://wiki.centos.org/Repositories Take care, Daniel

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(long) kvm and virt-manager not ready for daily usage
by Farkas Levente 08 Sep '07

08 Sep '07

hi, in the last 2 weeks we play a lot with our new server which we but to a our virtual server for the development and collect some very subjective experience. we use kvm and virt-manager, but sometimes i'm not really sure about the whether it's kvm or virt-manager problem so i collect them together. our system: MB: Intel S3000AHV CPU: Intel Core 2 Quad CPU Q6600 @ 2.40GHz RAM: 8GB CentOS 5 x86-64 host system with: kernel-2.6.18-8.1.8.el5 kmod-kvm-35-1.2.6.18_8.1.8.el5 kvm-35-1 libvirt-0.3.2-2 libvirt-python-0.3.2-2 python-virtinst-0.300.0-1 virt-manager-0.5.0-1 virt-top-0.3.2.5-1 virt-viewer-0.0.2-1 kvm is not ready for production use for many reason: it can't reboot which imho a very basic feature, what's more can't even shutdown/poweroff. the centos i386 guest are not able to shutdown on the x86_64 host (strange the x86_64 centos and the i586 mandrake-9 are able to shutdown) or what's seems to be more likely it's a random think. can't give 2GB ram to any guests not even 2, but 1.9999 is ok. what's more i've to discover this in the hard way virt-manager gives some strange error message (anyway none of the virt-manager's error message are useful, just strange stack trace without any kind of useful info). the host see as i've 4 cpu. i've got a change to gives more cpu to the guest, what's more they starts, but after a few minutes running the system crash. not just the guest os but the host os crash without any kind of info, log or any useful info what was the cause of it, but hard reset helps:-((( first of all it's serious problem, even if it's a known bug and documented somewhere (but there is not any kind of docs about neither kvm nor virt-manager/libvirt and what i can find that very limited), since all of the new hvm cpu (which is required for kvm) has more core, so the guest can't use the real power of the cpu this means i've to put a lots of guests with one virtual cpu to the host or currently can't exploit these cpus. libvirt not start the guest when the host started, not saved the state of the guests when stopped, when restarted all guest get into shutdown state. may be it's just libvirt but, but if kvm not able to save it's guest's state that it's a real pain. this behavior not acceptable in a real environment. in virt-manager can't modify virtual cpu number of the guests (virt-manager crash with another unusable stacks trace). it i modify the xml config file by hand i've to restart libvirt in order to read it. even if i just modify one guest's config, but as if i restart libvirtd the all other guest will be killed it's another nice feature. from vit-manager i can't assign swap partitions (and any other device to the guests) during guest creation. i precreate lvm partition on the host for root and swap to all of our guests (about 10) but it's a real pain to reload libvirtd (which kills all guests) to add a new disk to the guest which can be used as a swap or other partition. what's more it'd be useful to add swap partition during install. the same thing apply to cdrom too. if i made a mistake in the libvirtd xml config file, then i don't get any kind of error message just libvirt don't start the given guest. no error message service seems to start without error and don't know what was the reason that the guest not start (sometimes because syntactic error in the config file, sometimes kvm/qemu not support it eg more then 2gb mem). there are unwritten unix/linux tradition eg if there are error during a service startup report it some log file. if a service can't start without error then it not start at all eg. if i've apache with 5 virtual host but one of it's config has error then the whole httpd not started. it'd have to be the same with libvirt too. libvirt config file has all the features as qemu command line (if not it can't be used by advanced users)? but i don't know since there is not a reference docs for the config file. there is not a detailed reference docs about libvirtd config (and at the same time the gui not contains all the settings). for the the xml format is a bit redundant eg. "source dev", "target dev" why not just source and target, inside interface type='bridge' 'source bridge' why not just source (i've to modify two place when i'd like to switch from network to bride. ok these are just small cosmetic thing just mention. when create a new guest in virt-manager and reach the last page and press finish then most of the time (2 times from 3) i've got an error something like "can't connect to qemu" after i press ok and press again finish then it's able to create the new host (so always have to retry it). in virt-manager when a guest is shutdown and double-click on the guest and try to start it it's not possible. you've to select the guest in the main windows, right-click and start it. the new vnc based console is very unstable or just virt-manager not able to connect it. many times i double click on a guest in virt-manager i got the window can't connect to console while the guest are running. that's why i like to see again the serial console. we've got other virtual servers with xen and openvz, with has other problems but works. my conclusion is that currently kvm, libvirtd, virt-manager (et-mgmt-tools) seems very promising. but currently just in a very alpha stage using even in non mission critical but production environment still a very 'brave' decision. xen has a few years vantage, but it's at least usable in real environment. i'm on the these list and see what kind of problem you're working which is great but at the same it'd be useful to fix the most basic problems with these tools. just my 2c to these community. -- Levente "Si vis pacem para bellum!"

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virt-factory investigation
by Hristo Benev 07 Sep '07

07 Sep '07

Version 0.0.4 is out, but unfortunately unly for F7 According to: https://www.redhat.com/archives/et-mgmt-tools/2007-September/msg00040.html EL5 will be soon available. All depends on busrpc(AMQP) package - available only in f7 for now. So we need to wait even more.... ----------------------------------------------------------------- ЕЛА и направи свой сайт, намери нови приятели! WWW.ZOOM.BG

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