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NUMA Pinning bug with Hugepages?
by Alan G 15 Apr '20

15 Apr '20

Hi, I seem to have found an issue when trying to setup a high performance VM utilising hugepages and NUMA pinning. The VM is configured for 32GB RAM and uses hugepages of size 1G. The host has two NUMA nodes each having 64GB RAM (for 128GB total system RAM). No other VMs are running or otherwise pinned to the host. The VM is pinned to node 0. And the required hugepages are allocated with echo 32 > /sys/devices/system/node/node0/hugepages/hugepages-1048576kB/nr_hugepages I then attempt to start the VM and get a pop-up error saying "cannot accommodate memory of VM's pinned virtual NUMA nodes within host's physical NUMA nodes". However, if I remove the hugepages from node 0 echo 0 > /sys/devices/system/node/node0/hugepages/hugepages-1048576kB/nr_hugepages Start the VM and then immediately re-create the hugepqages then everything works as expected. It seems to me that oVirt is considering the hugepages as allocated memory even if they are not in use. Is this correct? Thanks, Alan

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upgrade VM cluster compatibility version
by Bill James 15 Apr '20

15 Apr '20

I'm trying to upgrade my cluster to 4.3. Currently its running 4.2.8.2-1.el7. But the cluster compatibility version is 3.6. I try to change that and it says I need to edit the VM. https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks.h… says: *Important:* An error message may warn that some virtual machines and templates are incorrectly configured. To fix this error, edit each virtual machine manually. The *Edit Virtual Machine* window provides additional validations and warnings that show what to correct. Sometimes the issue is automatically corrected and the virtual machine’s configuration just needs to be saved again. After editing each virtual machine, you will be able to change the cluster compatibility version. I edit the VM and there are no errors or warnings. I see no way to change the cluster compatibility level on a VM. How do I change the Custom Compatibility Version?? -- This email, its contents and attachments contain information from J2 Global, Inc. and/or its affiliates which may be privileged, confidential or otherwise protected from disclosure. The information is intended to be for the addressee(s) only. If you are not an addressee, any disclosure, copy, distribution or use of the contents of this message is prohibited. If you have received this email in error, please notify the sender by reply email and delete the original message and any copies.

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Get OAuth token locally without password?
by Chris Adams 14 Apr '20

14 Apr '20

I'm working on a cron job to run on the engine to do some tasks via the API. Is there a way I can get an API OAuth token created without actually storing a password? For example, some script that can be run to directly create a session in the database and return the token. Obviously this _can_ be done, it's a matter of knowing the right bits to do (so basically wondering if that has already been written). I only have internal users, so no external authentication store available. -- Chris Adams <cma(a)cmadams.net>

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Migrate engine to another storage domain?
by Simon Nylund 14 Apr '20

14 Apr '20

Is there a successful way of migrating an up and running engine to another storage domain? I've been reading through the archive and tested a few various ways without any success. The only way i found working without errors was deploying a new engine attached to the new storage domain, and import the old data domain for the vms, but then you lose all the settings for the previous engine (ofc). And have to redo all of that.

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export vm from 3.4 to 4.3
by Budur Nagaraju 14 Apr '20

14 Apr '20

Hi Can someone help in exporting a vm from 3.5 to 4.3 version , any help or links for exporting a vm ? Thanks, Nagaraju

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Total LUN Limitations
by Ryan Chewning 14 Apr '20

14 Apr '20

I'm hoping that someone might be able to clarify a limitation found in the RedHat documentation. The documentation indicates that there is a limitation of 300 LUNS per block based storage device. Does this include LUNs which are directly mapped to a VM? Or does this referrer to LUNs which serve as a storage repository for ISOs / VM disks?

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Host fails to enter in maintenance due to migration failure
by Vinícius Ferrão 13 Apr '20

13 Apr '20

Hello, I’ve a host that’s preparing to maintenance for almost 20 hours now. There’s a huge VM on it, with 32 gigs of RAM and this VM is failing migration. So, there’s a way to cancel prepare for maintenance, so the host can stop trying this migration that’s end up failing? I can just shutdown the VM to do the maintenance on the host... Thanks,

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Re: oVirt 4.4.0 Beta release refresh is now available for testing
by Joop 13 Apr '20

13 Apr '20

On 13-4-2020 09:45, Satheesaran Sundaramoorthi wrote: > > > On Thu, Apr 9, 2020 at 3:37 PM Sandro Bonazzola <sbonazzo(a)redhat.com > <mailto:sbonazzo@redhat.com>> wrote: > > > > Does the hyperconverged installation now work with glusterfs? > I tested alpha/beta1/2 and the latter won't get past the > storage step. > > > Not yet. There was the issue with glusterfs storage domain and storage > domain blocksize probe check. > This is addressed with a new ioprocess-1.4.1 package for the bug[1]. > > We are testing currently with this fix and it works well. But hitting > yet another issue, where Hosted Engine deployment > fails at the very last stage in the deployment. Gluster developer is > looking in to it, as I respond here. > Soon we will have a working build and I will let you once these issues > are settled. > > [1] - https://bugzilla.redhat.com/show_bug.cgi?id=1820283 > > Thanks, > sas > > Thanks for the message. Looking through the logs I saw references to the blocksize but since that is contained in the ansible scripts which get downloaded to the host I gave up finding the source versions to try to see it I could get it going beyond that failing step. Anyway, thanks for informing me, Regards, Joop

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engine certificate problems in MacOS Catalina
by Jayme 13 Apr '20

13 Apr '20

I recently setup a new ovirt environment using latest 4.3.9 installer. I can't seem to get the novnc client to work for the life of me in safari or chrome on MacOS catalina. I have downloaded the CA from the login page and imported it into keychain and made sure it was fully trusted. In both system and login keychains. Looking at this: https://support.apple.com/en-us/HT210176 seems to suggest that the certificate may be invalid if the issue date is longer than 825 days. The certificate generated by ovirt installer seems to be valid for 5 years. I'm not sure if this is the issue or something else is wrong but if cert length is a problem is there a way for me to re-regenerate a new certificate with a shorter issue period?

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oVirt LUN Limitations
by Ryan Chewning 13 Apr '20

13 Apr '20

I'm hoping that someone might be able to clarify a limitation found in the RedHat documentation. The documentation indicates that there is a limitation of 300 LUNS per block based storage device. Does this include LUNs which are directly mapped to a VM? Or does this referrer to LUNs which serve as a storage repository for ISOs / VM disks? Thanks!

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