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Info on python SDK variable definition
by Gianluca Cecchi 27 Feb '20

27 Feb '20

Hello, suppose in a .py using sdk I have my_var1 = 'prefix' then in the workflow I get at runtime another my_var2 that for example has the attribute my_var2.name that equals "suffix" Then I want to define a new variable my_var3 with value "prefix_suffix", where the string "suffix" is known only at runtime, how can I get it? my_var3 = ??? Can I use something similar to what I do when using the print function? print ("My storage domain is %s..." % sd.name) ? Thanks, Gianluca

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oVirt Python SDK and monitor export as OVA task
by Gianluca Cecchi 27 Feb '20

27 Feb '20

Hello, sometimes I have environments (typically with Oracle RDBMS on virtual machines) where there is one boot disk and one (often big, such as 500Gb or more) data disk. The data disk has already its application backup (typically RMAN) and I want to complement it with a backup of only the boot disk of the operating system and VM configuration. I'm almost done completing a script using oVirt Python SDK and sharing for comments. I could be wrong, but I didn't find any ansible module to do this with Ansible playbooks: I can only save all the VM, that in my case wouldn't be necessary and instead time and storage wasting. The basic steps are: - make a snapshot of the target vm, composed only by the boot disk - clone the snapshot - export the clone as OVA - delete clone - delete snapshot There are some things to discuss about, probably when I will share the overall job (such as the name to give to the boot disk, if not using the bootable flag, the way to import the OVA in case of actual need, where you will have to comment out some fs entries related to missing disks, ecc.). The only thing missing is how to monitor the export to ova task that, as with Ansible, it completes almost immediately, while the export is actually altready running. I need to monitor it, so only at its real end I can run the last 2 steps of the above list of tasks. Can you give me any hint? Not found very much in guide or docs on the web. I'm currently using a sleep because my boot disk is about 20Gb in size and I know that in less than 2 minutes it normally completes. The export as ova is very similar to what found in the examples and they don't contain a monitor for it but only the connection.close() call: cloned_vm_service.export_to_path_on_host( host=types.Host(id=host.id), directory = export_as_ova_dir, filename = cloned_vm.name + '.ova' ) Thanks in advance, Gianluca

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EqualLogic SAN controller switchover
by Chris Adams 27 Feb '20

27 Feb '20

How well does oVirt handle an EqualLogic SAN controller switchover event? IIRC that can result in a short iSCSI "pause" (can't remember how long it takes) - I'm not sure what oVirt's threshold before VMs (including the hosted engine) get paused for storage timeouts. I've got a small setup where the active SAN controller's battery has gone bad, so I need to switch to the other controller, and I'm trying to figure out the impact - do I need to shut all VMs (including the engine) down first, will they just briefly pause and then continue, etc. -- Chris Adams <cma(a)cmadams.net>

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oVirt 4.3.8 ovn vms doesn't ping
by Gianluca Cecchi 27 Feb '20

27 Feb '20

Hello, I have an environment with oVirt 4.3.8. All seems ok from a configuration point of view, but if I use OVN based interfaces on two VMs, they are not able to ping, both if I put them on the same host and if I put on different hosts. At this point they are both running on the same host and their only vnic is on ovn172 network (defined as 192.168.172.0/24). I have this manager # ovn-nbctl show switch fc2fc4e8-ff71-4ec3-ba03-536a870cd483 (ovirt-ovn192-1e252228-ade7-47c8-acda-5209be358fcf) switch 87012fa6-ffaa-4fb0-bd91-b3eb7c0a2fc1 (ovirt-ovn193-d43a7928-0dc8-49d3-8755-5d766dff821a) port 8141047d-10c0-41f6-bedc-130552a115ef addresses: ["00:1a:4a:17:01:54 dynamic"] port 90559419-cb8e-45ae-ad61-6c16c4aff598 addresses: ["00:1a:4a:17:01:52 dynamic"] port b3db190f-086a-4c79-99a0-77f811f66c80 addresses: ["00:1a:4a:17:01:53 dynamic"] switch 9e77163a-c4e4-4abf-a554-0388e6b5e4ce (ovirt-ovn172-4ac7ba24-aad5-432d-b1d2-672eaeea7d63) port 3641cae4-18df-4fba-a2bd-7b0c60a87162 addresses: ["00:1a:4a:19:01:59 dynamic"] port aaddc425-3a38-49bf-bfc7-9eaeab82906e addresses: ["00:1a:4a:19:01:58 dynamic"] The two macs correspond to what I see for VMs in web admin gui and at os level of the two VMs. On the host where VMs are running I have: # ovs-vsctl show f1a41e9c-16fb-4aa2-a386-2f366ade4d3c Bridge br-int fail_mode: secure Port "ovn-b8872a-0" Interface "ovn-b8872a-0" type: geneve options: {csum="true", key=flow, remote_ip="10.4.192.34"} Port br-int Interface br-int type: internal Port "vnet0" Interface "vnet0" Port "ovn-1dce5b-0" Interface "ovn-1dce5b-0" type: geneve options: {csum="true", key=flow, remote_ip="10.4.192.32"} Port "vnet1" Interface "vnet1" ovs_version: "2.11.0" So apparently I see the vnet0 and vnet1 ports associated with the two VMs How can I check more in depth the reason why they don't ping? Both VMs are CentOS 8.1 but I don't know if it is relevant. Thanks, Gianluca

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oVirt 4.3.8 and almost unpredictable export as ova duration
by Gianluca Cecchi 27 Feb '20

27 Feb '20

Hello, on a test oVirt environment I have export as ova task that, based on same disk size (20Gb) it could last 35 seconds or 11 minutes.... During the long lasting test I see on host that almost all and only I/O (in the measure of 6-7 MB/s) is done by a [loop0] process that has ppid 2 and apparently (with "fuser" command on /dev/loop0 file) is uses by noone. Is it implicitly used by the "qemu-img convert " command of the export as ova? Why so great difference in elapsed time? The disk is the same of the same VM. The oVirt env has almost nothing running only 2 CentOS 8.1 VMs doing nothing. Same host used for export as ova in the two runs in a 20 minutes timeframe. As the path for OVA I'm temporarily using a connected export domain subdirectory, using directory='/rhev/data-center/mnt/10.4.192.69:_export_ovirt/dump' Donna if it can have a role in the problem... Thanks, Gianluca

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Re: Windows deployment
by Dominik Holler 27 Feb '20

27 Feb '20

On Wed, Feb 26, 2020 at 11:45 PM <eevans(a)digitaldatatechs.com> wrote: > It is a Red Hat Virtio Ethernet Adapter. > > > Would a e1000 or rtl8139 work for your scenario? > Eric Evans > > Digital Data Services LLC. > > 304.660.9080 > > > > *From:* Dominik Holler <dholler(a)redhat.com> > *Sent:* Wednesday, February 26, 2020 11:55 AM > *To:* eevans(a)digitaldatatechs.com > *Cc:* users <users(a)ovirt.org> > *Subject:* [ovirt-users] Re: Windows deployment > > > > > > > > On Wed, Feb 26, 2020 at 4:45 PM <eevans(a)digitaldatatechs.com> wrote: > > I have a Windows Deployment server that works with Hyper-V. I am tryng to > see if it will bare metal provision to Ovirt. > > > > Do you want to provision Windows into an oVirt VM? > > > > I have the necessary drivers loaded > > > > I am not familiar with the Windows deployment server. > > Would you help me to understand which drivers are loaded to what? > > > > and initially it gets an IP and starts the installation. > > > > I understand that the windows installer is starting. Where does he get the > files from? > > > > When it comes to the screen starting setup, I get an IP error. I have > included a screenshot. > > > > Might this be related to network drivers? > > If Windows in an oVirt VM, what is the type of the virtual NIC? > > Maybe using the e1000 or rtl8139 as type of the virtual NIC helps until > the VirtIO drivers are ins > talled? > > > > Has anyone see this before? > > I also considered provisioning from Foreman but I would rather use what I > have instead of recreating the entire installation. > Any help would be appreciated. > > Here is a link to the actual error: > > ftp://ftp.digitaldatatechs.com/pub/Windows%20Provision.jpg > _______________________________________________ > 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/BGGJTCK7PZKCU… > > > >

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Re: Huge increase of CPU load on hosted engine VM after upgrade to 4.3.8 and cluster compatibility version
by Florian Schmid 27 Feb '20

27 Feb '20

Hi, no, fortunately, the bug didn't came back. It looks like, that the engine needs its time to settle after changing the cluster compatibility version. After about 2 hours, the CPU load was as low as before. The time to load the VM UI takes a little bit more time, but I think this is also normal, because all VMs still have the orange triangle and need a reboot. Sorry for the false positive, but I was really afraid about the high load. BR Florian Von: "p staniforth" <P.Staniforth(a)leedsbeckett.ac.uk> An: "Florian Schmid" <fschmid(a)ubimet.com>, "users" <users(a)ovirt.org> Gesendet: Donnerstag, 6. Februar 2020 18:22:51 Betreff: Re: Huge increase of CPU load on hosted engine VM after upgrade to 4.3.8 and cluster compatibility version Has this bug come back engine.log flooded with "Field 'foo' can not be updated when status is 'Up'" [ https://lists.ovirt.org/archives/list/users@ovirt.org/thread/MKFQRCKHRT6NJU… | https://lists.ovirt.org/archives/list/users@ovirt.org/thread/MKFQRCKHRT6NJU… ] Regards, Paul S. From: Florian Schmid <fschmid(a)ubimet.com> Sent: 06 February 2020 15:53 To: users <users(a)ovirt.org> Subject: [ovirt-users] Huge increase of CPU load on hosted engine VM after upgrade to 4.3.8 and cluster compatibility version Caution External Mail: Do not click any links or open any attachments unless you trust the sender and know that the content is safe. Hi, I have upgraded yesterday one of our ovirt environments from 4.2.8 to 4.3.8. We have a hosted engine, 25 hosts and about 150 VMs running there. After upgrading the cluster compatibility version from 4.2 to 4.3, I have seen a huge increase of CPU load on the engine VM. The engine had 4 cores (16GB mem) and never had load issues, but after the upgrade, the system has a load of 6 and more. I have increased the CPUs to 8, because working in the UI was impossible. I have noticed, that the load always increase, when I load the VM UI tab, where now all VMs have the orange triangle with pending changes: Custom compatibility version The problem I have, is, that I can't reboot now all VMs, maybe in the next 3 or 4 weeks. Working now with the UI is quite problematic, because of the slowness. The engine VM was already rebooted, but didn't solve the problem. What logs do you need and is there a workaround available? I have some more oVirt environments to upgrade, all with even more VMs. BR Florian _______________________________________________ Users mailing list -- users(a)ovirt.org To unsubscribe send an email to users-leave(a)ovirt.org Privacy Statement: [ https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ovirt… | https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ovirt… ] oVirt Code of Conduct: [ https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ovirt… | https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ovirt… ] List Archives: [ https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.ovi… | https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.ovi… ] To view the terms under which this email is distributed, please go to:- [ http://leedsbeckett.ac.uk/disclaimer/email/ | http://leedsbeckett.ac.uk/disclaimer/email/ ]

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ldaps-config
by Budur Nagaraju 27 Feb '20

27 Feb '20

Hi Can someone help me in configuring ldaps in oVirt Engine 4.x ? Thanks, Nagaraju

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oVirt Storage quota questions
by Vrgotic, Marko 27 Feb '20

27 Feb '20

Dear oVirt, My platform is running SHE oVirt version 4.3.8. Why is my StorageQuota consumption still showing “ 0 out of 3700” ? Did I forget something? [A screenshot of a cell phone Description automatically generated] I have setup storage quota “StorageQuota” for one of domains. It has 4400GB actual storage. * Quota is set to 3700GB. * Treshold for Quota is 85% and Grace is set to 110%. * Datacenter Quota is set to Enforced * The template image has been changed from Default to StorageQuota * I see that Vms created from Template are automatically assigned StorageQuota To present the following situation in screenshots: * Actual Quota: [A screenshot of a social media post Description automatically generated] * VMs (more than on the screenshot) which have the StorageQuota assigned: [A screenshot of a social media post Description automatically generated] * Templates which have the StorageQuota assigned [cid:image004.png@01D5ED57.6C02ACF0] Kindly awaiting your reply. Additionally – is there an easy&safe way to update all running VMs quota? ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 e: m.vrgotic(a)activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message.

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Need steps to downgrade engine from 4.4 to 4.3.
by Ritesh Chikatwar 26 Feb '20

26 Feb '20

Hello all.. Is there any steps to downgrade engine from 4.4 to 4.3 Any help will appreciate. Ritesh

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