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oVirt conference 2019 report
by Sandro Bonazzola 21 Oct '19

21 Oct '19

Wondering how oVirt conference 2019 was? See here[1] the report! Blog post includes recordings of the morning sessions and link to all slides. Afternoon session recordings will be made available soon as well. [1] https://blogs.ovirt.org/2019/10/ovirt-conference-2019-report/ -- Sandro Bonazzola MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV Red Hat EMEA <https://www.redhat.com/> sbonazzo(a)redhat.com <https://www.redhat.com/>*Red Hat respects your work life balance. Therefore there is no need to answer this email out of your office hours.*

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Help/guidelines/ideas on how to create new hosted-engine on final server with old config
by Lars Bækmark 21 Oct '19

21 Oct '19

I'm looking for guidelines/ideas for moving/migrating/Hosted-engine from the initial install with local storage, to the "Final" server. Initial it was a "Test" to see if this will work or not, but this has now become the production, where the initial host named "ovirt" that is hosting the hosted-engine on local storage is "just" doing that. My hosted-engine is called "ovirtmgr" and I created a new host to run Virtual machines called "Hermod" - getting better in the naming thing, right? This test was so successful that I converted the old Xen/Oracle based host to CentOS 7 - the same as host Ovirt and Hermod: Linux hermod 3.10.0-1062.1.1.el7.x86_64 #1 SMP Fri Sep 13 22:55:44 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux <https://www.facebook.com/linux.lanka?fref=gs&__tn__=%2CdK-R-R&eid=ARDadyp9k…> Linux fernis 3.10.0-1062.el7.x86_64 #1 SMP Wed Aug 7 18:08:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux oVirt version is: 4.3.5.4-1.el7 I want to move the hosted-engine to Fenris and at the same time use a NFS share for that. I can shut the whole setup down, as long as it runs again in daytime. I do know that I should have started with the hosted-engine in the correct place, but that's not the case anymore. There are eleven VM’s in total Can anyone suggest a plan on how to move/create a new hosted-engine on my server Fenris? The history of the old server is not important, I just want the hosted-engine on fenris using NFS share I did find some sugesting on the web, but they all look quite complicated: https://www.ovirt.org/…/engine/migrate-to-hosted-engine.html <https://l.facebook.com/l.php?u=https%3A%2F%2Fwww.ovirt.org%2Fdevelop%2Fdeve…> I just love the product! I'm now running VM's 2-3 times faster by converting from Xen to KVM, but still use the same storage and server! :-D Appreciate any help! 😀 /Lars Lars Bækmark lars(a)baekmark.dk <mailto:lars@baekmark.dk> +45 2241 0500 Mølleengen 6 3550 Slangerup Danmark ------------------------------------- Oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall. Torque is how far you take the wall with you

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Re: Fencing Agent using SuperMicro IPMI Fails
by Strahil 21 Oct '19

21 Oct '19

Try switching off the lanplus (maybe remove it at all). Best Regards, Strahil NikolovOn Oct 20, 2019 20:14, jeremy_tourville(a)hotmail.com wrote: > > I am trying to setup my power management fencing agent on the host. > > Address: I put in the IP address of the web page for IPMI. (Which does work via my web browser without issue) > Username: ADMIN > PW: my_password > Type: ipmilan > Options: lanplus=1 > > I click on the test button and it fails. > > Board Manufacturer: Supermicro > Board Product Name: X11DPi-N > > Any suggestions for troubleshooting? > > > _______________________________________________ > 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/OCFKLRXAOPG4F…

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Fencing Agent using SuperMicro IPMI Fails
by jeremy_tourville＠hotmail.com 20 Oct '19

20 Oct '19

I am trying to setup my power management fencing agent on the host. Address: I put in the IP address of the web page for IPMI. (Which does work via my web browser without issue) Username: ADMIN PW: my_password Type: ipmilan Options: lanplus=1 I click on the test button and it fails. Board Manufacturer: Supermicro Board Product Name: X11DPi-N Any suggestions for troubleshooting?

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ovirt-ha-broker ERROR Failed to getVdsStats: No 'network' in result
by Strahil Nikolov 20 Oct '19

20 Oct '19

Hi All, After a host reinstall + deploy (UI -> Hosts -> Management -> Reinstall) I see the following error in the ovirt-ha-broker : ovirt-ha-broker mgmt_bridge.MgmtBridge ERROR Failed to getVdsStats: No 'network' in result Anyone got an idea what is it going about ? Should I worry about that message ? Best Regards,Strahil Nikolov

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Re: improve file operation speed in HCI
by Strahil 18 Oct '19

18 Oct '19

If you seek performance, then set tuned-adm profile in the VM to 'throughput-performance' and scheduler either 'noop' or 'none' (depends if multi queue is enabled). Usually, if yhou crete the gluster cluster via cockpit and then install the hosted engine via cockpit again - all options on your gluster volumes are the most optimal you need. Best Rregards, Strahil NikolovOn Oct 18, 2019 15:30, Jayme <jaymef(a)gmail.com> wrote: > > My VMs are using virtual-guest tuned profiles and ovirt node hosts are using virtual-host profile. Those seem to be good defaults from what I'm looking at. I will test I/O schedulers to see if that makes any difference and also try out high performance VM profile (I was staying away from that profile due to loss of high-availability). > > On Fri, Oct 18, 2019 at 9:18 AM Jayme <jaymef(a)gmail.com> wrote: >> >> The VMs are basically as stock CentOS 7x as you can get. There are so many layers to deal with in HCI it's difficult to know where to begin with tuning. I was focusing mainly on gluster. Is it recommended to do tuning directly on oVirt host nodes as well such as I/O scheduler and tuned-adm profiles etc? >> >> On Fri, Oct 18, 2019 at 6:55 AM Strahil <hunter86_bg(a)yahoo.com> wrote: >>> >>> What is your I/O scheduler and tuned-adm profile in the VM. >>> RedHat based VMs use deadline which prioritizes reads before writes -> you can use 'noop' or 'none'. >>> >>> For profile, you can use high-performance. >>> >>> Best Regards, >>> Strahil Nikolov >>> >>> On Oct 18, 2019 06:45, Jayme <jaymef(a)gmail.com> wrote: >>>> >>>> I'm wondering if anyone has any tips to improve file/directory operations in HCI replica 3 (no arbtr) configuration with SSDs and 10Gbe storage network. >>>> >>>> I am running stock optimize for virt store volume settings currently and am wondering what if any improvements I can make for VM write speed and more specifically anything I can tune to increase performance of small file operations such as copying, untar, npm installs etc. >>>> >>>> For some context, I'm seeing ~50MB/s write speeds inner VM with: dd if=/dev/zero of=./test bs=512k count=2048 oflag=direct -- I am not sure how this compares to other HCI setups, I feel like it should be higher with SSD backed storage. Same command from gluster mount is over 400MB/s >>>> >>>> I've read some things about meta data caching, read ahead and other options. There are so many and I'm not sure where to start, I'm also not sure which could potentially have a negative impact on VM stability/reliability. >>>> >>>> Here are options for one of my volumes: >>>> >>>> Volume Name: prod_b >>>> Type: Replicate >>>> Volume ID: c3e7447e-8514-4e4a-9ff5-a648fe6aa537 >>>> Status: Started >>>> Snapshot Count: 0 >>>> Number of Bricks: 1 x 3 = 3 >>>> Transport-type: tcp >>>> Bricks: >>>> Brick1: gluster0.example.com:/gluster_bricks/prod_b/prod_b >>>> Brick2: gluster1.example.com:/gluster_bricks/prod_b/prod_b >>>> Brick3: gluster2.example.com:/gluster_bricks/prod_b/prod_b >>>> Options Reconfigured: >>>> server.event-threads: 4 >>>> client.event-threads: 4 >>>> performance.client-io-threads: on >>>> nfs.disable: on >>>> transport.address-family: inet >>>> performance.quick-read: off >>>> performance.read-ahead: off >>>> performance.io-cache: off >>>> performance.low-prio-threads: 32 >>>> network.remote-dio: off >>>> cluster.eager-lock: enable >>>> cluster.quorum-type: auto >>>> cluster.server-quorum-type: server >>>> cluster.data-self-heal-algorithm: full >>>> cluster.locking-scheme: granular >>>> cluster.shd-max-threads: 8 >>>> cluster.shd-wait-qlength: 10000 >>>> features.shard: on >>>> user.cifs: off >>>> storage.owner-uid: 36 >>>> storage.owner-gid: 36 >>>> network.ping-timeout: 30 >>>> performance.strict-o-direct: on >>>> cluster.granular-entry-heal: enable >>>> server.allow-insecure: on >>>> cluster.choose-local: off >>>> >>>>

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HE deployment failing - FAILED! => {"changed": false, "msg": "network default not found"}
by Parth Dhanjal 18 Oct '19

18 Oct '19

Hey! I am trying a static IP deployment. But the HE deployment fails during the VM preparation step and throws the following error - [ INFO ] TASK [ovirt.hosted_engine_setup : Parse libvirt default network configuration] [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "msg": "network default not found"} I tried restarting the network service, but the error is still persisting. Upon checking the logs, I can find the following https://pastebin.com/MB6GrLKA Has anyone else faced this issue? Regards Parth Dhanjal

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Re: Error updating package in engine
by Strahil 18 Oct '19

18 Oct '19

You can also use 'package-cleanup --cleandupes' to remove duplicate packages. Best Regards, Strahil NikolovOn Oct 18, 2019 10:15, Gianluca Cecchi <gianluca.cecchi(a)gmail.com> wrote: > > On Fri, Oct 18, 2019 at 8:28 AM karli <karli(a)inparadise.se> wrote: >> >> Hey guys! >> >> I got a wierd issue today doing 'yum upgrade' I'm hoping you can help >> me with. The transaction failed because of systemd packages. I can't >> update systemd packages because they're already the latest, but old >> versions are still around because of ovirt related dependencies: >> >> # rpm -q systemd >> systemd-219-62.el7_6.9.x86_64 >> systemd-219-67.el7_7.1.x86_64 >> # rpm -e systemd-219-62.el7_6.9.x86_64 >> error: Failed dependencies: >> systemd = 219-62.el7_6.9 is needed by (installed) systemd- >> python-219-62.el7_6.9.x86_64 >> # rpm -e systemd-python-219-62.el7_6.9.x86_64 >> error: Failed dependencies: >> systemd-python is needed by (installed) ovirt-imageio-proxy- >> 1.5.1-0.el7.noarch >> >> Is this something you are aware of or are am I a special little >> snowflake? :) >> >> /K >> > > Possibly you have an incomplete transaction in the past that didn't clean the old systemd? > If you run > yum-complete-transaction > what do you get as output of candidate removals? > Gianluca

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Error updating package in engine
by karli 18 Oct '19

18 Oct '19

Hey guys! I got a wierd issue today doing 'yum upgrade' I'm hoping you can help me with. The transaction failed because of systemd packages. I can't update systemd packages because they're already the latest, but old versions are still around because of ovirt related dependencies: # rpm -q systemd systemd-219-62.el7_6.9.x86_64 systemd-219-67.el7_7.1.x86_64 # rpm -e systemd-219-62.el7_6.9.x86_64 error: Failed dependencies: systemd = 219-62.el7_6.9 is needed by (installed) systemd- python-219-62.el7_6.9.x86_64 # rpm -e systemd-python-219-62.el7_6.9.x86_64 error: Failed dependencies: systemd-python is needed by (installed) ovirt-imageio-proxy- 1.5.1-0.el7.noarch Is this something you are aware of or are am I a special little snowflake? :) /K

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VM unable to control via mouse and keyboard
by Jess Zanne Uy 18 Oct '19

18 Oct '19

Hi, I have added new VM for my first time (Ubuntu 18 LTS) I tried to run thru SPICE remote server but i can't click the button inside VM I'm stuck with the start boot menu. [image: image.png] [image: image.png] Thanks, Jess

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