Re: [libvirt-users] Xen PVH Support in libvirt
On 03/13/2018 06:10 AM, Tizian Lamatsch wrote: Hello @ all, i wonder if there is any support for Xen PVH (https://wiki.xen.org/wiki/Xen_Project_Software_Overview) within libvirt. No, PVH is currently not supported in the libvirt libxl driver. If i parse a xen native domU config file with 'virsh domxml-from-native' in which i set type='pvh' it changes it in the libvirt xml output to normal pv. Also the docs of libvirt do not state something like pvh. I am currently running Xen 4.10.0 with LibVirt 4.0.0. If it is not possible at the moment, can you please tell if this is a planned feature of libvirt? Support for PVH is on a very long todo list. I'm not sure when I'll get to it, but patches are welcome. FYI, Marek provided patches [0] to support the Xen community's first attempt at PVH (aka PVHv1, aka HVM lite), but thankfully those were never merged since PVHv1 is dead. In the meantime, no one has added support for the PVH mode ultimately embraced (aka PVHv2) by the Xen community. Regards, Jim [0] https://www.redhat.com/archives/libvir-list/2016-August/msg00376.html ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Re: [libvirt-users] Specify DNS and gateway for dnsmasq
On 03/13/2018 11:08 AM, Gionatan Danti wrote: > On 13/03/2018 15:30, Michal Privoznik wrote:> The default GW depends on > the IP address you assigned to your network: >> >> >> >> This says the default GW is 192.168.122.1/24. However, you can insert >> other routes too: >> >> ...however this wouldn't be of use to you - the routes listed in a libvirt network are routes that are added on the *host*, not on the guest. (these are used when there is a network behind a guest that the host can only access via that guest). >> >> For handling DNS, you need to focus on element. For instance, to >> set a different forwarder than GW: >> >> >> >> > > For NATed/routed networks, sure. However, I have an isolated network > like that (without the "forward" element): We don't want DNS requests to be forwarded by dnsmasq from an isolated network - forwarded DNS requests and responses can be used as a clandestine medium for communicating outside the guest (we actually had a bug report about this). libvirt's virtual networks are intended to be a simple way to setup the most common networking scenario. It sounds like you're beyond that, so you probably should do your own network setup on the host outside of libvirt. A libvirt virtual network is really just the combination of a bridge device, a dnsmasq instance + config, some iptables rules, and optionally some routes. > > > net1 > dcf5c09b-dcb6-4fd3-86b8-6312a7b94bf6 > > > > > > > > > > > When the client asks for an IP via DHCP, it obtain a valid IP address > but *no* gateway. Is it the expected behavior for an isolated network? > From my understanding, network isolation is accomplished by firewall > rules in the FORWARD table, rather than by not assigning the gateway IP > address to clients. It does both of those things (no gateway combined with iptables rules to prevent traffic from being forwarded from the bridge). Why set a default gateway when 1) it can't be used and 2) it may conflict with the default gateway set on a 2nd interface in the guest that *can* be used to reach outside the host? (a common use of an isolated network is to to contain inter-guest communication between guests that have 2nd interfaces used for communication with the outside). ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Re: [libvirt-users] Resource control is not supported on this host
On Tue, Mar 13, 2018 at 05:13:52PM +0100, Peter Krempa wrote: > On Tue, Mar 13, 2018 at 15:34:00 +0100, Michal Privoznik wrote: > > On 03/13/2018 09:51 AM, Allence wrote: > > > Libvirt release version V4.1.0 > > > It add a element is cachetune > > > After we add this, We can use host-cpu-cache > > > But when i add it, my host get a error message: > > > "Resource control is not supported on this host" > > > Why? > > > > For Cache Allocation Technology you need support at CPU hardware level. > > Currently, only less than dozen CPUs support it (all server level Xeons): > > > > https://www.intel.com/content/www/us/en/communications/cache-monitoring-cache-allocation-technologies.html#xeoncmtcat > > Also besides that, the feature depends on a kernel feature which was > broken upstream and deemed unusable and thus reverted. Until libvirt is > rewritten to use the new resource control interface, the feature will > not work with new kernels. IIUC, that only applies to the perf stuff for reporting cache usage of a VM. The reporter here was trying to use the cache allocation stuff for partitioning which AFAIK hasn't changed it userspace API Regards, Daniel -- |: https://berrange.com -o-https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o-https://fstop138.berrange.com :| |: https://entangle-photo.org-o-https://www.instagram.com/dberrange :| ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Re: [libvirt-users] Resource control is not supported on this host
On Tue, Mar 13, 2018 at 15:34:00 +0100, Michal Privoznik wrote: > On 03/13/2018 09:51 AM, Allence wrote: > > Libvirt release version V4.1.0 > > It add a element is cachetune > > After we add this, We can use host-cpu-cache > > But when i add it, my host get a error message: > > "Resource control is not supported on this host" > > Why? > > For Cache Allocation Technology you need support at CPU hardware level. > Currently, only less than dozen CPUs support it (all server level Xeons): > > https://www.intel.com/content/www/us/en/communications/cache-monitoring-cache-allocation-technologies.html#xeoncmtcat Also besides that, the feature depends on a kernel feature which was broken upstream and deemed unusable and thus reverted. Until libvirt is rewritten to use the new resource control interface, the feature will not work with new kernels. signature.asc Description: PGP signature ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Re: [libvirt-users] Specify DNS and gateway for dnsmasq
On 13/03/2018 15:30, Michal Privoznik wrote:> The default GW depends on the IP address you assigned to your network: This says the default GW is 192.168.122.1/24. However, you can insert other routes too: For handling DNS, you need to focus on element. For instance, to set a different forwarder than GW: For NATed/routed networks, sure. However, I have an isolated network like that (without the "forward" element): net1 dcf5c09b-dcb6-4fd3-86b8-6312a7b94bf6 When the client asks for an IP via DHCP, it obtain a valid IP address but *no* gateway. Is it the expected behavior for an isolated network? From my understanding, network isolation is accomplished by firewall rules in the FORWARD table, rather than by not assigning the gateway IP address to clients. No, that was just a proposal. RFC, a discussion how should we implement some special features of DHCP. Those are not patches and in fact patches implementing that were never merged. Michal Ok, thank you Michal. -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.da...@assyoma.it - i...@assyoma.it GPG public key ID: FF5F32A8 ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Re: [libvirt-users] Resource control is not supported on this host
On 03/13/2018 09:51 AM, Allence wrote: > Libvirt release version V4.1.0 > It add a element is cachetune > After we add this, We can use host-cpu-cache > But when i add it, my host get a error message: > "Resource control is not supported on this host" > Why? For Cache Allocation Technology you need support at CPU hardware level. Currently, only less than dozen CPUs support it (all server level Xeons): https://www.intel.com/content/www/us/en/communications/cache-monitoring-cache-allocation-technologies.html#xeoncmtcat Michal ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Re: [libvirt-users] Specify DNS and gateway for dnsmasq
On 03/12/2018 06:45 PM, Gionatan Danti wrote: > Hi all, > how I can set dhcp options as DNS, gateway, etc in libvirt's network > definitions? The default GW depends on the IP address you assigned to your network: This says the default GW is 192.168.122.1/24. However, you can insert other routes too: For handling DNS, you need to focus on element. For instance, to set a different forwarder than GW: It's all documented here: https://libvirt.org/formatnetwork.html#elementsStaticroute and in the subsequent section. > > From what I read here[1], I can use the tag. However, I can not > find nothing on libvirt official documentation. No, that was just a proposal. RFC, a discussion how should we implement some special features of DHCP. Those are not patches and in fact patches implementing that were never merged. Michal ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
[libvirt-users] auto propagate interface status change
Hello, I'm trying to automatically pass interface status changes (e.g. LAN cable connection/disconnection, ) to a QEMU Debian virt, but the status in the virt is always 'up' (i.e. 'virsh domif-getlink 3 macvtap0' == up). I'v tried setting 'virsh domif-setlink 3 macvtap1 up' or down, which works (i.e. domif-getlink==down). But I want that state to be automatically propagated to the virt. The only thing I found after hours of searching was "Default behavior if [..] unspecified is to have the link state up" [2]. Do I miss something, or is this simply not integrated?? Best, John On the host this is what I observed: -- ip link show|grep enp1s0 3: enp1s0: mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000 19: macvtap1@enp1s0: mtu 1500 qdisc pfifo_fast state LOWERLAYERDOWN mode DEFAULT group default qlen 500 -- virsh domiflist 3 setlocale: No such file or directory Interface Type Source Model MAC - macvtap0 direct enp3s0 virtio 00:30:d6:19:4c:8c macvtap1 direct enp1s0 virtio 00:30:d6:19:2a:2d vnet5 network vmnet0 virtio 52:54:00:dc:14:e4 -- and virsh domif-getlink 3 macvtap0 macvtap0 up Following are stats concerning to the bug report how to [1]: The version number of the libvirt build, or SHA1 of the GIT commit virsh --version -> 3.0.0 ii gir1.2-libvirt-glib-1.0:amd64 1.0.0-1 amd64 GObject introspection files for the libvirt-glib library ii libvirt-clients 3.0.0-4+deb9u1 amd64 Programs for the libvirt library ii libvirt-daemon 3.0.0-4+deb9u1 amd64 Virtualization daemon ii libvirt-daemon-system 3.0.0-4+deb9u1 amd64 Libvirt daemon configuration files ii libvirt-glib-1.0-0:amd64 1.0.0-1 amd64 libvirt GLib and GObject mapping library ii libvirt0 3.0.0-4+deb9u1 amd64 library for interfacing with different virtualization systems ii python-libvirt 3.0.0-2 amd64 libvirt Python bindings ii qemu-kvm 1:2.8+dfsg-6+deb9u3 amd64 QEMU Full virtualization on x86 hardware ii virt-manager 1:1.4.0-5 all desktop application for managing virtual machines ii virtinst 1:1.4.0-5 all Programs to create and clone virtual machines The hardware architecture being used x86_64 The name of the hypervisor (Xen, QEMU, KVM) QEMU The XML config of the guest domain if relevant For QEMU/KVM, the domain logfile from /var/log/libvirt/qemu [1] https://libvirt.org/bugs.html#quality [2] https://libvirt.org/formatdomain.html#elementLink ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
[libvirt-users] Xen PVH Support in libvirt
Hello @ all, i wonder if there is any support for Xen PVH (https://wiki.xen.org/wiki/Xen_Project_Software_Overview) within libvirt. If i parse a xen native domU config file with 'virsh domxml-from-native' in which i set type='pvh' it changes it in the libvirt xml output to normal pv. Also the docs of libvirt do not state something like pvh. I am currently running Xen 4.10.0 with LibVirt 4.0.0. If it is not possible at the moment, can you please tell if this is a planned feature of libvirt? Thanks in advance for your help! Best Regards, Tizian ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Re: [libvirt-users] libvirt connect vmware workstation fail
On Tue, Mar 13, 2018 at 03:56:30PM +0800, 吴金灿 wrote: > bash: vmwarews+ssh://jc@127.0.0.1/session: No such file or directory > [jc@te ~]$ virsh -c vmwarews+ssh://jc@127.0.0.1/session > 错误：连接到管理程序失败 > 错误：不支持的操作：ssh 连接驱动程序不支持在没有套接字路径的情况下连接到会话实例 > [jc@te ~]$ virsh -c vmwarews+ssh://root@127.0.0.1/session > 错误：连接到管理程序失败 > 错误：不支持的操作：ssh 连接驱动程序不支持在没有套接字路径的情况下连接到会话实例 > [jc@te ~]$ virsh -c vmwarews:///session > Segmentation fault (核心已转储) Please try running this last one under GDB to capture a stack trace. You'll need to make sure you have debug symbols installed if you're using a libvirt that's built by a distro. Regards, Daniel -- |: https://berrange.com -o-https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o-https://fstop138.berrange.com :| |: https://entangle-photo.org-o-https://www.instagram.com/dberrange :| ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
[libvirt-users] libvirt connect vmware workstation fail
bash: vmwarews+ssh://jc@127.0.0.1/session: No such file or directory [jc@te ~]$ virsh -c vmwarews+ssh://jc@127.0.0.1/session ssh [jc@te ~]$ virsh -c vmwarews+ssh://root@127.0.0.1/session ssh [jc@te ~]$ virsh -c vmwarews:///session Segmentation fault (??)___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
[libvirt-users] Resource control is not supported on this host
Libvirt release version V4.1.0 It add a element is cachetune After we add this, We can use host-cpu-cache But when i add it, my host get a error message: "Resource control is not supported on this host" Why? Following is my environment: kernel :4.1.5, libvirt :4.1.0 qemu :2.9 host :lfs-7.0 my add cachetune in xml: ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
