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ovirt 3.8 to ovirt 4.2 Migration.
by techieim 15 Jul '18

15 Jul '18

Hello Team Ovirt, We are running Ovirt3.8 version in our prod, we want to upgrade to 3.8 to 4.2. At present we have 2 (hyp A & hyp B)physical host ovirt 3.8 is running with self hosted engine with data domain and iso one cluster and data center. What we were thing do this migration in following fashion. Plan A. 1. Attach export domain present infra. 2. Take backup all of running vm as export. 3. Detach export domain 4. Detach hyp B from cluster and data center 5. Install fresh ovirt 4.2 iso on hyp B 6. Install self hosted engine 7. Attach Data Domain 8. Attach Export Domain which was use in ovirt 3.8 9. Import all vm's from there to new ovirt 4.2 10. Once all the vm's got up and running poweroff hyp A 11. Install fresh ovirt 4.2 iso on hyp A and attach cluster. Plan B. 1. Attach export domain present infra. 2. Take backup all of running vm as export. 3. Detach export domain 4. Detach hyp B from cluster and data center 5. Install fresh ovirt 4.2 iso on hyp B 6. Install self hosted engine 7. Attach Data Domain 8. Export from ovirt 3.8 to ovirt 4.2 9. Once all the vm's got up and running poweroff hyp A 10. Install fresh ovirt 4.2 iso on hyp A and attach cluster. Thank a ton in advance we may be wrong with above step help us to win this migration. Regards Techieim

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[ANN] oVirt 4.2.5 Second Release Candidate is now available
by Lev Veyde 15 Jul '18

15 Jul '18

The oVirt Project is pleased to announce the availability of the oVirt 4.2.5 Second Release Candidate, as of July 15th, 2018. This update is a release candidate of the fifth in a series of stabilization updates to the 4.2 series. This is pre-release software. This pre-release should not to be used in production. This release is available now for: * Red Hat Enterprise Linux 7.5 or later * CentOS Linux (or similar) 7.5 or later This release supports Hypervisor Hosts running: * Red Hat Enterprise Linux 7.5 or later * CentOS Linux (or similar) 7.5 or later See the release notes [1] for installation / upgrade instructions and a list of new features and bugs fixed. Notes: - oVirt Appliance is available - oVirt Node is available [2] Additional Resources: * Read more about the oVirt 4.2.5 release highlights: http://www.ovirt.org/release/4.2.5/ * Get more oVirt Project updates on Twitter: https://twitter.com/ovirt * Check out the latest project news on the oVirt blog: http://www.ovirt.org/blog/ [1] http://www.ovirt.org/release/4.2.5/ [2] http://resources.ovirt.org/pub/ovirt-4.2-pre/iso/ -- Lev Veyde Software Engineer, RHCE | RHCVA | MCITP Red Hat Israel <https://www.redhat.com> lev(a)redhat.com | lveyde(a)redhat.com <https://red.ht/sig> TRIED. TESTED. TRUSTED. <https://redhat.com/trusted>

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oVirt reports using Grafana
by Karli Sjöberg 15 Jul '18

15 Jul '18

Heya! I've been whishing for reports in oVirt ever since the old 'Jasper Reports' was removed. For an Enterprise, having pretty graphs to look at is a must. Searching the subject, I've found this[*] and have managed to get it installed OK but having issues trying to follow the guide setting it up. First of all, I think the guide should have at least mentioned that 'pg_hba.conf' needs to be edited for the read only user to be able to connect to the database, I scratched my head around that for a while before I got it. When I first type in the query example, I got syntax errors: 'pq: syntax error at or near "$"'. I continued anyways since I figured it would be solved at a later point, which turned out to be true, since the next step is to use the "Templating feature" to add variables. Unfortunately this doesn't go so well, even though I followed the instructions very carefully. After hitting save on the first variable I am rewarded with the error message: 'Template variables could not be initialized: pq: column "en_us" does not exist.' Are the queries stated in the guide still correct? This is for 'user_locale': "SELECT DISTINCT language_code from enum_translator" [*]:https://www.ovirt.org/blog/2018/01/ovirt-report-using-grafana/ TIA /K

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new setup would like some advise on implementetion
by Georgios Vasilopoulos 14 Jul '18

14 Jul '18

Hello! I would like to read your thoughts regarding a new implementation we are about to do at work Our infrastructure is as follows There are 9 servers who will be used for running vm's Network is 2x10G + 4x1G ethernet per server each has 2x 10C xeon processors and 192GB RAM and 2x 300GB 10K Enterprise SAS 6Gbps, Hot Swap HDD There are 3 servers who will be used for storage. Network is 2x10G + 4x1G ethernet per server each has 2x 8c Xeon processors with 128GB RAM 2x 300GB 10000RPM, 2.5", Serial Attached SCSI (SAS), Hot Swap 6x 200GB WesternDigital HGST ultrastar HUSMM1620ASS200 ssd Each server has a jbod box connected to the server through sas interface 12x 4TB The ovirt installation is expected to run 250-200 VM's on maximum load. Expected to run on a big VM there is our mail server which is pretty loaded, has about 50000 registred users and about half of them are pretty active. What I'm currently thinking is : have hosted vm on compute servers storage, as a stand alone non managed volume of about 150GB. but I would like the engine to be stored on more than 3 servers. Any thoughts ? On the vm storage since high availability is a must I will probably set the servers in raid6 with a spare each and then I will do 3 volumes(2 data bricks + 1 arbiter brick on each server) on glusterfs replica 3 arbiter 1. This will give me about 36TB usable per storage server. I'm highly concerned on how glusterfs will perform regarding the email server. Right now email server is on a vm running on KVM and it gets it's storage from an EMC storage. I'm not expecting Gluster to perform as the EMC storage but I would like to know if it can handle it. I'm thinking of dedicating a gluster volume exclusively Is it better to give to the email vm the gluster volume as a disk(s) from ovirt or directly mount it through the vm? ovirt will force the use of gfapi if I set it on the engine. on the other hand if I use this, how sharding will perform. On the other hand, If I mount it as a glusterfs volume directly on the vm how will it perform through fuse? I have 6x200gb ssd's per storage server. Will it do any good to add these as a tiering volume? What should the shard block size be in that case should it be smaller to utilise the ssd's better ? Will performance be better if I use ceph through iscsi with multipath? I read that ceph needs more nodes to perform suitably and that iscsi adds considerable overhead. I'd love to read your thoughts on this.

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Problem with following host link for vm list using Java SDK.
by dchambers＠bugfixer.net 13 Jul '18

13 Jul '18

When trying to do VM list using the 4.2.4 Java SDK against a 4.2.4 engine, I am getting an error while trying to follow the host link to get host info. Any suggestions on fixing this? List<Vm> vms = vmsService.list() .follow("host") .send().vms(); Exception in thread "main" org.ovirt.engine.sdk4.Error: Failed to send request at org.ovirt.engine.sdk4.internal.HttpConnection.send(HttpConnection.java:255) at org.ovirt.engine.sdk4.internal.HttpConnection.send(HttpConnection.java:229) at org.ovirt.engine.sdk4.internal.services.VmsServiceImpl$ListRequestImpl.send(VmsServiceImpl.java:563) at org.ovirt.engine.sdk4.internal.services.VmsServiceImpl$ListRequestImpl.send(VmsServiceImpl.java:477) at com.foo.ovirt.test.VMList.main(VMList.java:59) Caused by: org.ovirt.engine.sdk4.Error: The response content type 'text/html;charset=UTF-8' isn't the expected XML at org.ovirt.engine.sdk4.internal.HttpConnection.checkContentType(HttpConnection.java:287) at org.ovirt.engine.sdk4.internal.HttpConnection.send(HttpConnection.java:251) ... 4 more

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Host reboot failed
by Nicolas Ecarnot 13 Jul '18

13 Jul '18

Hello, [oVirt 4.2.4.5-1.el7] Sequence : - Among 7 active UP hosts, one of them runs zero VM - On this (still in UP state) host, I run a SSH-restart via the web GUI - The host gracefully shuts down then reboots, with no issue - In the web GUI, as in real life, the host stays in Reboot state forever A this point, the engine can ping it, can ssh-connect to it, the host seems to have zero issue. In the web GUI, I can not put it into active state because it is not in maintenance state. It stays in reboot state. I can not either put it in maintenance state because it stays in reboot state. This state lasts long enough to allow me type this mail, look into logs, and as I was about to send logs, I see the host is returning to life (its states comes back as UP). I don't type fast, so after the host has finished rebooting, maybe 5 or 10 minutes have passed before the engine links again to the host. Before posting additional logs and comments, does anybody know if this is a know bug or behavior, or do I have to open a BZ? Regards, -- Nicolas ECARNOT

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Re: NFS Mount on EMC VNXe3200 / User - Group 36:36 / Permission issue
by Karli Sjöberg 12 Jul '18

12 Jul '18

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ovirt 3.5 fail to start on centOS 6.9
by dinushawww＠gmail.com 12 Jul '18

12 Jul '18

Hi, After installing ovirt 3.5 on centOS6.9 the ovirt-engine has stopped. while restarting the engine the error comes "/usr/share/jboss-as" not found. I installed jboss-as7.7.7final and again restart ovirt-engine. now it says ovirt-engine started, but when i checj the status, it shows ovirt-engine stopped, but PID file exist. Please help me to solve this. because i want to crate a lab using 3.5 for my exam. Thank You Dinusha

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Installing ovirt 3.6 on centOS 6.9 error
by dinushawww 12 Jul '18

12 Jul '18

Hi, After install ovirt 3.5 on centOS 6.9, the ovirt engine has stopped. while trying to start ovirt-engine it will say /usr/share/jboss-as not found. i manually download jboss 7.1.1 final and installed in /usr/share and again start the oviert-engine, this time it will start and then run the command service ovirt-engine status, ovirt-engine stopped, pid file exist. please help me to solve. i need to crate a lab using ovirt 3.5. Thank You Dinusha

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VDI - SPICE zero clients
by cmcl＠dneg.com 12 Jul '18

12 Jul '18

Hi, I gt hold of a 10zig V1200-P for testing VDI under ovirt/RHEV, as I'd read that they support SPICE. However, I haven't found how to connect it successfully to a VM as yet. Has anyone had any experience with these using ovirt/RHEV? I haven't been able to find any manuals or support info on the 10zig website regarding these V1200-P zero clients. I've read that they are discontinuing SPICE support in the future, but I just need to be able to demonstrate it working for now. Thanks for any help, Cam

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Console issues in a distributed environment over NAT
by shailigum＠gmail.com 11 Jul '18

11 Jul '18

Hi all, i'm trying to deploy oVirt to manage multiple 'data centers' (really just very basic deployments of single hosts using local storage that are deployed in varying geographic locations), where each host/resource pool is (unfortunately) only accessible via NAT. I've setup port-forwards for all functions, including SPICE/VNC, but am running into issues with the 'console' button in the GUI. When I initially added the host I added it using the NAT IP, however when trying to connect to console the console.vv file generated from the GUI references the local (private) IP of the host, instead of the NAT IP of the upstream firewall - so I have to manually open the file to change it to the NAT IP in order to connect to a VM's console. This is a minor annoyance for me, but it does ultimately the tool will be used by others who are less comfortable with steps like these. Is there a way around this, to have the console.vv generate with the IP oVirt is using to connect to the host, instead of its discovered local IP? Also if you can think of any other concerns I may encounter in a NAT deployment like this, please share! Thanks!

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NFS Mount on EMC VNXe3200 / User - Group 36:36 / Permission issue
by jeanbaptiste.coupiac＠nfrance.com 11 Jul '18

11 Jul '18

Hello, I try to mount an NFS Data share from a EMC VNXe3200 export. Unfortunately, NFS share cannot be mount, there is permission error. (Indeed, after the same issue on another NFS ISO repo, I've change exported directory user/group to 36:36, and O-Virt NFS mount was great). So, I think issue with my VNXe3200 is regarding UID / GID owner on VNXe3200 side. After webex with EMC support, change owner / permission on VNXe side seems not possible / supported. Can I mount the NFS share with some options to avoid vdsm:kvm mounting issue ? Can I force mount with root ? Regards, Jean-Baptiste COUPIAC

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Engine Error
by Sakhi Hadebe 11 Jul '18

11 Jul '18

Hi, I have just re-installed centOS 7 in 3 servers and have configured gluster volumes following this documentation: https://www.ovirt.org/blog/2016/03/up-and-running-with-ovirt-3-6/, But I have installed http://resources.ovirt.org/pub/yum-repo/ovirt-release42.rpm package. Hosted-engine --deploy is failing with this error: "rhel7", "--virt-type", "kvm", "--memory", "16384", "--vcpus", "4", "--network", "network=default,mac=00:16:3e:09:5e:5d,model=virtio", "--disk", "/var/tmp/localvm0nnJH9/images/eacac30d-0304-4c77-8753-6965e4b8c2e7/d494577e-027a-4209-895b-6132e6fc6b9a", "--import", "--disk", "path=/var/tmp/localvm0nnJH9/seed.iso,device=cdrom", "--noautoconsole", "--rng", "/dev/random", "--graphics", "vnc", "--video", "vga", "--sound", "none", "--controller", "usb,model=none", "--memballoon", "none", "--boot", "hd,menu=off", "--clock", "kvmclock_present=yes"], "delta": "0:00:00.979003", "end": "2018-07-10 17:55:11.308555", "msg": "non-zero return code", "rc": 1, "start": "2018-07-10 17:55:10.329552", "stderr": "ERROR unsupported configuration: CPU mode 'custom' for x86_64 kvm domain on x86_64 host is not supported by hypervisor\nDomain installation does not appear to have been successful.\nIf it was, you can restart your domain by running:\n virsh --connect qemu:///system start HostedEngineLocal\notherwise, please restart your installation.", "stderr_lines": ["ERROR unsupported configuration: CPU mode 'custom' for x86_64 kvm domain on x86_64 host is not supported by hypervisor", "Domain installation does not appear to have been successful.", "If it was, you can restart your domain by running:", " virsh --connect qemu:///system start HostedEngineLocal", "otherwise, please restart your installation."], "stdout": "\nStarting install...", "stdout_lines": ["", "Starting install..."]} I added the root user to the kvm group. but it ddn't work. Can you please help me out. I have been struggling to deploy the hosted engine. -- Regards, Sakhi

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PXE LOCALBOOT issue
by Michael Deffenbaugh 11 Jul '18

11 Jul '18

Hey all, Provisioning a host with Foreman 1.17.1/Katello 3.6. The host kickstarts fine but when it goes to reboot, iPXE fails to load the local disk when the Foreman local boot kickstart menu ( https://github.com/theforeman/community-templates/blob/develop/provisioning…, line 4-10) sends the command "LOCALBOOT 0". It simply fails and says "No more network devices. No bootable device." Is this a bug in iPXE? Any input would be greatly appreciated! Regards, Mike

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upload disk using python sdk
by 董青龙 11 Jul '18

11 Jul '18

Hi all, I want to upload an disk using python sdk instead of web. Which class should I use? I could not find a "upload" method in "class Disk" an "class Disks" in "brokers.py" Anyone can help? Thanks!

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Re: hosted-engine install fails (was: Engine Error)
by Yedidyah Bar David 11 Jul '18

11 Jul '18

On Tue, Jul 10, 2018 at 11:32 PM, Sakhi Hadebe <sakhi(a)sanren.ac.za> wrote: > Hi, > > I did not select any CPU architecture. It doenst gove me the option to > select one. It only states the number of virtual CPUs and the memory for > the engine VM. > > Looking at the documentation of installing ovirt-release36.rpm....it does > allow you to select te CPU, but not when installing ovirt-release42.rpm > > On Tuesday, July 10, 2018, Alastair Neil <ajneil.tech(a)gmail.com> wrote: > >> what did you select as your CPU architecture when you created the >> cluster? It looks like the VM is trying to use a CPU type of "Custom", how >> many nodes in your cluster? I suggest you specify the lowest common >> denominator of CPU architecture (e.g. Sandybridge) of the nodes as the CPU >> architecture of the cluster.. >> >> On Tue, 10 Jul 2018 at 12:01, Sakhi Hadebe <sakhi(a)sanren.ac.za> wrote: >> >>> Hi, >>> >>> I have just re-installed centOS 7 in 3 servers and have configured >>> gluster volumes following this documentation: >>> https://www.ovirt.org/blog/2016/03/up-and-running-with-ovirt-3-6/, But >>> I have installed >>> >>> http://resources.ovirt.org/pub/yum-repo/ovirt-release42.rpm >>> >>> package. >>> Hosted-engine --deploy is failing with this error: >>> >>> "rhel7", "--virt-type", "kvm", "--memory", "16384", "--vcpus", "4", >>> "--network", "network=default,mac=00:16:3e:09:5e:5d,model=virtio", >>> "--disk", "/var/tmp/localvm0nnJH9/images/eacac30d-0304-4c77-8753- >>> 6965e4b8c2e7/d494577e-027a-4209-895b-6132e6fc6b9a", "--import", >>> "--disk", "path=/var/tmp/localvm0nnJH9/seed.iso,device=cdrom", >>> "--noautoconsole", "--rng", "/dev/random", "--graphics", "vnc", "--video", >>> "vga", "--sound", "none", "--controller", "usb,model=none", "--memballoon", >>> "none", "--boot", "hd,menu=off", "--clock", "kvmclock_present=yes"], >>> "delta": "0:00:00.979003", "end": "2018-07-10 17:55:11.308555", "msg": >>> "non-zero return code", "rc": 1, "start": "2018-07-10 17:55:10.329552", >>> "stderr": "ERROR unsupported configuration: CPU mode 'custom' for x86_64 >>> kvm domain on x86_64 host is not supported by hypervisor\nDomain >>> installation does not appear to have been successful.\nIf it was, you can >>> restart your domain by running:\n virsh --connect qemu:///system start >>> HostedEngineLocal\notherwise, please restart your installation.", >>> "stderr_lines": ["ERROR unsupported configuration: CPU mode 'custom' for >>> x86_64 kvm domain on x86_64 host is not supported by hypervisor", "Domain >>> installation does not appear to have been successful.", "If it was, you can >>> restart your domain by running:", " virsh --connect qemu:///system start >>> HostedEngineLocal", "otherwise, please restart your installation."], >>> "stdout": "\nStarting install...", "stdout_lines": ["", "Starting >>> install..."]} >>> >> This seems to be in the phase where we create a local vm for the engine. We do this with plain virt-install, nothing fancy. Searching the net for "unsupported configuration: CPU mode 'custom'" finds other relevant reports, you might want to check them. You can see the command in bootstrap_local_vm.yml . Please check/share versions of relevant packages (libvirt*, qemu*, etc) and relevant logs (libvirt). Also updating the subject line and adding Simone. Best regards, -- Didi

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Unable to start VM
by Alex K 10 Jul '18

10 Jul '18

Hi all, I did a routine maintenance today (updating the hosts) to ovirt cluster (4.2) and I have one VM that was complaining about an invalid snapshot. After shutdown of VM the VM is not able to start again, giving the error: VM Gitlab is down with error. Exit message: Bad volume specification {'serial': 'b6af2856-a164-484a-afe5-9836bbdd14e8', 'index': 0, 'iface': 'virtio', 'apparentsize': '51838976', 'specParams': {}, 'cache': 'none', 'imageID': 'b6af2856-a164-484a-afe5-9836bbdd14e8', 'truesize': '52011008', 'type': 'disk', 'domainID': '142bbde6-ef9d-4a52-b9da-2de533c1f1bd', 'reqsize': '0', 'format': 'cow', 'poolID': '00000001-0001-0001-0001-000000000311', 'device': 'disk', 'path': '/rhev/data-center/00000001-0001-0001-0001-000000000311/142bbde6-ef9d-4a52-b9da-2de533c1f1bd/images/b6af2856-a164-484a-afe5-9836bbdd14e8/f3125f62-c909-472f-919c-844e0b8c156d', 'propagateErrors': 'off', 'name': 'vda', 'bootOrder': '1', 'volumeID': 'f3125f62-c909-472f-919c-844e0b8c156d', 'diskType': 'file', 'alias': 'ua-b6af2856-a164-484a-afe5-9836bbdd14e8', 'discard': False}. I see also the following error: VDSM command CopyImageVDS failed: Image is not a legal chain: (u'b6af2856-a164-484a-afe5-9836bbdd14e8',) Seems as a corrupt VM disk? The VM had 3 snapshots. I was able to delete one from GUI then am not able to delete the other two as the task fails. Generally I am not allowed to clone, export or do sth to the VM. Have you encountered sth similar. Any advice? Thanx, Alex

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Network Setup Error
by Sakhi Hadebe 10 Jul '18

10 Jul '18

Hi, I have successfully installe oVirtNode 4.2 and gluster storage on CentOS 7. I am now struggling to deploy the hosted engine. [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "msg": "Unable to create bridge virbr0: Package not installed"} [ ERROR ] Failed to execute stage 'Closing up': Failed executing ansible-playbook What is the right package for bridging in centOS 7? -- Regards, Sakhi Hadebe

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User permission. All user can access (start, shutdown) all vm in User/VM portal
by florentl 10 Jul '18

10 Jul '18

Hello, There is something I don't understand in permissions. I'm using Ovirt 4.2.3.5-1. I created a user : - ovirt-aaa-jdbc-tool user add etudiant2 --attribute=firstName=Etudiant2 --attribute=lastName=Etudiant2-Lastname - ovirt-aaa-jdbc-tool user password-reset etudiant2 --password-valid-to="2025-01-01 10:30:00Z" On the Administration Portal I gave him (etudiant2) the permission UserVmManager on only one VM and nothing else. But when he logs in the VM Portal he can view, start, stop all the VM. I think it's because all users are member of the group Everyone and this group has by default the UserRole. And in my config (the default/install config) the UserRole can do Basic Operation an VM. Moreover the UserRole is given to the group Everyone on all VM I created, and I can't remove this permission (Remove button is greyed). How can I make a VM "private", only visible by one user ? Thanks in advance, Florent

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OVN ACLs
by Niyazi Elvan 10 Jul '18

10 Jul '18

Hi All, I have started testing oVirt 4.2 and focused on OVN recently. I was wondering whether there is a plan to manage L2->L7 ACLs through oVirt web ui. If not, how could it be possible to manage ACLs except command line tools ? Using opendaylight ?? All the best ! Niyazi -- Niyazi Elvan

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Device Mapper Timeout when using Gluster Snapshots
by hsahmed＠gmail.com 09 Jul '18

09 Jul '18

I am facing this trouble since version 4.1 up to the latest 4.2.4, once we enable gluster snapshots and accumulate some snapshots (as few as 15 snapshots per server) we start having trouble booting the server. The server enters emergency shell upon boot after timing out waiting for snapshot devices. Waiting a few minutes and pressing Control-D then boots the server normally. In case of very large number of snapshots (600+) it can take days before the sever will boot. Attaching journal log, let me know if you need any other logs. Details of the setup: 3 node hyperconverged oVirt setup (64GB RAM, 8-Core E5 Xeon) oVirt 4.2.4 oVirt Node 4.2.4 10Gb Interface Thanks, Hesham S. Ahmed

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hyperconverged cluster - how to change the mount path?
by Liebe, André-Sebastian 09 Jul '18

09 Jul '18

Hi list, I'm looking for an advice how to change the mount point of the hosted_storage due to a hostname change. When I set up our hyperconverged lab cluster (host1, host2, host3) I populated the mount path with host3:/hosted_storage which wasn't very clever as it brings in a single point of failure (i.e. when host3 is down). So I thought adding a round robin dns/hosts entry (i.e. gluster1) for host 1 to 3 and changing the mount path would be a better idea. But the mount path entry is locked in web gui and I couldn't find any hint how to change it manually (in database, shared and local configuration) in a consistent way without risking the cluster. So, is there a step by step guide how to achieve this without reinstalling (from backup)? Sincerely André-Sebastian Liebe Technik / Innovation gematik Gesellschaft für Telematikanwendungen der Gesundheitskarte mbH Friedrichstraße 136 10117 Berlin Telefon: +49 30 40041-197 Telefax: +49 30 40041-111 E-Mail: andre.liebe(a)gematik.de www.gematik.de ___________________________________________ Amtsgericht Berlin-Charlottenburg HRB 96351 B Geschäftsführer: Alexander Beyer

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Advice on deploying oVirt hyperconverged environment Node based
by Tal Bar-Or 09 Jul '18

09 Jul '18

Hello All, I am about deploying a new Ovirt system for our developers that we plan to be hyperconverged environment Node based. The system workload would be mostly used for builders that compiling our code , which involves with lots of small files and intensive IO. I plan to build two glustered volume "layers" one based on sas drives for OS spin on, and second for Nvme based for intensive IO. I would expect that the system will be resilient/high availability and in the same time give enough good IO request for vm builders that will be at least 6 to 8 vm guests. The system hardware would be as follows: *chassis*: 4x HP DL380 gen8 *each server hardware:* *cpu*: 2x e5-2690v2 *memory*:256GB *Disks*:12x 1.2TB sas 10k disks , 2 mirror for os (or using usk kingstone 2x 128gb mirror) rest for vm os volume. *Nvme*: 2x960GB Kingstone KC1000 for builders compiling source code *Network: *4 ports Intel 10Gbit/s SFP + Given above configuration and theory, my question would be what would be best practice in terms of Gluster configuration *Distributed,Replicated,Distributed Replicated,Dispersed,Distributed Dispersed*? What is the suggestion for hardware raid type 5 or 6 , or use ZFS? Network nodes communication , i intend to use 3 ports for storage communication and one port for guests network , my question regarding Gluster inter communication , what is better would i gail from 3x 10G LACP or 1 network for each gluster volume? Please advice Thanks -- Tal Bar-or

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Changing resolution of console on Mint guest running on Ovirt 4.2
by pascal＠butterflyit.com 09 Jul '18

09 Jul '18

I keep getting an error: Could not set configuration for CRTC 63. I checked that I have spice-agent and spice-agentd running. Also qemu-guest-agent. lspci shows that I have a QXL adapter. xrandr -q shows that I have many different config available. but none work. What am I missing? Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192 Virtual-0 connected primary 1024x768+0+0 0mm x 0mm 1024x768 59.95*+ 1920x1200 59.95 1920x1080 60.00 1600x1200 59.95 1680x1050 60.00 1400x1050 60.00 1280x1024 59.95 1440x900 59.99 1280x960 59.99 1280x854 59.95 1280x800 59.96 1280x720 59.97 1152x768 59.95 800x600 59.96 848x480 59.94 720x480 59.94 640x480 59.94 Virtual-1 disconnected V

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change from LDAP to AD authentication
by p.staniforth＠leedsbeckett.ac.uk 09 Jul '18

09 Jul '18

Hello, as part of our policy I have to change from LDAP to Active Directory for authentication in our oVirt system. I have managed to configure a test system that allows users to login using the CN (sAMAccountName) as before. The users in the system using the AD namespace are using their UPN for their user name. Do we have to copy permissions from all the old accounts to their new accounts or is there a way to rename them to the UPN retaining there old permissions? Thanks, Paul S.

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