November 2021 - Users - oVirt List Archives

is disk reduce command while VM is active after snapshot deletion save?
by christian.peater＠gmx.de 03 Nov '21

03 Nov '21

When creating a snapshot, the volume gets two lv extents (2GB) . But after deleting the snapshot, the extents are kept and with every Snapshot creation the volume size increases. This is really annoying, especially when using snapshot for nightly backup. we are using oVirt 4.3.10 and we can't upgrade to 4.4 I have read that to shrink the volume the disk reduce command is what helps here, but the rest api documentation says, that this is only applicable while vm is not running. crazy as i am, i have called the reduce command while the vm was running, and it seemed to work. the volume has shrunk and the vm didn't crash. But is it save to do so? and why isn't the reduce command is called after deletion of a snapshot?

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Importing default Grafana dashboards?
by Chris Adams 03 Nov '21

03 Nov '21

I upgraded a cluster to 4.4 (so really, reinstalled the engine with a backup and reinstalled all the hosts). I see the Monitoring Portal link to Grafana, but when I log in, there are no dashboards. Did I miss a step to import the default dashboard set? Is there a quick-and-easy way to do that? I've only barely poked at Grafana before, so not really sure what to do. -- Chris Adams <cma(a)cmadams.net>

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Re: Some errors on the grafana dashboard
by Aviv Litman 03 Nov '21

03 Nov '21

Hi Tommy, You can apply the patches by changing the relevant files in engine and dwh and run 'engine-setup' or 'engine-setup --offline' . Steps: 1. connect to your engine machine 2. vi /usr/share/ovirt-engine/dbscripts/create_dwh_views.sql : add the new line as described in the patch: https://gerrit.ovirt.org/#/c/ovirt-engine/+/114565/4/packaging/dbscripts/cr… . 3. connect to your dwh machine (if the engine and dwh are on the same machine then all files are in the same machine) 4. create or edit the files in the patch: https://gerrit.ovirt.org/#/c/ovirt-dwh/+/114568/, note that for you files named 4_4 should be named 4_3 You can find the file's location with this command: find / -name *create_views_4_3.sql* 5. run engine-setup, or engine-setup --offline Let me know how it goes! Thanks, Aviv On Mon, Nov 1, 2021 at 9:42 AM Tommy Sway <sz_cuitao(a)163.com> wrote: > But how to apply the patches? > > > > Is some docs can guide me how to apply? > > > > Thanks. > > > > > > > > > > *From:* Aviv Litman <alitman(a)redhat.com> > *Sent:* Sunday, October 3, 2021 10:08 PM > *To:* Tommy Sway <sz_cuitao(a)163.com> > *Subject:* Re: Some errors on the grafana dashboard > > > > Important note: do not to change the minimal version part in dwh > ovirt-engine-dwh.spec.in file. > > > > On Sun, Oct 3, 2021 at 4:50 PM Aviv Litman <alitman(a)redhat.com> wrote: > > Hi Tommy, > You can try to implement the patches I shared manually by changing the > relevant files in engine and dwh and run engine-setup. > > Let me know if you have any questions. > > Thanks, > Aviv > > > > On Sun, Sep 19, 2021 at 4:56 PM Tommy Sway <sz_cuitao(a)163.com> wrote: > > Thank you! > > > > > > > > > > > > *From:* Aviv Litman <alitman(a)redhat.com> > *Sent:* Sunday, September 19, 2021 3:04 PM > *To:* Tommy Sway <sz_cuitao(a)163.com> > *Subject:* Re: Some errors on the grafana dashboard > > > > Hi Tommy, > There was a bug in the way we calculate hosts CPU: we didn't consider > the count_threads_as_cores option in the calculation. > The count_threads_as_cores column is available only from ovirt-engine > 4.4.6.7 version, and ovirt-dwh 4.4.7. > > Patches: > > ovirt-engine <https://gerrit.ovirt.org/#/c/ovirt-engine/+/114565/> > > ovirt-dwh <https://gerrit.ovirt.org/#/c/ovirt-dwh/+/114568/> > > So you have to update the version to 4.4.7. > I will also add a note in the Blog. > > Feel free to contact me if you have more questions. > > Best, > Aviv > > > > On Tue, Sep 14, 2021 at 11:38 AM Tommy Sway <sz_cuitao(a)163.com> wrote: > > Hello! > > > > I used the JSON file you provided and imported grafana. Before importing, > I replaced the version, because the version of my system is 4.3. > > $ find . -type f -name "*dashboard.json" -exec sed -i -e 's/v4_4_/v4_3_/g' > {} \; > > However, most of the reports are normal, but some reports have similar > errors: > > > > pq: column "count_threads_as_cores" does not exist > > Object > > status:400 > > statusText:"Bad Request" > > data:Object > > results:Object > > message:"pq: column "count_threads_as_cores" does not exist" > > message:"pq: column "count_threads_as_cores" does not exist" > > > > Many of the other reports worked fine, with only a few similar errors. > > Is this caused by version incompatibility? > > After all, 4.4 in the original document was replaced with 4.3 before the > import. > > > > Thank you! > > > > > >

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question about engine deployment success rate
by Henning Sprang 03 Nov '21

03 Nov '21

Hello, I've just inherited a project where we need to bring a prototype of a small Ovirt system (single node or 3 node hyperconverged, with glusterFS on the same machine, a bunch of different VM's ) running in an industrial machine into serial production. This means, we want to build a new 1 or 3 node Ovirt system each day up until 3 times a day. In my tests so far, the failure rate of the Ovirt engine deployment (via the included scripts as well as the web UI) turns out to be pretty high - it's between 40-60%, meaning until we have a running system, we would have to try the installation and/or final engine deployment about 2-4 times until we are successful. So far I could not identify clear error messages that let me tell how to fix the problem. Before going into details of the errors I would like to ask if people deeper into Ovirt would consider this a somewhat normal success rate, or if this indicates we are doing something generally wrong and we should definitely spend a few more hours or maybe days into finding sources of problems. More info about the system and errors * OVirt 4.3.9 (because the prototype was made and verified with that version - would be interesting to know, too, if it's strongly considered to upgrade for more stable installation/deployment) * The errors that appear are changing between the deployment process seeming not to be able to transfer the "LocalHostedEngine" VM to the glusterFS storage to become a "HostedEngine", and the other seems to be when the engine is already up and running, but never being really connected to the Ovirt system, continuously restarting, and also showing XFS filesystem errors in it's dmesg output. Any hints on our chances on getting this solved or requests for more information about the error are welcome - thanks in advance. Henning

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New Install. 3 node HCI using 4.4.8 ISO
by shane.krenz＠gmail.com 02 Nov '21

02 Nov '21

Hello everyone. First time posting. Sorry if this is already been spoken to... I didn't see anything with a quick search that I did. 3 nodes running dual E5-2600 series V4 CPUs with 256G memory in a Hybrid storage config. 2x 1.9TB SSDs and 6x 600G SAS spinners attached to a SAS/SATA HBA. 4x 1G ports. During initial boot from the 4.4.8. ISO oVirt installer I set static IPs, added DNS entries and copied ssh keys copied to each host. First issue with deploying the cluster was complaining about partitions found on sdb even though I reclaimed and deleted everything on all drives. Ended up zero'ing the drives and started over. Then sdb was on the filter list. So I edited the LVM.conf file. now I am stuck on "Gluster brick_t is invalid, must be a file or device" No idea what to do about that one. Also, I am not sure if its actually pulling in the 600G 10k drives into the mix at all. How would I confirm this? First 1.9TB SSD drive Is where I am installing the OS. Should I change this to some other drive or usb stick and have the 2x SSDs as cache and all spinners as capacity data? not sure how all that is supposed to work as I am not too familiar with Gluster. I know Nutanix and vSAN pretty well. I wanted to try oVirt. I am having a MUCH harder time with initial setup. I appreciate any help / suggestions on best practice for my hardware setup.

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c9s - early?
by lejeczek 02 Nov '21

02 Nov '21

hi guys. Though CentOS Stream 9 is available these are its early days - may I ask @devel - how far away oVirt is from this new CStream? many thanks, L.

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The Engine VM (/32) and this host (/32) will not be in the same IP subnet.
by notify.sina＠gmail.com 02 Nov '21

02 Nov '21

Hi list, 'The Engine VM (10.200.30.5/32) and this host (10.200.30.3/32) will not be in the same IP subnet.' This happens when I select a static IP address configuration for the engine. Ive been struggling with setting up ovirt-hosted-engine on CentOS 8 servers in the Equinix network, using hosted-engine --deploy. Why would the setup not want the engine and the host it's being setup on, not be in the same subnet? Can someone please help me understand what prerequisites I am missing?

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Issue upgrading VDSM in 4.4.9
by ling＠aliko.com 02 Nov '21

02 Nov '21

Hello, I am trying to perform an oVirt host upgrade and ran into this issue and looking for advice. If i try to run dnf update vdsm directly: Problem: cannot install the best update candidate for package vdsm-4.40.80.5-1.el8.x86_64 - nothing provides libvirt-daemon-kvm >= 7.6.0-2 needed by vdsm-4.40.90.3-1.el8.x86_64 (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages) After updating ovirt-release to 4.4.9, this is what I see available for libvirt-daemon: [root@vmserver02 yum.repos.d]# dnf list libvirt-daemon-kvm Last metadata expiration check: 2:09:25 ago on Wed 20 Oct 2021 01:28:56 PM PDT.Installed Packageslibvirt-daemon-kvm.x86_64 7.0.0-14.1.el8 @ovirt-4.4-advanced-virtualization And the advance-virtualization repo points to this: [ovirt-4.4-advanced-virtualization] name=Advanced Virtualization packages for $basearch mirrorlist=http://mirrorlist.centos.org/?arch=$basearch&release=8&repo=virt… enabled=1 gpgcheck=1 gpgkey=https://www.centos.org/keys/RPM-GPG-KEY-CentOS-SIG-Virtualization module_hotfixes=1 I am trying this on Centos 8 and also RHEL 8 machines. Both giving the same errors. Thanks.

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creating a network using Rest API
by Pascal D 01 Nov '21

01 Nov '21

I am trying to create a new network using the Rest Api. This network Is for VM and needs to be part of a network label. Here is that Jason I am using. The network gets created but is not part of the network label. When I try to create it using the network labels href I get an error that the user is not authorized to create than resource label even though I am logged as the admin https://xxxxxx.com/ovirt-engine/api/networks { "data_center": { "id":"7eb5bf2a-8729-11e9-96c7-00163e449339" }, "name":"D1-C1-763", "description":"Test network", "mtu":1472, "stp": false, "required":true, "usages":{ "usage":["vm"] }, "vlan":{"id":763}, "network_labels": { "network_label": [{"id": "C1-VLAN"}] } } when assigning a network label I do the following: https://xxxxxx.com/ovirt-engine/api/networks/bc493d18-e3d5-4072-b36d-a42a34… { "Id": "C1-VLAN" } { "detail": "[User is not authorized to perform this action.]", "reason": "Operation Failed" }

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