Re: [libvirt] Passing -no-kvm-irqchip to KVM/QEMU guests
Garry Dolley wrote: Hi Jim, Thanks for this suggestion, it worked like a charm! Now, while this is still a hacky way to solve this problem, would anyone be interested in seeing a patch that would either: 1) Allow one to append arbitrary command line arguments to the emulator, like: ... emulator/usr/bin/kvmemulator emulator_args-no-kvm-irqchip/emulator_args It's a feature request that's come up many times. Personally, I don't think it would be such a bad idea, but I know it's been rejected in the past, so maybe others can chime in with their reasoning. ... I don't like the name emulator_args much either, but just as an example. 2) Have an option in the XML file specifically for '-no-kvm-irqchip'; I'm not sure where it would go. Maybe under features, yet it isn't really a feature, more like lack of a feature ;) This one is probably worse off in terms of a feature request. The problem is that this is very qemu-specific, and the libvirt XML tries to stay pretty generic across hypervisor versions. Worse, qemu options come and go over time, so a couple of years from now, that option may not even exist anymore. But since the XML is part of the libvirt API, we would have to continually support it in libvirt forever. Suggestions welcome. I've been waiting to find some itch to scratch where I can contribute to libvirt code directly (instead of just doc patches), so this seems to fit the bill. There is this page on the libvirt wiki: http://wiki.libvirt.org/page/Todo, but I'll warn you that it is very out-of-date. If you see something on there that tickles your fancy, make sure to mail the list first asking if it's already done or in progress. -- Chris Lalancette -- Libvir-list mailing list Libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] Passing -no-kvm-irqchip to KVM/QEMU guests
On Sun, Sep 13, 2009 at 09:33:01PM -0400, Jim Paris wrote: Garry Dolley wrote: Dear libvirt, Is there a way to tell a KVM/QEMU guest managed by libvirt to start with the -no-kvm-irqchip argument? I have some FreeBSD 7 guests with timing issues, and if I try to start the VMs manually with -no-kvm-irqchip, the timing issues go away (the only known workaround right now). However, if the guest is managed by libvirt, I have found no way to pass this command line option. I'm running libvirt 0.6.4 on Ubuntu 9.04 As a hack, you can point the XML file to a wrapper script instead of the KVM binary, where the script would contain e.g.: #!/bin/sh exec /usr/bin/kvm $@ -no-kvm-irqchip Hi Jim, Thanks for this suggestion, it worked like a charm! Now, while this is still a hacky way to solve this problem, would anyone be interested in seeing a patch that would either: 1) Allow one to append arbitrary command line arguments to the emulator, like: ... emulator/usr/bin/kvmemulator emulator_args-no-kvm-irqchip/emulator_args ... I don't like the name emulator_args much either, but just as an example. 2) Have an option in the XML file specifically for '-no-kvm-irqchip'; I'm not sure where it would go. Maybe under features, yet it isn't really a feature, more like lack of a feature ;) Suggestions welcome. I've been waiting to find some itch to scratch where I can contribute to libvirt code directly (instead of just doc patches), so this seems to fit the bill. -- Garry Dolley ARP Networks, Inc. | http://www.arpnetworks.com | (818) 206-0181 Data center, VPS, and IP Transit solutions Member Los Angeles County REACT, Unit 336 | WQGK336 Blog http://scie.nti.st -- Libvir-list mailing list Libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
[libvirt] Passing -no-kvm-irqchip to KVM/QEMU guests
Dear libvirt, Is there a way to tell a KVM/QEMU guest managed by libvirt to start with the -no-kvm-irqchip argument? I have some FreeBSD 7 guests with timing issues, and if I try to start the VMs manually with -no-kvm-irqchip, the timing issues go away (the only known workaround right now). However, if the guest is managed by libvirt, I have found no way to pass this command line option. I'm running libvirt 0.6.4 on Ubuntu 9.04 Thoughts? -- Garry Dolley ARP Networks, Inc. | http://www.arpnetworks.com | (818) 206-0181 Data center, VPS, and IP Transit solutions Member Los Angeles County REACT, Unit 336 | WQGK336 Blog http://scie.nti.st -- Libvir-list mailing list Libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] Passing -no-kvm-irqchip to KVM/QEMU guests
Garry Dolley wrote: Dear libvirt, Is there a way to tell a KVM/QEMU guest managed by libvirt to start with the -no-kvm-irqchip argument? I have some FreeBSD 7 guests with timing issues, and if I try to start the VMs manually with -no-kvm-irqchip, the timing issues go away (the only known workaround right now). However, if the guest is managed by libvirt, I have found no way to pass this command line option. I'm running libvirt 0.6.4 on Ubuntu 9.04 As a hack, you can point the XML file to a wrapper script instead of the KVM binary, where the script would contain e.g.: #!/bin/sh exec /usr/bin/kvm $@ -no-kvm-irqchip -jim -- Libvir-list mailing list Libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
