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VM snapshot - some info needed
by Strahil Nikolov 07 Jul '19

07 Jul '19

Hello Community, I have noticed that if I want a VM snapshot with memory - I get a warning "The VM will be paused while saving the memory" .Is there a way to make snapshot without pausing the VM for the whole duration ? I have noticed that it doesn't matter if VM has qemu-guest-agent or ovirt-guest-agent. Thanks in advance for sharing your thoughts. Best Regards,Strahil Nikolov

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Experience 4.1.x -> 4.2.8 -> 4.3.4 upgrade lessons
by Richard Chan 07 Jul '19

07 Jul '19

Hi oVirters, Did a 4.1 - > 4.2.8 -> 4.3.4 upgrade in two hops. Here is my experience, hope it can save you some pain. Gotchas 1. For shutdown VMs, their disks were deactivated (though still attached) 2. For shutdown VMs, their NICs were "Up" but "Unplugged" 3. VM Custom Compatibility Version is hard to find. (If it is too old say 3.6, 4.1) they won't start up. The location is: VM -> Edit -> System -> Advanced Parameters (click this) "Advanced Parameters" is an expandable widget that is quite small when collapsed. When it is expanded then you will see "Custom Compatibility Version" 4. Storage Domain migration to V5: I use a NFS storoage domain. This is migrated to the "V5" format and a lot of cleanup is done. If you have stray files or images not owned by 36:36 (vdsm:kvm on my NFS server), the V5 upgrade will fail, there will be no SPM, and the Data Center will oscillate between Non-responsive and Contending. Why would there be non 36:36 uid/gid files? This is a long story, but from the older 3.x days when there was less functionality, we would sometimes directly manipulate the filesystem and/or qcow2 images using guestfish or equivalent tools which would change the owner to qemu:qemu. Forgetting to chown back to vdsm:kvm is a recipe for pain. Cheers! -- Richard Chan

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Re: Upgraded to 4.3: getting SpmStart failure
by Strahil 07 Jul '19

07 Jul '19

Can you run the engine manually on another server ? hosted-engine --vm-start Best Regards, Strahil NikolovOn Jul 5, 2019 18:05, Richard Chan <richard(a)treeboxsolutions.com> wrote: > > My engine is getting SpmStart failure. > > What is the best way to troubleshoot this? > > > -- > Richard Chan >

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Ovirt 4.3.5.3-1.el7 manual migration fails
by Strahil 06 Jul '19

06 Jul '19

Hey Community, Can someone tell me which log should be checked - as one of my VMs cannot be live migrated. In this case it get's stuck at 99% for several minutes and then fails. Best Regards, Strahil Nikolov

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importing a vm is always very slow
by Crazy Ayansh 05 Jul '19

05 Jul '19

Hi Users, Why importing the vm from export domain is very slow and how can we do it fast ? How to cancel a import process ? [image: image.png] Thanks

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Upgraded to 4.3: getting SpmStart failure
by Richard Chan 05 Jul '19

05 Jul '19

My engine is getting SpmStart failure. What is the best way to troubleshoot this? -- Richard Chan

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Anaconda crashing on start while trying to Install oVirt Node on bare metal
by rubentrindade＠live.com 05 Jul '19

05 Jul '19

Hello there! I'm trying to install an oVirt node(the most stable recent one) on a machine(just in case you didn't figure from the title :P) and anaconda just crashes \o/ I've tried to start anaconda in text mode, but the error is the exact same. Here's a screenshot of the event(text mode, although it shouldn't matter): https://i.imgur.com/ihO1xWP.jpg The only "disk" attached to the machine has no partitions, it's absolutely clean. The machine in question is a PowerEdge M520, if that matters, and I'm trying to install on top of a pair of 32GB mirrored SD cards. I installed CentOS7 on a machine that's virtually the same(they're the exact same, but aren't the same machine) and didn't have any problem. I just have no idea. Never encountered such problem. So any help would be very appreciated. Thanks ^^

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Re: [ovirt-devel] USB on host support?
by Juan Pablo Lorier 05 Jul '19

05 Jul '19

I'm having a similar problem. The passtrough needs 2 steps, the first is to attach the host device to the VM, but if you don't enable the spice usb the vm fails to start. I don't know if the USB works straight from the host device or if it depends on the spice console. In my case, a device that work in a windows 10 pc doesn't work in a windows 10 vm. Maybe we both can get help in this matter. Regards El 1/7/19 a las 13:02, users-request(a)ovirt.org escribió: > Send Users mailing list submissions to > users(a)ovirt.org > > To subscribe or unsubscribe via email, send a message with subject or > body 'help' to > users-request(a)ovirt.org > > You can reach the person managing the list at > users-owner(a)ovirt.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Users digest..." > > Today's Topics: > > 1. Re: Failed on HE-Storage migration (Strahil Nikolov) > 2. Adding a custom fence agent on 4.3.4 (Matteo) > 3. USB host support? (Hetz Ben Hamo) > 4. Re: [ovirt-devel] USB on host support? (Hetz Ben Hamo) > 5. Re: Ovirt Hyperconverged Cluster (Stefanile Raffaele) > > _______________________________________________ > 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/

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4.3 won't upgrade engine in standalone KVM VM: low_custom_compatibility_version 'agent03'
by Richard Chan 05 Jul '19

05 Jul '19

Hi, I am running 4.2 engine in a standalone libvirt KVM VM (running on a hypervisor that is not part of the oVirt infrastructure); i.e., I am not using hosted engine but still running engine in a VM. Now 4.3 won't upgrade inside this libvirt KVM VM: Failed to execute stage 'Setup validation': Cannot upgrade the Engine due to low custom_compatibility_version for virtual machines: ['agent03']. Please edit this virtual machines, in edit VM dialog go to System->Advanced Parameters -> Custom Compatibility Version and either reset to empty (cluster default) or set a value supported by the new installation: 4.1, 4.2, 4.3. engine-setup has probably detected that it is running inside a VM: 1. Where did it get 'agent03' string from 2. Any suggestions how to fool engine-setup to think this is 4.3 Here is the dmidecode of the standalone engine VM: # dmidecode 3.1 Getting SMBIOS data from sysfs. SMBIOS 2.8 present. 11 structures occupying 591 bytes. Table at 0xBFED7000. Handle 0x0100, DMI type 1, 27 bytes System Information Manufacturer: Red Hat Product Name: KVM Version: RHEL 7.3.0 PC (i440FX + PIIX, 1996) Serial Number: Not Specified UUID: cdb0f3fd-42c7-4a16-bcd1-5d65f19aca19 Wake-up Type: Power Switch SKU Number: Not Specified Family: Red Hat Enterprise Linux Handle 0x0300, DMI type 3, 21 bytes Chassis Information Manufacturer: Red Hat Type: Other Lock: Not Present Version: RHEL 7.3.0 PC (i440FX + PIIX, 1996) Serial Number: Not Specified Asset Tag: Not Specified Boot-up State: Safe Power Supply State: Safe Thermal State: Safe Security Status: Unknown OEM Information: 0x00000000 Height: Unspecified Number Of Power Cords: Unspecified Contained Elements: 0 Handle 0x0400, DMI type 4, 42 bytes Processor Information Socket Designation: CPU 0 Type: Central Processor Family: Other Manufacturer: Red Hat ID: C1 06 03 00 FF FB 8B 07 Version: RHEL 7.3.0 PC (i440FX + PIIX, 1996) Voltage: Unknown External Clock: Unknown Max Speed: 2000 MHz Current Speed: 2000 MHz Status: Populated, Enabled Upgrade: Other L1 Cache Handle: Not Provided L2 Cache Handle: Not Provided L3 Cache Handle: Not Provided Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified Core Count: 1 Core Enabled: 1 Thread Count: 1 Characteristics: None Handle 0x0401, DMI type 4, 42 bytes Processor Information Socket Designation: CPU 1 Type: Central Processor Family: Other Manufacturer: Red Hat ID: C1 06 03 00 FF FB 8B 07 Version: RHEL 7.3.0 PC (i440FX + PIIX, 1996) Voltage: Unknown External Clock: Unknown Max Speed: 2000 MHz Current Speed: 2000 MHz Status: Populated, Enabled Upgrade: Other L1 Cache Handle: Not Provided L2 Cache Handle: Not Provided L3 Cache Handle: Not Provided Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified Core Count: 1 Core Enabled: 1 Thread Count: 1 Characteristics: None Handle 0x1000, DMI type 16, 23 bytes Physical Memory Array Location: Other Use: System Memory Error Correction Type: Multi-bit ECC Maximum Capacity: 8 GB Error Information Handle: Not Provided Number Of Devices: 1 Handle 0x1100, DMI type 17, 40 bytes Memory Device Array Handle: 0x1000 Error Information Handle: Not Provided Total Width: Unknown Data Width: Unknown Size: 8192 MB Form Factor: DIMM Set: None Locator: DIMM 0 Bank Locator: Not Specified Type: RAM Type Detail: Other Speed: Unknown Manufacturer: Red Hat Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified Rank: Unknown Configured Clock Speed: Unknown Minimum Voltage: Unknown Maximum Voltage: Unknown Configured Voltage: Unknown Handle 0x1300, DMI type 19, 31 bytes Memory Array Mapped Address Starting Address: 0x00000000000 Ending Address: 0x000BFFFFFFF Range Size: 3 GB Physical Array Handle: 0x1000 Partition Width: 1 Handle 0x1301, DMI type 19, 31 bytes Memory Array Mapped Address Starting Address: 0x00100000000 Ending Address: 0x0023FFFFFFF Range Size: 5 GB Physical Array Handle: 0x1000 Partition Width: 1 Handle 0x2000, DMI type 32, 11 bytes System Boot Information Status: No errors detected Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: EFI Development Kit II / OVMF Version: 0.0.0 Release Date: 02/06/2015 Address: 0xE8000 Runtime Size: 96 kB ROM Size: 64 kB Characteristics: BIOS characteristics not supported Targeted content distribution is supported UEFI is supported System is a virtual machine BIOS Revision: 0.0 Handle 0xFEFF, DMI type 127, 4 bytes End Of Table Cheers -- Richard Chan

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Any one uses Nvidia T4 as vGPU in production?
by Arman Khalatyan 05 Jul '19

05 Jul '19

Hello, any successful stories of the Nvidia T4 usage with the Ovirt? I was wondered if one would get 2 hosts each with T4s , are there live migrations possible? thanks, Arman

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