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SURVEY: your NFS configuration (Bug 1666795 - SHE doesn't start after power-off, 4.1 to 4.3 upgrade - VolumeDoesNotExist: Volume does not exist )
by Nir Soffer 18 Feb '19

18 Feb '19

Looking at https://bugzilla.redhat.com/1666795 It seems that a change in vdsm/libvirt exposed NFS configuration issue, that may was needed in the past and probably not needed now. If you use NFS, I would like to see your /etc/exports (after sanitizing it if needed). For extra bonus, output of "exportfs -v" would be useful. In particular, I want to know if you use root_squash, all_squash, or no_root_squash. Thanks, Nir

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How to set hot plugged memory online_movable
by zodaoko＠gmail.com 18 Feb '19

18 Feb '19

Hi, I'd like to try the memory hot unplug, refer to: https://www.ovirt.org/documentation/vmm-guide/chap-Editing_Virtual_Machines…: "All blocks of the hot-plugged memory must be set to **online_movable** in the virtual machine’s device management rules. In virtual machines running up-to-date versions of Enterprise Linux or CoreOS, this rule is set by default." I created a VM running CentOS7.6: # more /etc/redhat-release CentOS Linux release 7.6.1810 (Core) # more /usr/lib/udev/rules.d/40-redhat.rules ... # Memory hotadd request SUBSYSTEM!="memory", ACTION!="add", GOTO="memory_hotplug_end" PROGRAM="/bin/uname -p", RESULT=="s390*", GOTO="memory_hotplug_end" ENV{.state}="online" PROGRAM="/bin/systemd-detect-virt", RESULT=="none", ENV{.state}="online_movable" ATTR{state}=="offline", ATTR{state}="$env{.state}" LABEL="memory_hotplug_end" It looks like the online_movable will be set only when systemd-detect-virt returns none, i.e. hot plugging memory for a bare-metal machine, so how to make the hot plugged memory "online_movable" in the virtual machines? Thank you. Regards, -Zhen

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changes in oVirt 4.3 and vGPU?
by Hetz Ben Hamo 18 Feb '19

18 Feb '19

Hi, I just installed a Tesla T4 card, installed the nvidia's RPM, I see the mdev_type stuff etc. Following their instructions, I'm trying to set a Windows 10 VM to use the vGPU (the VM works without any vGPU), I get this error in the event... VM Win-10-test is down with error. Exit message: internal error: qemu unexpectedly closed the monitor: 2019-02-08T14:01:11.287955Z qemu-kvm: warning: All CPU(s) up to maxcpus should be described in NUMA config, ability to start up with partial NUMA mappings is obsoleted and will be removed in future 2019-02-08T14:01:11.313878Z qemu-kvm: -device vfio-pci,id=hostdev0,sysfsdev=/sys/bus/mdev/devices/486b48a3-01c7-4a67-9727-279813bae0e8,display=off,bus=pci.0,addr=0x8: vfio error: 486b48a3-01c7-4a67-9727-279813bae0e8: error getting device from group 0: Input/output error Verify all devices in group 0 are bound to vfio-<bus> or pci-stub and not already in use. Could someone explain to me what am I missing and what to do? I don't see any docs about it. Thanks

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Migration of VMs across two Ovirt setups
by ddc.comp＠gmail.com 18 Feb '19

18 Feb '19

Hi, I have two ovirt setups having multiple hosts and cluster and around 100+ vms in one and around 32 in one setup. I want to dismantle one setup and before before doing so all vms are need to be migrated to one setup I tried with import vms from another setup using Libvert -- https://ovirt.org/develop/release-management/features/virt/KvmToOvirt.html but no luck connection not getting established. What if I simply remove one host from one setup having local storage(all vms are located on local storage) and simply add it to another setup? and then migrate VMs from local to shared storage and then dismantle host ! Regards Dipak Chaudhari

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AMD EPYC 4.3 upgrade 'CPU type is not supported in this cluster compatibility version or is not supported at all'
by Ryan Bullock 18 Feb '19

18 Feb '19

We just updated our engine to 4.3, but when I tried to update one of our AMD EPYC hosts it could not activate with the error: Host vmc2h2 moved to Non-Operational state as host CPU type is not supported in this cluster compatibility version or is not supported at all. Relevant (I think) parts from the the engine log: (EE-ManagedThreadFactory-engineScheduled-Thread-82) [ee51a70] Could not find server cpu for server 'vmc2h2' (745a14c6-9d31-48a4-9566-914647d83f53), flags: 'fpu,vme,de,pse,tsc,msr,pae,mce,cx8,apic,sep,mtrr,pge,mca,cmov,pat,pse36,clflush,mmx,fxsr,sse,sse2,ht,syscall,nx,mmxext,fxsr_opt,pdpe1gb,rdtscp,lm,constant_tsc,art,rep_good,nopl,nonstop_tsc,extd_apicid,amd_dcm,aperfmperf,eagerfpu,pni,pclmulqdq,monitor,ssse3,fma,cx16,sse4_1,sse4_2,movbe,popcnt,aes,xsave,avx,f16c,rdrand,lahf_lm,cmp_legacy,svm,extapic,cr8_legacy,abm,sse4a,misalignsse,3dnowprefetch,osvw,skinit,wdt,tce,topoext,perfctr_core,perfctr_nb,bpext,perfctr_l2,cpb,hw_pstate,sme,retpoline_amd,ssbd,ibpb,vmmcall,fsgsbase,bmi1,avx2,smep,bmi2,rdseed,adx,smap,clflushopt,sha_ni,xsaveopt,xsavec,xgetbv1,clzero,irperf,xsaveerptr,arat,npt,lbrv,svm_lock,nrip_save,tsc_scale,vmcb_clean,flushbyasid,decodeassists,pausefilter,pfthreshold,avic,v_vmsave_vmload,vgif,overflow_recov,succor,smca' 2019-02-06 17:23:58,527-08 INFO [org.ovirt.engine.core.vdsbroker.SetVdsStatusVDSCommand] (EE-ManagedThreadFactory-engineScheduled-Thread-82) [7f6d4f0d] START, SetVdsStatusVDSCommand(HostName = vmc2h2, SetVdsStatusVDSCommandParameters:{hostId='745a14c6-9d31-48a4-9566-914647d83f53', status='NonOperational', nonOperationalReason='CPU_TYPE_INCOMPATIBLE_WITH_CLUSTER' From virsh -r capabilities: <cpu> <arch>x86_64</arch> <model>EPYC-IBPB</model> <vendor>AMD</vendor> <microcode version='134222375'/> <topology sockets='1' cores='32' threads='2'/> <feature name='ht'/> <feature name='osxsave'/> <feature name='xsaves'/> <feature name='cmp_legacy'/> <feature name='extapic'/> <feature name='skinit'/> <feature name='wdt'/> <feature name='tce'/> <feature name='topoext'/> <feature name='perfctr_core'/> <feature name='perfctr_nb'/> <feature name='invtsc'/> <pages unit='KiB' size='4'/> <pages unit='KiB' size='2048'/> <pages unit='KiB' size='1048576'/> </cpu> I also tried creating a new 4.3 cluster, set to the AMD EPYC IPBDB SSBD and moving the host into it, but it failed to move it into that cluster with a similar error about an unsupported CPU (for some reason it also made me clear the additional kernel options as well, we use 1gb hugepages). I have not yet tried removing the host entirely and adding it as part of creating the new cluster. We have been/are using a database change to update the 4.2 cluster level to include EPYC support with the following entries (can post the whole query if needed): 7:AMD EPYC:svm,nx,model_EPYC:EPYC:x86_64; 8:AMD EPYC IBPB:svm,nx,ibpb,model_EPYC:EPYC-IBPB:x86_64 We have been running 4.2 with this for awhile. We did apply the same changes after the 4.3 update, but only for the 4.2 cluster level. We only used the AMD EPYC IBPB model. Reverting the host back to 4.2 allows it to activate and run normally. Anyone have any ideas as to why it can't seem to find the cpu type? Thanks, Ryan Bullock

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Re: Best Practice to Deploy HostedEngine oVirt Environment
by Eyal Edri 18 Feb '19

18 Feb '19

adding users list, infra is for infrastructure and CI. On Mon, Feb 18, 2019, 05:40 Mohd Hanief Harun <hanief(a)abyres.net wrote: > Hi all, > > Im new in rhv and oVirt, hope there some space for the noob question :) > > Let say I have 2 hypervisors and 1 storage server. Where is the best > practice to install self-hosted engine? In hypervisors or storage? I have > experienced installing self-hosted engine in 2 storages. If something > happened to the storage 1, ovirt-engine (ovirt-manager) will automatically > migrate to storage 2. > > But this time is difference. We only have 1 storage. my concern is, if > something happened to the storage, I cannot access my ovirt-manager. I'm > thinking to deploy self-hosted engine in hypervisors since we have 2 > hypervisors. any advise? what is the best practice? If you have any > tutorial installing hosted engine in 2 hypervisors would be very appreciate. > > thanks. > _______________________________________________ > Infra mailing list -- infra(a)ovirt.org > To unsubscribe send an email to infra-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/infra@ovirt.org/message/JRYHBXIWMCOZF… >

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new easy way to open issues for ovirt.org and documentation
by Greg Sheremeta 18 Feb '19

18 Feb '19

Hi, I created some footer links on ovirt.org to make it super easy to open GitHub issues. We often get questions about where to report documentation issues and things like that -- hopefully this eases the pain. When you are visiting any page on ovirt.org and you see a problem or have an idea for enhancement, simply scroll down and click 'Report an issue on GitHub'. [image: Selection_393.png] Full demo (2 minutes): https://www.youtube.com/watch?v=TbORKknLVL4 (and, of course, if you're so inclined, the Edit link starts a PR for you ...) Best wishes, Greg -- GREG SHEREMETA SENIOR SOFTWARE ENGINEER - TEAM LEAD - RHV UX Red Hat NA <https://www.redhat.com/> gshereme(a)redhat.com IRC: gshereme <https://red.ht/sig>

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Huge Pages
by Vincent Royer 17 Feb '19

17 Feb '19

How do I know how many huge pages my hosts can support? cat /proc/meminfo | grep Huge AnonHugePages: 17684480 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB [image: image.png] And once I know, I set the kernel parameters here, and reboot the host, correct? [image: image.png] And then I assume I assign them to the VM here? How do I decide how many huge pages and what size a particular VM can benefit from? [image: image.png] Is there a part of the docs I am not finding that covers this?

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Re: Ovirt Cluster completely unstable
by Leo David 16 Feb '19

16 Feb '19

Just thinking.... Maybe different options where configured to the volumes during update, that could make them unstable ? ie: sharding or something else On Sat, Feb 16, 2019, 13:26 Darryl Scott <dscott(a)umbctraining.com wrote: > Sandro > > > I don't have ovirt-log-collector on my ovirt engine. How can obtain? I > see a github repo to make file, I do not want to be making files on my > ovirt-engine, just not yet, I could possible on weekend. > > > Where can I obtain the ovirt-log-collector? > > > > ------------------------------ > *From:* Sandro Bonazzola <sbonazzo(a)redhat.com> > *Sent:* Thursday, February 14, 2019 9:16:05 AM > *To:* Jayme > *Cc:* Darryl Scott; users > *Subject:* Re: [ovirt-users] Re: Ovirt Cluster completely unstable > > > > Il giorno gio 14 feb 2019 alle ore 07:54 Jayme <jaymef(a)gmail.com> ha > scritto: > > I have a three node HCI gluster which was previously running 4.2 with zero > problems. I just upgraded it yesterday. I ran in to a few bugs right away > with the upgrade process, but aside from that I also discovered other users > with severe GlusterFS problems since the upgrade to new GlusterFS version. > It is less than 24 hours since I upgrade my cluster and I just got a notice > that one of my GlusterFS bricks is offline. There does appear to be a very > real and serious issue here with the latest updates. > > > tracking the issue on Gluster side on this bug: > https://bugzilla.redhat.com/show_bug.cgi?id=1677160 > If you can help Gluster community providing requested logs it would be > great. > > > > > > > On Wed, Feb 13, 2019 at 7:26 PM <dscott(a)umbctraining.com> wrote: > > I'm abandoning my production ovirt cluster due to instability. I have a > 7 host cluster running about 300 vms and have been for over a year. It has > become unstable over the past three days. I have random hosts both, > compute and storage disconnecting. AND many vms disconnecting and becoming > unusable. > > 7 host are 4 compute hosts running Ovirt 4.2.8 and three glusterfs hosts > running 3.12.5. I submitted a bugzilla bug and they immediately assigned > it to the storage people but have not responded with any meaningful > information. I have submitted several logs. > > I have found some discussion on problems with instability with gluster > 3.12.5. I would be willing to upgrade my gluster to a more stable version > if that's the culprit. I installed gluster using the ovirt gui and this is > the version the ovirt gui installed. > > Is there an ovirt health monitor available? Where should I be looking to > get a resolution the problems I'm facing. > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/BL4M3JQA3IEXC… > > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/QULCBXHTKSCPK… > > > > -- > > SANDRO BONAZZOLA > > MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV > > Red Hat EMEA <https://www.redhat.com/> > > sbonazzo(a)redhat.com > <https://red.ht/sig> > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/ECPLXX5JIG5VC… >

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oVirt upgrade to specific version
by Leo David 16 Feb '19

16 Feb '19

Hi, I have a running 4.2.7 hci cluster which I would upgrade to 4.2.8. If I do this in the standard manner (yum update in engine vm and then the nodes from engine UI) I assume it will go to 4.3, which I would rather avoid for now. Is there a way for getting it updated strictelly to 4.2.8 ? Thanks, Leo

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