March 2020 - Users - oVirt List Archives

Re: safe to have perf and dstat on ovirt node?
by Gianluca Cecchi 24 Mar '20

24 Mar '20

On Mon, Mar 23, 2020 at 11:56 PM Shirly Radco <sradco(a)redhat.com> wrote: > Hi, > > I can't answer about perf, But would Collectd be useful for you? > It is already installed on the hosts and engine. > > Best, > Shirly > > Thanks for your answer Shirly, do you mean implementing Metrics Store? Gianluca

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connect from public to private network
by nikkognt＠gmail.com 24 Mar '20

24 Mar '20

Good morning, I have an Ovirt infrastructure and its configured in private network. How can I connect from public network to web portal and the virtual machines via spice client? My infrastructure is configured by 1 engine and 2 hosts. How can I do? Suggestions? Thanks! Best regards Nikkognt

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Data Center, Cluster and Storage Domains show as "Down" after backup and restore
by anton.louw＠voxtelecom.co.za 24 Mar '20

24 Mar '20

Hi Everybody, So I did a full backup of our HE, redeployed and restored. After the restore, I ran engine-setup on the newly deployed HE. I can access the the environment as per normal, the only issue is that everything still shows as "down", this includes hosts and VMs? Is there something I need to do in order to get everything to display as "Up" again? Thanks

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storage allocation of template
by yam yam 24 Mar '20

24 Mar '20

Hello, I want to know whether a base disk image is physically copied whenever the VM is created from a template. I've just created a VM based on template with 1 disk and checked VM's virtual disk images. there were (1)base image copied? from the template, (2)new delta image. Here, (1) image was identical to that of the template and I know that image is used as read-only mode. So, I am wondering why base (disk) image is inefficiently copied instead of directly referencing template's image as backing file.

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safe to have perf and dstat on ovirt node?
by Gianluca Cecchi 23 Mar '20

23 Mar '20

Hello, I would need to have on ovirt node these three packages: - ipmitool - perf - dstat Comparing latest RHVH (4.3.8) and latest ovirt-node-ng (4.3.9) I see that: - ipmitool is present on both - perf is present as an installable package in RHVH and not in ovirt-node-ng - dstat is not available in any of them Why the difference about perf? Is it safe to install perf and dstat on ovirt-node-ng taking them from CentOS updates? This is for a lab and the packages would be used to compute some metrics about performance of the node. Thanks, Gianluca

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Re: Moving Hosted Engine
by Joseph Goldman 23 Mar '20

23 Mar '20

Hi Anton, I believe so - but I believe you can do a hosted-engine deploy with the backup file specified so it auto-restores with it. I need to try it on a test system I haven't done much DR testing yet. My builds have been rushed into production due to time constraints, and although I backup and ship off-site so I have it all I actually haven't done a full breakdown and re-restore yet :/ I'll be interested to know how you go, if you dont mind. Thanks, Joe On 2020-03-23 3:32 PM, Anton Louw wrote: > > > Hi Joseph, > > Thanks for the reply. So in short, the process will then be to 1) Take > a backup of the Hosted Engine, 2) Do a clean-up of the Hosted Engine, > and then lastly redeploy on one of the nodes using hosted-engine > deploy? After that then I will do a restore? > > Thanks > > > *Anton Louw* > *Cloud Engineer: Storage and Virtualization* at *Vox* > ------------------------------------------------------------------------ > *T:* 087 805 0000 | *D:* 087 805 1572 > *M:* N/A > *E:* anton.louw(a)voxtelecom.co.za <mailto:anton.louw@voxtelecom.co.za> > *A:* Rutherford Estate, 1 Scott Street, Waverley, Johannesburg > www.vox.co.za <http://www.vox.co.za> > > F <https://www.facebook.com/voxtelecomZA> > > > T <https://www.twitter.com/voxtelecom> > > > I <https://www.instagram.com/voxtelecomza/> > > > L <https://www.linkedin.com/company/voxtelecom> > > > Y <https://www.youtube.com/user/VoxTelecom> > > #VoxBrand <https://www.vox.co.za/fibre/fibre-to-the-home/?prod=HOME> > > > *Disclaimer* > > The contents of this email are confidential to the sender and the > intended recipient. Unless the contents are clearly and entirely of a > personal nature, they are subject to copyright in favour of the > holding company of the Vox group of companies. Any recipient who > receives this email in error should immediately report the error to > the sender and permanently delete this email from all storage devices. > > This email has been scanned for viruses and malware, and may have been > automatically archived by *Mimecast Ltd*, an innovator in Software as > a Service (SaaS) for business. Providing a *safer* and *more useful* > place for your human generated data. Specializing in; Security, > archiving and compliance. To find out more Click Here > <https://www.voxtelecom.co.za/security/mimecast/?prod=Enterprise>. > > > > *From:*Joseph Goldman <joseph(a)goldman.id.au> > *Sent:* 20 March 2020 14:23 > *To:* users(a)ovirt.org > *Subject:* [ovirt-users] Re: Moving Hosted Engine > > It is my understanding that yes taking a full backup and then redploying > into a new storage domain using the backup is the correct way - I dont > think you'd need a new physical server for it though unless you mean you > are running on bare-metal. > > On 2020-03-20 11:04 PM, anton.louw(a)voxtelecom.co.za > <mailto:anton.louw@voxtelecom.co.za> wrote: > > Hi All, > > > > I am in serious need of some help. We currently have our Hosted > Engine running on a Storage Domain, but that storage Domain is > connected to a San that needs to be decommissioned. What would I need > to do in order to get my Hosted Engine running on a different Storage > Domain? > > > > Will I need to build a new CentOS server, download and Install the > oVirt Setup, and then restore the backup that I took of my original > Hosted Engine, using “engine-backup --mode=backup”? > > > > I tried looking around at backup solutions that would restore the > whole VM to a different Storage Domain, but I can’t seem to find anything. > > > > Any advise would be greatly appreciated. > > _______________________________________________ > > Users mailing list -- users(a)ovirt.org <mailto:users@ovirt.org> > > To unsubscribe send an email to users-leave(a)ovirt.org > <mailto:users-leave@ovirt.org> > > Privacy Statement: https://www.ovirt.org/privacy-policy.html > <https://www.ovirt.org/privacy-policy.html> > > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > <https://www.ovirt.org/community/about/community-guidelines> > > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/TGI2T46W62JE4… > <https://lists.ovirt.org/archives/list/users@ovirt.org/message/TGI2T46W62JE4…> > _______________________________________________ > Users mailing list -- users(a)ovirt.org <mailto:users@ovirt.org> > To unsubscribe send an email to users-leave(a)ovirt.org > <mailto:users-leave@ovirt.org> > Privacy Statement: https://www.ovirt.org/privacy-policy.html > <https://www.ovirt.org/privacy-policy.html> > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > <https://www.ovirt.org/community/about/community-guidelines/> > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/NYLHUQPK72QUN… > <https://lists.ovirt.org/archives/list/users@ovirt.org/message/NYLHUQPK72QUN…> >

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Can't connect storage domain when using VLAN
by Brian Dumont 23 Mar '20

23 Mar '20

Hello, First post! I'm trying to add a nfs storage domain with VLAN tagging turned on the logical network. It errors out with "Error while executing action Add Storage Connection: Problem while trying to mount target". I am able to attach to this nfs export without vlan tagging. I have also verified that I can attach to this nfs export with vlan tagging using a non-ovirt rhel host. Here's my config: - Logical network created at Data Center - Enable Vlan Tagging - ID 15 - Not a VM Network - Cluster status - Network - Up - Assign all - checked - Require - checked - no other boxes checked Host status - Host 1 and Host 2 each show - Status - up - BootP - None (same issue with static IP's) - LinK Layer info shows VLAN ID 15 on switch port Appreciate any help! Brian

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bonding and SR-IOV
by Nathanaël Blanchet 23 Mar '20

23 Mar '20

Hello, I successfully attached VF to a VM on a single PF nic following https://access.redhat.com/articles/3215851. I want the vm with VF to be migratable, but the nic hotplug/replug is too long. So I tested the mode 1 bonding (active-backup) with a virtio nic following this https://www.ovirt.org/develop/release-management/features/network/liveMigra… On a single PF, the resilience tests with migration are correct with 1 or 2 second downtime. But now I want to do the same on a typical host with LACP PF: Considering vlan13, I must bond a virtio nic on a brv13/brv13 profile with SR-IOV/brv13 profile as the primary interface. Everything work when the primary interface is brv13/brv13 profile (work as a traditionnal bridge config), but not when changing on the SR-IOV/brv13 profile. I know in this case that the SR-IOV profile is connected to a LACP interface, but does it mean that I have to configure the VF vnic in the VM to be part of the LACP(bond1) as a single member and in that case to do active-backup bond0 with two members bond1 and brv13 nic? Hope to be clear enough. Thanks for your help. -- Nathanaël Blanchet Supervision réseau SIRE 227 avenue Professeur-Jean-Louis-Viala 34193 MONTPELLIER CEDEX 5 Tél. 33 (0)4 67 54 84 55 Fax 33 (0)4 67 54 84 14 blanchet(a)abes.fr

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Moving Hosted Engine
by anton.louw＠voxtelecom.co.za 23 Mar '20

23 Mar '20

Hi All, I am in serious need of some help. We currently have our Hosted Engine running on a Storage Domain, but that storage Domain is connected to a San that needs to be decommissioned. What would I need to do in order to get my Hosted Engine running on a different Storage Domain? Will I need to build a new CentOS server, download and Install the oVirt Setup, and then restore the backup that I took of my original Hosted Engine, using “engine-backup --mode=backup”? I tried looking around at backup solutions that would restore the whole VM to a different Storage Domain, but I can’t seem to find anything. Any advise would be greatly appreciated.

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When and how to change VDSM REVISION in multipath.conf
by Gianluca Cecchi 22 Mar '20

22 Mar '20

Hello, I created some hosts at time of 4.3.3 or similar and connecting to iSCSI I set this in multipath.conf to specify customization " # VDSM REVISION 1.5 # VDSM PRIVATE # This file is managed by vdsm. ... " Then I updated the environment gradually to 4.3.8 but of course the file remained the same because of its configuration and the "PRIVATE" label. Now I install new hosts in 4.3.8 and I see that by default they have these lines " # VDSM REVISION 1.8 # This file is managed by vdsm. " So the question is: suppose I customize the multipath.conf file using the "# VDSM PRIVATE" line, how do I have to manage the REVISION number as time goes on and I execute minor updates to hosts? What will it change between 1.5 above and 1.8? Any impact if I leave 1.5 for example across all my 4.3.8 hosts? Thanks in advance for clarification, Gianluca

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