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[libvirt-users] Libvirt fails on network disk with ISCSI protocol
by Fred Rolland 02 Aug '17

02 Aug '17

Hi, I am working on oVirt, and I am trying to run a VM with a network disk with ISCSI protocol ( the storage is on a Cinder server). Here is the disk XML I use: <disk device="disk" snapshot="no" type="network"> <address bus="0" controller="0" target="0" type="drive" unit="0" /> <source name="iqn.2010-10.org.openstack:volume-37fea687-040c-4a88-844c-117d1a90e9b2" protocol="iscsi"> <host name="10.35.0.20" port="3260" /> </source> <target bus="scsi" dev="sda" /> <boot order="1" /> <driver cache="none" error_policy="stop" io="threads" name="qemu" type="raw" /> </disk> I get the following error: libvirtError: internal error: process exited while connecting to monitor: 2017-08-02T14:38:58.378430Z qemu-kvm: -drive file=iscsi:// 10.35.0.20:3260/iqn.2010-10.org.openstack%3Avolume-37fea687-040c-4a88-844c-117d1a90e9b2,format=raw,if=none,id=drive-scsi0-0-0-0,cache=none,werror=stop,rerror=stop,aio=threads: Failed to parse URL : iscsi:// 10.35.0.20:3260/iqn.2010-10.org.openstack%3Avolume-37fea687-040c-4a88-844c-117d1a90e9b2 It seems that the ':' character got changed on the way to %3A. Any suggestions on the root cause of this issue? Thanks, Fred Rolland

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[libvirt-users] Regarding KVM-Qemu Migration code
by Aditya Bhardwaj 02 Aug '17

02 Aug '17

Respected Sir, I need to modify kvm-qemu migration code. Please tell me where i can find the code. -- *Thank youWith Regards:Aditya Bhardwaj* *Dept. of CSE * *NITTTR (Ministry of MHRD, Govt. of India)* *Sector-26, **Chandigarh - 160019 INDIA* https://scholar.google.co.in/citations?user=rEHhEnEAAAAJ&hl=en

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[libvirt-users] Changing <on_reboot> in the domain XML file
by Sam Varshavchik 31 Jul '17

31 Jul '17

Using virsh edit, I made the following change to the domain XML file: <on_reboot>destroy</on_reboot> But this appears to do nothing. The VM guest is Windows 10, and when directing it to reboot, it still reboots, instead of shutting off the VM. I was trying to work around some kind of a bug, somewhere, that started happening after updating to Fedora 26 and qemu 2.9, where a reboot throws my Windows 10 guests into some kind of a bizarre automatic recovery mode, which then claims that the hard drive is hosed. It's not, and a forced shutdown followed by a cold start boots everything back up like nothing has happened (which I didn't figure out until reinstalling one of the guests, sigh...), and everything is peachy once again. So, anyway, I was trying to figure out a way around it, and <on_reboot>destroy</on-reboot> seemed to be exactly what I was looking for. Perusing qemu's man page, it seems that this option should result in a -no- reboot option getting added to qemu's command line. But, looking at the actual command line, after starting the VM, it's nowhere to be seen. A bit more Google-fu found this: http://blog.vmsplice.net/2011/04/how-to-pass-qemu-command-line-options.html And I manually added a -no-reboot option to the domain XML file that way. And you know what? After doing that, telling Windows 10 to reboot simply shuts off the VM. Wonderful. But that still leaves me wondering: what's up with the <on_reboot> tag? Why didn't it work? Is this a PEBCAK, or something worth throwing a ticket for?

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[libvirt-users] libvirt virDomainDestroy
by llilulu 31 Jul '17

31 Jul '17

When stop a qemu vm via libvirt api, I call virDomainShutdown, I can seen the vm shutdown process, But I call virDomainDestroyFlags with VIR_DOMAIN_DESTROY_GRACEFULL ,I can't seen the vm shutdown process, virDomainDestroyFlags with VIR_DOMAIN_DESTROY_GRACEFULL is gave vm driver process a SIGTERM , how vm driver process SIGTERM signal (like qemu). Thanks

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[libvirt-users] Libvirt and dnsmasq
by Erik Lukács 31 Jul '17

31 Jul '17

Hi Guys, I do. have a question on libvirt according dnsmasq. according to the Documentation libvirt initiates for each virtual Interface a dnsmasq process which listens on that interface. Now my Setup Looks like this: in Order to rebuild a Customers Setup i created a vm with several Interfaces ( machine1) and an API Server with two Interfaces ( machine2). Two of these interfaces net_ext and net_int are available on both vms. One of That Interface is meant for Internet (net_ext) the other other for intercommunication (net_int). The "Internet" network is Routed via another virtual Interface (net_infra) which is unavailable on both vms. On that network my outgoing Gateway, ntp and DNS Server is configured in the vms. This makes me crazy due to the fact that dns resolution on machine1 does not work until I either kill the dnsmasq process which listens on net_infra (this makes the system-wide dnsmasq also react on that interface) or I make config-changes mentioned below (but that persists only until the host is rebooted. Both vms and the host run with centos7 My problem now is, that dnsmasq is Running on every virtual interface. And every process only listens on its own interface. All changes are undone/reset by reboot. Of course during runtime (and with restart) i can add to "Interface=net_infra,net_ext" which temporarily fixes My Problem. Another thing I could do is killing the dnsmasq process on the interface and use the hosts own dnsmasq config. Without These changes on DNS resolution doesn't work within my machines ( as written DNS MUST be set on an ip on net_infra, which must not be bound to both vms). So my question: How do i einher configure dnsmasq Not to Start for each Interface on libvirt-start or how do i configure the dnsmasq-config for net_infra also to listen On net_ext. chattr +i /var/lib/libvirt/dnsmasq/net_infra.conf is Not an Option! Thanks in advance! Erik

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Re: [libvirt-users] Xen died - Fedora upgrade from 21 to 26
by G Crowe 27 Jul '17

27 Jul '17

My server was installed as a "minimal install" in text mode, so there may be some difference between my setup and your laptop. Are you able to email the output of "systemctl list-unit-files" to me so that I can see what services are enabled? I tried installing a couple of the other drivers mentioned in the log file... # dnf install libvirt-daemon-driver-lxc # dnf install libvirt-daemon-driver-uml # dnf install libvirt-daemon-driver-vbox But this made no difference. I then tried disabling xenconsole.service, which fixed some things and broke others. - reboots now work (I don't have to hard power cycle - it was locking up when trying to kill both the libvirtd and the xenconsole services) - "virsh list" now works (shows an empty list) - "xl list" now gives an error instead of just locking up (the same error as if libvirtd wasn't running - see below). - "virsh define vmtest.xml" now gives an error (the same error that it gave before I installed libvirt-daemon-driver-libxl - see below) - libvirtd.service starts fine on bootup. Manually restarting libvirtd does not resolve the above problems. Note that on my Fedora 21 machine, it has libvirtd.service and xendomains.service and xenconsoled.service all running simultaneously, and it has been running for years without issues (even on reboots) Is there any documentation on what needs to be installed and/or running to use Xen, and what conflicts? Or is there any documentation on how Xen should be installed for the current version of Fedora? Thank you GC # virsh define vmtest.xml error: Failed to define domain from vmtest.xml error: invalid argument: could not find capabilities for arch=x86_64 domaintype=xen # xl list xencall: error: Could not obtain handle on privileged command interface: No such file or directory libxl: error: libxl.c:108:libxl_ctx_alloc: cannot open libxc handle: No such file or directory cannot init xl context On 27/07/2017 11:40 AM, Alvin Starr wrote: > I just tried my laptop and booted xen and can virsh list and xl seem > to work. > > > On 07/26/2017 06:27 PM, G Crowe wrote: >> Alvin, >> Thanks for that. I disabled the xendomains service (I had to do >> it twice, as it seemed to re-enable itself after the first reboot) >> and it now starts libvirtd automatically on startup. >> >> However, all is not well! >> "xl list" and "virsh list" will just hang >> "systemctl stop libvirtd" just hangs and after this "ps aux" lists >> the process as defunct >> root 673 0.0 0.0 0 0 ? Zsl 08:04 0:00 >> [libvirtd] <defunct> >> "kill -KILL 673" has no effect >> "shutdown -r now" also hangs (I have to physically power off the >> machine) irrespectively of whether I have tried to stop the service >> before shutdown or not. >> >> None of this happened yesterday when I manually started libvirtd >> after bootup (when xendomains was still running). >> >> The logs show nothing in error or warning category, just a heap of >> info (I have the logs set to level 2). Is there anything in >> particular that I should be looking for in the logs? >> >> >> >> Regarding the use of a VM to access the host in a remote location... >> I had considered this and there was little choice. The machine is on >> the end of a VDSL line and was installed to consolidate a few servers >> in that location in order to save power. I figured that automatically >> starting a VM that ran the networking was not much more risk than a >> physical server that had to start up its networking, and that has (so >> far) proven to be true with all of the remote restarts & power >> outages to date. The only other option is an expensive second link to >> the host, and I've decided to live with the possibility of having to >> talk someone through a restart over the phone rather than go down >> that route. >> >> Interestingly, with the NBN in Australia (the country-wide rollout of >> fibre or broadband to every premises) they have effectively converted >> all our phone lines to VoIP. This has resulted in the old physical >> landline now requiring one of the VMs to be running as well, so if I >> ever need to talk someone through a restart it will need to be on a >> mobile phone. >> >> >> Thank you >> >> GC >> >> >> On 27/07/2017 5:47 AM, Alvin Starr wrote: >>> I addressed the fix to Jim but I should have addressed it to you. >>> >>> >>> Try systemctl disable xendomains.service >>> >>> It is conflicting with libvirtd.service. >>> I found it by using >>> "systemd-analyze dot libvirtd.service | dot -Tgif > /tmp/dot1.gif" >>> >>> >>> It looks like libvirt-daemon-driver-xen or >>> libvirt-daemon-driver-libxl should disable the xendomains.service >>> >>> >>> On 07/26/2017 06:46 AM, G Crowe wrote: >>>> Jim, >>>> Thanks for that, I had manually installed >>>> libvirt-daemon-driver-xen, but also needed to install >>>> libvirt-daemon-driver-libxl. I can now create VMs and convert >>>> config formats. >>>> >>>> However the daemon still fails to start on bootup. It starts fine >>>> when I manually start it with "systemctl start libvirtd" but >>>> setting it to autostart with "systemctl enable libvirtd" seems to >>>> have no effect. When I look at the status, it tells me that the >>>> service is "enabled" which means that it starts on bootup (well, >>>> that's what it means for any other service). >>>> >>>> This is rather critical on this PC, as it has unattended restarts >>>> and the VPN/routing is done in one of the VMs (i.e. I can't get to >>>> it unless it auto-starts at least one VM). >>>> >>>> Unfortunatley there is nothing appearing in the libvirtd log over a >>>> reboot to help diagnose. >>>> >>>> Any suggestions? >>>> >>>> >>>> Thank you >>>> >>>> GC >>>> >>>> >>>> [root@testhost ~]# systemctl status libvirtd >>>> ● libvirtd.service - Virtualization daemon >>>> Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; >>>> enabled; vendor preset: enabled) >>>> Active: inactive (dead) >>>> Docs: man:libvirtd(8) >>>> http://libvirt.org >>>> >>>> >>>> >>>> >>>> On 25/07/2017 1:20 AM, Jim Fehlig wrote: >>>>> On 07/23/2017 04:25 PM, G Crowe wrote: >>>>>> Hi, >>>>>> I am trying to upgrade my Xen host (Dom0) and are having >>>>>> troubles getting it to work. >>>>>> >>>>>> I think that it has booted into a kernel that supports Xen >>>>>> (running 'xl info' does list some Xen capabilities), but I have >>>>>> three problems (that I have found so far). >>>>>> >>>>>> Firstly, the "libvirtd" daemon doesn't start on bootup (and as a >>>>>> result all 'virsh' commands fail). It is set to auto-start >>>>>> (systemctl enable libvirtd), and can be manually started >>>>>> (systemctl start libvirtd), but it will not auto-start on reboot. >>>>>> >>>>>> Secondly, Once I have manually started libvirtd, when I try to >>>>>> define a domain it gives me an error "could not find capabilities >>>>>> for arch=x86_64 domaintype=xen" and I haven't yet been able to >>>>>> define any domains. This domain type works fine on Fedora 21. >>>>>> >>>>>> Thirdly, I am unable to convert to/from xml config format, it >>>>>> gives me the error "error: invalid argument: unsupported config >>>>>> type xen-xl" however the format "xen-xl" works fine on the Fedora >>>>>> 21 machine. >>>>> >>>>> It sounds like the libvirt libxl driver is not loaded. Is the >>>>> libvirt-daemon-driver-libxl package installed? If it's installed, >>>>> enabling debug logging in libvirtd can provide hints why it is not >>>>> loading >>>>> >>>>> http://libvirt.org/logging.html >>>>> >>>>> Regards, >>>>> Jim >>>>> >>>>>> >>>>>> I had these same issues when I tried to upgrade to Fedora 25 and >>>>>> assumed that something had been broken and so abandoned further >>>>>> attempts to upgrade, however since Fedora 26 is the same I am now >>>>>> assuming that I have stuffed something up myself (or missed >>>>>> something). >>>>>> >>>>>> Fedora 21 uses kernel 3.19.3 and xen 4.4.1 >>>>>> Fedora 26 uses kernel 4.11.8 and xen 4.8.1 >>>>>> >>>>>> I have tried following the info on >>>>>> https://wiki.xen.org/wiki/Fedora_Host_Installation but it appears >>>>>> to be out of date now (I used this site when I started using Xen >>>>>> under Fedora 19, and when I upgraded to Fedora 21) >>>>>> >>>>>> Does anyone have any suggestions? outputs from "xl info" and the >>>>>> domain config are below. I have also tried disabling SELinux, but >>>>>> it made no difference. >>>>>> >>>>>> >>>>>> Thanks >>>>>> >>>>>> GC >>>>>> >>>>>> ----------------------------------------------- >>>>>> On the fedora 26 box..... >>>>>> # xl info >>>>>> host : family.mydomain.mytld >>>>>> release : 4.11.8-300.fc26.x86_64 >>>>>> version : #1 SMP Thu Jun 29 20:09:48 UTC 2017 >>>>>> machine : x86_64 >>>>>> nr_cpus : 4 >>>>>> max_cpu_id : 3 >>>>>> nr_nodes : 1 >>>>>> cores_per_socket : 4 >>>>>> threads_per_core : 1 >>>>>> cpu_mhz : 2712 >>>>>> hw_caps : >>>>>> b7ebfbff:77faf3bf:2c100800:00000121:0000000f:009c67af:00000000:00000100 >>>>>> >>>>>> virt_caps : hvm hvm_directio >>>>>> total_memory : 8072 >>>>>> free_memory : 128 >>>>>> sharing_freed_memory : 0 >>>>>> sharing_used_memory : 0 >>>>>> outstanding_claims : 0 >>>>>> free_cpus : 0 >>>>>> xen_major : 4 >>>>>> xen_minor : 8 >>>>>> xen_extra : .1 >>>>>> xen_version : 4.8.1 >>>>>> xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p >>>>>> hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 >>>>>> xen_scheduler : credit >>>>>> xen_pagesize : 4096 >>>>>> platform_params : virt_start=0xffff800000000000 >>>>>> xen_changeset : >>>>>> xen_commandline : placeholder >>>>>> cc_compiler : gcc (GCC) 7.0.1 20170421 (Red Hat >>>>>> 7.0.1-0.15) >>>>>> cc_compile_by : mockbuild >>>>>> cc_compile_domain : [unknown] >>>>>> cc_compile_date : Wed May 3 21:23:49 UTC 2017 >>>>>> build_id : 1c6e5a40165e05837303942b54757ae1f2d5033d >>>>>> xend_config_format : 4 >>>>>> >>>>>> --------------------------------------------------- >>>>>> # cat vmtest.xml >>>>>> <domain type='xen' id='21'> >>>>>> <name>testVM</name> >>>>>> <memory unit='KiB'>2097152</memory> >>>>>> <currentMemory unit='KiB'>2097152</currentMemory> >>>>>> <vcpu placement='static'>1</vcpu> >>>>>> <os> >>>>>> <type arch='x86_64' machine='xenfv'>hvm</type> >>>>>> <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader> >>>>>> <boot dev='network'/> >>>>>> </os> >>>>>> <features> >>>>>> <acpi/> >>>>>> <apic/> >>>>>> <pae/> >>>>>> </features> >>>>>> <clock offset='variable' adjustment='0' basis='utc'/> >>>>>> <on_poweroff>destroy</on_poweroff> >>>>>> <on_reboot>restart</on_reboot> >>>>>> <on_crash>restart</on_crash> >>>>>> <devices> >>>>>> <interface type='bridge'> >>>>>> <mac address='02:02:00:03:00:00'/> >>>>>> <source bridge='enp1s0'/> >>>>>> <script path='vif-bridge'/> >>>>>> </interface> >>>>>> <serial type='pty'> >>>>>> <target port='0'/> >>>>>> </serial> >>>>>> <console type='pty'> >>>>>> <target type='serial' port='0'/> >>>>>> </console> >>>>>> <input type='mouse' bus='ps2'/> >>>>>> <input type='keyboard' bus='ps2'/> >>>>>> <graphics type='vnc' port='5901' autoport='no' >>>>>> listen='192.168.131.54'> >>>>>> <listen type='address' address='192.168.131.54'/> >>>>>> </graphics> >>>>>> </devices> >>>>>> </domain> >>>>>> >>>>>> -------------------------------------- >>>>>> >>>>>> _______________________________________________ >>>>>> libvirt-users mailing list >>>>>> libvirt-users(a)redhat.com >>>>>> https://www.redhat.com/mailman/listinfo/libvirt-users >>>>>> >>>>> >>>> >>>> _______________________________________________ >>>> libvirt-users mailing list >>>> libvirt-users(a)redhat.com >>>> https://www.redhat.com/mailman/listinfo/libvirt-users >>> >> >

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Re: [libvirt-users] Xen died - Fedora upgrade from 21 to 26
by G Crowe 27 Jul '17

27 Jul '17

Alvin, Thanks for that. I disabled the xendomains service (I had to do it twice, as it seemed to re-enable itself after the first reboot) and it now starts libvirtd automatically on startup. However, all is not well! "xl list" and "virsh list" will just hang "systemctl stop libvirtd" just hangs and after this "ps aux" lists the process as defunct root 673 0.0 0.0 0 0 ? Zsl 08:04 0:00 [libvirtd] <defunct> "kill -KILL 673" has no effect "shutdown -r now" also hangs (I have to physically power off the machine) irrespectively of whether I have tried to stop the service before shutdown or not. None of this happened yesterday when I manually started libvirtd after bootup (when xendomains was still running). The logs show nothing in error or warning category, just a heap of info (I have the logs set to level 2). Is there anything in particular that I should be looking for in the logs? Regarding the use of a VM to access the host in a remote location... I had considered this and there was little choice. The machine is on the end of a VDSL line and was installed to consolidate a few servers in that location in order to save power. I figured that automatically starting a VM that ran the networking was not much more risk than a physical server that had to start up its networking, and that has (so far) proven to be true with all of the remote restarts & power outages to date. The only other option is an expensive second link to the host, and I've decided to live with the possibility of having to talk someone through a restart over the phone rather than go down that route. Interestingly, with the NBN in Australia (the country-wide rollout of fibre or broadband to every premises) they have effectively converted all our phone lines to VoIP. This has resulted in the old physical landline now requiring one of the VMs to be running as well, so if I ever need to talk someone through a restart it will need to be on a mobile phone. Thank you GC On 27/07/2017 5:47 AM, Alvin Starr wrote: > I addressed the fix to Jim but I should have addressed it to you. > > > Try systemctl disable xendomains.service > > It is conflicting with libvirtd.service. > I found it by using > "systemd-analyze dot libvirtd.service | dot -Tgif > /tmp/dot1.gif" > > > It looks like libvirt-daemon-driver-xen or > libvirt-daemon-driver-libxl should disable the xendomains.service > > > On 07/26/2017 06:46 AM, G Crowe wrote: >> Jim, >> Thanks for that, I had manually installed >> libvirt-daemon-driver-xen, but also needed to install >> libvirt-daemon-driver-libxl. I can now create VMs and convert config >> formats. >> >> However the daemon still fails to start on bootup. It starts fine >> when I manually start it with "systemctl start libvirtd" but setting >> it to autostart with "systemctl enable libvirtd" seems to have no >> effect. When I look at the status, it tells me that the service is >> "enabled" which means that it starts on bootup (well, that's what it >> means for any other service). >> >> This is rather critical on this PC, as it has unattended restarts and >> the VPN/routing is done in one of the VMs (i.e. I can't get to it >> unless it auto-starts at least one VM). >> >> Unfortunatley there is nothing appearing in the libvirtd log over a >> reboot to help diagnose. >> >> Any suggestions? >> >> >> Thank you >> >> GC >> >> >> [root@testhost ~]# systemctl status libvirtd >> ● libvirtd.service - Virtualization daemon >> Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; >> vendor preset: enabled) >> Active: inactive (dead) >> Docs: man:libvirtd(8) >> http://libvirt.org >> >> >> >> >> On 25/07/2017 1:20 AM, Jim Fehlig wrote: >>> On 07/23/2017 04:25 PM, G Crowe wrote: >>>> Hi, >>>> I am trying to upgrade my Xen host (Dom0) and are having >>>> troubles getting it to work. >>>> >>>> I think that it has booted into a kernel that supports Xen (running >>>> 'xl info' does list some Xen capabilities), but I have three >>>> problems (that I have found so far). >>>> >>>> Firstly, the "libvirtd" daemon doesn't start on bootup (and as a >>>> result all 'virsh' commands fail). It is set to auto-start >>>> (systemctl enable libvirtd), and can be manually started (systemctl >>>> start libvirtd), but it will not auto-start on reboot. >>>> >>>> Secondly, Once I have manually started libvirtd, when I try to >>>> define a domain it gives me an error "could not find capabilities >>>> for arch=x86_64 domaintype=xen" and I haven't yet been able to >>>> define any domains. This domain type works fine on Fedora 21. >>>> >>>> Thirdly, I am unable to convert to/from xml config format, it gives >>>> me the error "error: invalid argument: unsupported config type >>>> xen-xl" however the format "xen-xl" works fine on the Fedora 21 >>>> machine. >>> >>> It sounds like the libvirt libxl driver is not loaded. Is the >>> libvirt-daemon-driver-libxl package installed? If it's installed, >>> enabling debug logging in libvirtd can provide hints why it is not >>> loading >>> >>> http://libvirt.org/logging.html >>> >>> Regards, >>> Jim >>> >>>> >>>> I had these same issues when I tried to upgrade to Fedora 25 and >>>> assumed that something had been broken and so abandoned further >>>> attempts to upgrade, however since Fedora 26 is the same I am now >>>> assuming that I have stuffed something up myself (or missed >>>> something). >>>> >>>> Fedora 21 uses kernel 3.19.3 and xen 4.4.1 >>>> Fedora 26 uses kernel 4.11.8 and xen 4.8.1 >>>> >>>> I have tried following the info on >>>> https://wiki.xen.org/wiki/Fedora_Host_Installation but it appears >>>> to be out of date now (I used this site when I started using Xen >>>> under Fedora 19, and when I upgraded to Fedora 21) >>>> >>>> Does anyone have any suggestions? outputs from "xl info" and the >>>> domain config are below. I have also tried disabling SELinux, but >>>> it made no difference. >>>> >>>> >>>> Thanks >>>> >>>> GC >>>> >>>> ----------------------------------------------- >>>> On the fedora 26 box..... >>>> # xl info >>>> host : family.mydomain.mytld >>>> release : 4.11.8-300.fc26.x86_64 >>>> version : #1 SMP Thu Jun 29 20:09:48 UTC 2017 >>>> machine : x86_64 >>>> nr_cpus : 4 >>>> max_cpu_id : 3 >>>> nr_nodes : 1 >>>> cores_per_socket : 4 >>>> threads_per_core : 1 >>>> cpu_mhz : 2712 >>>> hw_caps : >>>> b7ebfbff:77faf3bf:2c100800:00000121:0000000f:009c67af:00000000:00000100 >>>> >>>> virt_caps : hvm hvm_directio >>>> total_memory : 8072 >>>> free_memory : 128 >>>> sharing_freed_memory : 0 >>>> sharing_used_memory : 0 >>>> outstanding_claims : 0 >>>> free_cpus : 0 >>>> xen_major : 4 >>>> xen_minor : 8 >>>> xen_extra : .1 >>>> xen_version : 4.8.1 >>>> xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p >>>> hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 >>>> xen_scheduler : credit >>>> xen_pagesize : 4096 >>>> platform_params : virt_start=0xffff800000000000 >>>> xen_changeset : >>>> xen_commandline : placeholder >>>> cc_compiler : gcc (GCC) 7.0.1 20170421 (Red Hat 7.0.1-0.15) >>>> cc_compile_by : mockbuild >>>> cc_compile_domain : [unknown] >>>> cc_compile_date : Wed May 3 21:23:49 UTC 2017 >>>> build_id : 1c6e5a40165e05837303942b54757ae1f2d5033d >>>> xend_config_format : 4 >>>> >>>> --------------------------------------------------- >>>> # cat vmtest.xml >>>> <domain type='xen' id='21'> >>>> <name>testVM</name> >>>> <memory unit='KiB'>2097152</memory> >>>> <currentMemory unit='KiB'>2097152</currentMemory> >>>> <vcpu placement='static'>1</vcpu> >>>> <os> >>>> <type arch='x86_64' machine='xenfv'>hvm</type> >>>> <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader> >>>> <boot dev='network'/> >>>> </os> >>>> <features> >>>> <acpi/> >>>> <apic/> >>>> <pae/> >>>> </features> >>>> <clock offset='variable' adjustment='0' basis='utc'/> >>>> <on_poweroff>destroy</on_poweroff> >>>> <on_reboot>restart</on_reboot> >>>> <on_crash>restart</on_crash> >>>> <devices> >>>> <interface type='bridge'> >>>> <mac address='02:02:00:03:00:00'/> >>>> <source bridge='enp1s0'/> >>>> <script path='vif-bridge'/> >>>> </interface> >>>> <serial type='pty'> >>>> <target port='0'/> >>>> </serial> >>>> <console type='pty'> >>>> <target type='serial' port='0'/> >>>> </console> >>>> <input type='mouse' bus='ps2'/> >>>> <input type='keyboard' bus='ps2'/> >>>> <graphics type='vnc' port='5901' autoport='no' >>>> listen='192.168.131.54'> >>>> <listen type='address' address='192.168.131.54'/> >>>> </graphics> >>>> </devices> >>>> </domain> >>>> >>>> -------------------------------------- >>>> >>>> _______________________________________________ >>>> libvirt-users mailing list >>>> libvirt-users(a)redhat.com >>>> https://www.redhat.com/mailman/listinfo/libvirt-users >>>> >>> >> >> _______________________________________________ >> libvirt-users mailing list >> libvirt-users(a)redhat.com >> https://www.redhat.com/mailman/listinfo/libvirt-users >

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[libvirt-users] Xen died - Fedora upgrade from 21 to 26
by G Crowe 26 Jul '17

26 Jul '17

Hi, I am trying to upgrade my Xen host (Dom0) and are having troubles getting it to work. I think that it has booted into a kernel that supports Xen (running 'xl info' does list some Xen capabilities), but I have three problems (that I have found so far). Firstly, the "libvirtd" daemon doesn't start on bootup (and as a result all 'virsh' commands fail). It is set to auto-start (systemctl enable libvirtd), and can be manually started (systemctl start libvirtd), but it will not auto-start on reboot. Secondly, Once I have manually started libvirtd, when I try to define a domain it gives me an error "could not find capabilities for arch=x86_64 domaintype=xen" and I haven't yet been able to define any domains. This domain type works fine on Fedora 21. Thirdly, I am unable to convert to/from xml config format, it gives me the error "error: invalid argument: unsupported config type xen-xl" however the format "xen-xl" works fine on the Fedora 21 machine. I had these same issues when I tried to upgrade to Fedora 25 and assumed that something had been broken and so abandoned further attempts to upgrade, however since Fedora 26 is the same I am now assuming that I have stuffed something up myself (or missed something). Fedora 21 uses kernel 3.19.3 and xen 4.4.1 Fedora 26 uses kernel 4.11.8 and xen 4.8.1 I have tried following the info on https://wiki.xen.org/wiki/Fedora_Host_Installation but it appears to be out of date now (I used this site when I started using Xen under Fedora 19, and when I upgraded to Fedora 21) Does anyone have any suggestions? outputs from "xl info" and the domain config are below. I have also tried disabling SELinux, but it made no difference. Thanks GC ----------------------------------------------- On the fedora 26 box..... # xl info host : family.mydomain.mytld release : 4.11.8-300.fc26.x86_64 version : #1 SMP Thu Jun 29 20:09:48 UTC 2017 machine : x86_64 nr_cpus : 4 max_cpu_id : 3 nr_nodes : 1 cores_per_socket : 4 threads_per_core : 1 cpu_mhz : 2712 hw_caps : b7ebfbff:77faf3bf:2c100800:00000121:0000000f:009c67af:00000000:00000100 virt_caps : hvm hvm_directio total_memory : 8072 free_memory : 128 sharing_freed_memory : 0 sharing_used_memory : 0 outstanding_claims : 0 free_cpus : 0 xen_major : 4 xen_minor : 8 xen_extra : .1 xen_version : 4.8.1 xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 xen_scheduler : credit xen_pagesize : 4096 platform_params : virt_start=0xffff800000000000 xen_changeset : xen_commandline : placeholder cc_compiler : gcc (GCC) 7.0.1 20170421 (Red Hat 7.0.1-0.15) cc_compile_by : mockbuild cc_compile_domain : [unknown] cc_compile_date : Wed May 3 21:23:49 UTC 2017 build_id : 1c6e5a40165e05837303942b54757ae1f2d5033d xend_config_format : 4 --------------------------------------------------- # cat vmtest.xml <domain type='xen' id='21'> <name>testVM</name> <memory unit='KiB'>2097152</memory> <currentMemory unit='KiB'>2097152</currentMemory> <vcpu placement='static'>1</vcpu> <os> <type arch='x86_64' machine='xenfv'>hvm</type> <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader> <boot dev='network'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='variable' adjustment='0' basis='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <interface type='bridge'> <mac address='02:02:00:03:00:00'/> <source bridge='enp1s0'/> <script path='vif-bridge'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <graphics type='vnc' port='5901' autoport='no' listen='192.168.131.54'> <listen type='address' address='192.168.131.54'/> </graphics> </devices> </domain> --------------------------------------

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[libvirt-users] automatically reverting to a snapshot
by Dirty Dan 26 Jul '17

26 Jul '17

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Re: [libvirt-users] Xen died - Fedora upgrade from 21 to 26
by Dominik Psenner 26 Jul '17

26 Jul '17

Note that this does not help with the original problem but points out a critical design flaw. To me your it infrastructure design has no working disaster recovery plan. You should always be able to access critical functionality and from there be able to restore complete functionality step by step. In your case the outermost functionality is the vm host. You should always be able to log into that machine once it has all cables plugged in, regardless of what runs on it (or not). This means that even though you might get this to work you should rethink your design so that you do not have to rely on the vm that does the networking. On 26 Jul 2017 12:50 p.m., "G Crowe" <gclvirtlist(a)crowie.net> wrote: Jim, Thanks for that, I had manually installed libvirt-daemon-driver-xen, but also needed to install libvirt-daemon-driver-libxl. I can now create VMs and convert config formats. However the daemon still fails to start on bootup. It starts fine when I manually start it with "systemctl start libvirtd" but setting it to autostart with "systemctl enable libvirtd" seems to have no effect. When I look at the status, it tells me that the service is "enabled" which means that it starts on bootup (well, that's what it means for any other service). This is rather critical on this PC, as it has unattended restarts and the VPN/routing is done in one of the VMs (i.e. I can't get to it unless it auto-starts at least one VM). Unfortunatley there is nothing appearing in the libvirtd log over a reboot to help diagnose. Any suggestions? Thank you GC [root@testhost ~]# systemctl status libvirtd ● libvirtd.service - Virtualization daemon Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled) Active: inactive (dead) Docs: man:libvirtd(8) http://libvirt.org On 25/07/2017 1:20 AM, Jim Fehlig wrote: > On 07/23/2017 04:25 PM, G Crowe wrote: > >> Hi, >> I am trying to upgrade my Xen host (Dom0) and are having troubles >> getting it to work. >> >> I think that it has booted into a kernel that supports Xen (running 'xl >> info' does list some Xen capabilities), but I have three problems (that I >> have found so far). >> >> Firstly, the "libvirtd" daemon doesn't start on bootup (and as a result >> all 'virsh' commands fail). It is set to auto-start (systemctl enable >> libvirtd), and can be manually started (systemctl start libvirtd), but it >> will not auto-start on reboot. >> >> Secondly, Once I have manually started libvirtd, when I try to define a >> domain it gives me an error "could not find capabilities for arch=x86_64 >> domaintype=xen" and I haven't yet been able to define any domains. This >> domain type works fine on Fedora 21. >> >> Thirdly, I am unable to convert to/from xml config format, it gives me >> the error "error: invalid argument: unsupported config type xen-xl" however >> the format "xen-xl" works fine on the Fedora 21 machine. >> > > It sounds like the libvirt libxl driver is not loaded. Is the > libvirt-daemon-driver-libxl package installed? If it's installed, enabling > debug logging in libvirtd can provide hints why it is not loading > > http://libvirt.org/logging.html > > Regards, > Jim > > >> I had these same issues when I tried to upgrade to Fedora 25 and assumed >> that something had been broken and so abandoned further attempts to >> upgrade, however since Fedora 26 is the same I am now assuming that I have >> stuffed something up myself (or missed something). >> >> Fedora 21 uses kernel 3.19.3 and xen 4.4.1 >> Fedora 26 uses kernel 4.11.8 and xen 4.8.1 >> >> I have tried following the info on https://wiki.xen.org/wiki/Fedo >> ra_Host_Installation but it appears to be out of date now (I used this >> site when I started using Xen under Fedora 19, and when I upgraded to >> Fedora 21) >> >> Does anyone have any suggestions? outputs from "xl info" and the domain >> config are below. I have also tried disabling SELinux, but it made no >> difference. >> >> >> Thanks >> >> GC >> >> ----------------------------------------------- >> On the fedora 26 box..... >> # xl info >> host : family.mydomain.mytld >> release : 4.11.8-300.fc26.x86_64 >> version : #1 SMP Thu Jun 29 20:09:48 UTC 2017 >> machine : x86_64 >> nr_cpus : 4 >> max_cpu_id : 3 >> nr_nodes : 1 >> cores_per_socket : 4 >> threads_per_core : 1 >> cpu_mhz : 2712 >> hw_caps : b7ebfbff:77faf3bf:2c100800:000 >> 00121:0000000f:009c67af:00000000:00000100 >> virt_caps : hvm hvm_directio >> total_memory : 8072 >> free_memory : 128 >> sharing_freed_memory : 0 >> sharing_used_memory : 0 >> outstanding_claims : 0 >> free_cpus : 0 >> xen_major : 4 >> xen_minor : 8 >> xen_extra : .1 >> xen_version : 4.8.1 >> xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 >> hvm-3.0-x86_32p hvm-3.0-x86_64 >> xen_scheduler : credit >> xen_pagesize : 4096 >> platform_params : virt_start=0xffff800000000000 >> xen_changeset : >> xen_commandline : placeholder >> cc_compiler : gcc (GCC) 7.0.1 20170421 (Red Hat 7.0.1-0.15) >> cc_compile_by : mockbuild >> cc_compile_domain : [unknown] >> cc_compile_date : Wed May 3 21:23:49 UTC 2017 >> build_id : 1c6e5a40165e05837303942b54757ae1f2d5033d >> xend_config_format : 4 >> >> --------------------------------------------------- >> # cat vmtest.xml >> <domain type='xen' id='21'> >> <name>testVM</name> >> <memory unit='KiB'>2097152</memory> >> <currentMemory unit='KiB'>2097152</currentMemory> >> <vcpu placement='static'>1</vcpu> >> <os> >> <type arch='x86_64' machine='xenfv'>hvm</type> >> <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader> >> <boot dev='network'/> >> </os> >> <features> >> <acpi/> >> <apic/> >> <pae/> >> </features> >> <clock offset='variable' adjustment='0' basis='utc'/> >> <on_poweroff>destroy</on_poweroff> >> <on_reboot>restart</on_reboot> >> <on_crash>restart</on_crash> >> <devices> >> <interface type='bridge'> >> <mac address='02:02:00:03:00:00'/> >> <source bridge='enp1s0'/> >> <script path='vif-bridge'/> >> </interface> >> <serial type='pty'> >> <target port='0'/> >> </serial> >> <console type='pty'> >> <target type='serial' port='0'/> >> </console> >> <input type='mouse' bus='ps2'/> >> <input type='keyboard' bus='ps2'/> >> <graphics type='vnc' port='5901' autoport='no' >> listen='192.168.131.54'> >> <listen type='address' address='192.168.131.54'/> >> </graphics> >> </devices> >> </domain> >> >> -------------------------------------- >> >> _______________________________________________ >> libvirt-users mailing list >> libvirt-users(a)redhat.com >> https://www.redhat.com/mailman/listinfo/libvirt-users >> >> > _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users

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