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oVirt selft-hosted with NFS on top gluster
by Abi Askushi 08 Sep '17

08 Sep '17

Hi All, I've playing with ovirt self hosted engine setup and I even use it to production for several VM. The setup I have is 3 server with gluster storage in replica 2+1 (1 arbiter). The data storage domain where VMs are stored is mounted with gluster through ovirt. The performance I get for the VMs is very low and I was thinking to switch and mount the same storage through NFS instead of glusterfs. The only think I am hesitant is how can I ensure high availability of the storage when I loose one server? I was thinking to have at /etc/hosts sth like below: 10.100.100.1 nfsmount 10.100.100.2 nfsmount 10.100.100.3 nfsmount then use nfsmount as the server name when adding this domain through ovirt GUI. Are there any other more elegant solutions? What do you do for such cases? Note: gluster has the back-vol-file option which provides a lean way to have redundancy on the mount point and I am using this when mounting with glusterfs. Thanx

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Update notes
by Karli Sjöberg 08 Sep '17

08 Sep '17

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Valid approach to backup/DR with Geo Replication?
by Michael Kleinpaste 07 Sep '17

07 Sep '17

Has anyone used the Geo Replication to facilitate Backups/DR? I'm looking to validate my thoughts since Geo Replication is a function in oVirt now. I'm considering this instead of the snap, clone, export, backup, delete clone, delete snap method. Thoughts? -- *Michael Kleinpaste* Senior Systems Administrator SharperLending, LLC. www.SharperLending.com Michael.Kleinpaste(a)SharperLending.com (509) 324-1230 Fax: (509) 324-1234

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[ANN] oVirt 4.1.6 Third Release Candidate is now available
by Lev Veyde 07 Sep '17

07 Sep '17

The oVirt Project is pleased to announce the availability of the Third Release Candidate of oVirt 4.1.6, as of September 7th, 2017 This update is the sixth in a series of stabilization updates to the 4.1 series. Starting from 4.1.5 oVirt supports libgfapi [5]. Using libgfapi provides a real performance boost for ovirt when using GlusterFS . Due to a known issue [6], using this will break live storage migration. This is expected to be fixed soon. If you do not use live storage migration you can give it a try. Use [7] for more details on how to enable it. This release is available now for: * Red Hat Enterprise Linux 7.3 or later * CentOS Linux (or similar) 7.3 or later This release supports Hypervisor Hosts running: * Red Hat Enterprise Linux 7.3 or later * CentOS Linux (or similar) 7.3 or later * oVirt Node 4.1 See the release notes draft [3] for installation / upgrade instructions and a list of new features and bugs fixed. Notes: - oVirt Appliance is already available Additional Resources: * Read more about the oVirt 4.1.6 release highlights: http://www.ovirt.org/release/4.1.6/ * 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] https://www.ovirt.org/community/ [2] https://bugzilla.redhat.com/enter_bug.cgi?classification=oVirt [3] http://www.ovirt.org/release/4.1.6/ [4] http://resources.ovirt.org/pub/ovirt-4.1-pre/iso/ [5] http://staged-gluster-docs.readthedocs.io/en/release3.7.0beta1/Features/lib… [6] https://bugzilla.redhat.com/show_bug.cgi?id=1306562 [7] http://www.ovirt.org/develop/release-management/features/storage/glusterfs-… -- 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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Cannot create snapshot_illegal disk
by Terry hey 07 Sep '17

07 Sep '17

Dear all, Thank you for your time to read this post first. In the same host, there are four virtual machines. Only one virtual machine that i cannot create a snapshot for backup usage. I have no idea what is happening and how to solve it. Would you guys help me and give some suggestion to me? Please kindly check the following links. I think those information including two picture of oVirt web manager, engine.log and vdsm.log, would be useful for finding the issue. *engine.log* https://drive.google.com/open?id=0B8dxamAkVEYdeFBOdlFUbnY1cFU *vdsm.log* https://drive.google.com/open?id=0B8dxamAkVEYddFh6dzc0VkVRMk0 *Two pictures of oVirt web manger:* *Before created the snapshot:* https://drive.google.com/open?id=0B8dxamAkVEYda2d0SzVvc3ZMTFU *After created the snapshot:* https://drive.google.com/open?id=0B8dxamAkVEYdV3lUVUJ0Zy1LeGc I am really looking forward for you guys' reply. Thank you again for your time to assist me. Regards, Terry

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Failed to check for available updates on host *** failed with message...
by Manuel Luis Aznar 06 Sep '17

06 Sep '17

Hello there, I am getting this error in the ovirt hosted engine: 2017-09-06 16:45:56,160+01 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (pool-7-thread-1) [4ff48065] EVENT_ID: HOST_AVAILABLE_UPDATES_FAILED(839), Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: *Failed to check for available updates on host host1.bajada.es <http://host1.bajada.es> with message 'SSH authentication to 'root(a)host1.bajada.es <root(a)host1.bajada.es>' failed. Please verify provided credentials. Make sure key is authorized at host'.* I am up and running: *oVirt Engine Version: 4.1.1.8-1.el7.centos*. I suppose that this error is related to SSH public and private keys. Am I right?¿ Thanks for all in advance Any help would be appreciated Manuel Luis Aznar

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Re: [ovirt-users] disk attachment to VM
by Benny Zlotnik 06 Sep '17

06 Sep '17

Hi, Look at [1], however there are caveats so be sure to pay close attention to the warning section. [1] - https://github.com/oVirt/vdsm/blob/master/vdsm_hooks/localdisk/README On Tue, Sep 5, 2017 at 4:52 PM, Benny Zlotnik <bzlotnik(a)redhat.com> wrote: > Hi, > > Look at [1], however there are caveats so be sure to pay close attention > to the warning section. > > [1] - https://github.com/oVirt/vdsm/blob/master/vdsm_hooks/ > localdisk/README > > > On Tue, Sep 5, 2017 at 4:40 PM, Erekle Magradze < > erekle.magradze(a)recogizer.de> wrote: > >> Hey Guys, >> Is there a way to attach an SSD directly to the oVirt VM? >> Thanks in advance >> Cheers >> Erekle >> _______________________________________________ >> Users mailing list >> Users(a)ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users >> > >

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cpu, core and thread mappings
by Gianluca Cecchi 06 Sep '17

06 Sep '17

Hello, I was talking with a guy expert in VMware and discussing performance of VMs in respect of virtual cpus assigned to them in relation with mapping with the real hw of the hypervisor underneath. One of the topics was numa usage and its overheads in case of a "too" big VM, in terms of both number of vcpus and memory amount. Eg: suppose host has 2 intel based sockets, with 6 cores and HT enabled and has 96Gb of ram (distributed 48+48 between the 2 processors) suppose I configure a VM with 16 vcpus (2:4:2): would be the mapping respected at physical level or only a sort of "hint" for the hypervisor? Can I say that it would perform better if I configure it 12 vcpus and mapping 1:6:2, because it can stay all inside one cpu? And what if I define a VM with 52Gb of ram? Can I say that it would perform in general better if I try to get it all in one cpu related memory slots (eg not more than 48Gb in my example)? Are there any documents going more deeply in these sort of considerations? Also, if one goes and sizes so that the biggest VM is able to all-stay inside one cpu-memory, does it make sense to say that it will perform better in this scenario a cluster composed by 4 nodes, each one with 1 socket and 48Gb of memory instead of a cluster of 2 nodes, each one with 2 sockets and 96Gb of ram? Hope I have clarified my questions/doubts. Thanks in advance for any insight, Gianluca

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Re: [ovirt-users] Failed to import the Hosted Engine Storage Domain
by Simone Tiraboschi 06 Sep '17

06 Sep '17

On Mon, Sep 4, 2017 at 2:21 PM, Arsène Gschwind <arsene.gschwind(a)unibas.ch> wrote: > > > On 09/04/2017 02:01 PM, Simone Tiraboschi wrote: > > > > On Mon, Sep 4, 2017 at 1:55 PM, Arsène Gschwind <arsene.gschwind(a)unibas.ch > > wrote: > >> >> >> On 09/04/2017 01:52 PM, Simone Tiraboschi wrote: >> >> >> >> On Mon, Sep 4, 2017 at 12:23 PM, Arsène Gschwind < >> arsene.gschwind(a)unibas.ch> wrote: >> >>> Hi Simone, >>> >>> On 09/04/2017 11:14 AM, Simone Tiraboschi wrote: >>> >>> >>> >>> On Mon, Sep 4, 2017 at 10:56 AM, Arsène Gschwind < >>> arsene.gschwind(a)unibas.ch> wrote: >>> >>>> Hi Didi, >>>> >>>> On 09/04/2017 10:15 AM, Yedidyah Bar David wrote: >>>> >>>> On Mon, Sep 4, 2017 at 10:16 AM, Arsène Gschwind<arsene.gschwind(a)unibas.ch> <arsene.gschwind(a)unibas.ch> wrote: >>>> >>>> Hi all, >>>> >>>> A while ago I had some problem with hosted-engine network which wasn't set >>>> correctly at deploy time, so I finally decided to redeploy the hosted engine >>>> in the hope the network will be set correctly this time. I've followed this >>>> procedure: >>>> >>>> Stop all VMs >>>> Full backup of HE DB and export to safe place >>>> Cleanup HE storage following https://access.redhat.com/solutions/2121581 >>>> Reboot Hosts >>>> Re-deploy HE until DB recovery >>>> Recover DB adding the following param: >>>> --he-remove-storage-vm Removes the hosted-engine storage >>>> domain, all its entities and the hosted-engine VM during restore. >>>> --he-remove-hosts Removes all the hosted-engine hosts >>>> during restore. >>>> >>>> Finalize HE deployment. >>>> >>>> Everything did run without errors and I'm able to access Web UI. >>>> >>>> But now I don't see my HE VM and its respective Storage Domain, the logs >>>> says it isn't able to import it. I see all other SD and I'm able to manage >>>> my VMs as before. >>>> >>>> Please find attached engine.log >>>> >>>> I think this is your problem: >>>> >>>> 2017-09-04 03:26:14,272+02 INFO >>>> [org.ovirt.engine.core.bll.storage.domain.AddExistingBlockStorageDomainCommand] >>>> (org.ovirt.thread.pool-6-thread-24) [2383eaa0] There are existing luns >>>> in the system which are part of VG id >>>> 'vvIoS2-fZTZ-99Ox-Ltzq-pr8U-SL2z-wbTU8g' >>>> >>>> I don't see a VG with this ID, here the IDs I see on the hosts: >>>> >>>> VG #PV #LV #SN Attr VSize VFree >>>> 6b62cc06-fc44-4c38-af6d-bfd9cbe73246 1 10 0 wz--n- 99.62g 14.50g >>>> b0414c06-d984-4001-a998-fd9a2e79fb83 2 70 0 wz--n- 10.00t 2.31t >>>> b2e30961-7cff-4cca-83d6-bee3a4f890ee 2 47 0 wz--n- 5.27t 2.50t >>>> >>> >>> >>> Could you please repeat the command on host adm-kvmh70 ? >>> >>> 2017-09-04 09:04:18,163+02 INFO [org.ovirt.engine.core.bll.st >>> orage.domain.ImportHostedEngineStorageDomainCommand] >>> (org.ovirt.thread.pool-6-thread-34) [247a3718] Running command: >>> ImportHostedEngineStorageDomainCommand internal: true. >>> 2017-09-04 09:04:18,189+02 INFO [org.ovirt.engine.core.vdsbro >>> ker.vdsbroker.GetVGInfoVDSCommand] (org.ovirt.thread.pool-6-thread-34) >>> [7d2e6cb2] START, GetVGInfoVDSCommand(HostName = adm-kvmh70, >>> GetVGInfoVDSCommandParameters:{runAsync='true', >>> hostId='acbacabb-6c4a-43fd-a1e2-2d7ff2f6f98b', >>> VGID='vvIoS2-fZTZ-99Ox-Ltzq-pr8U-SL2z-wbTU8g'}), log id: 6693b98a >>> 2017-09-04 09:04:18,232+02 INFO [org.ovirt.engine.core.vdsbro >>> ker.vdsbroker.GetVGInfoVDSCommand] (org.ovirt.thread.pool-6-thread-34) >>> [7d2e6cb2] FINISH, GetVGInfoVDSCommand, return: >>> [LUNs:{id='repl_HostedEngine', physicalVolumeId='kYN8Jj-FBDw-MhxI-XcoZ-w1zH-eQL8-IRIgzO', >>> volumeGroupId='vvIoS2-fZTZ-99Ox-Ltzq-pr8U-SL2z-wbTU8g', >>> serial='SHITACHI_OPEN-V_50488888', lunMapping='4', vendorId='HITACHI', >>> productId='OPEN-V', lunConnections='[]', deviceSize='100', pvSize='0', >>> peCount='797', peAllocatedCount='681', vendorName='HITACHI', >>> pathsDictionary='[sdf=true, sdu=true, sdk=true, sdp=true]', >>> pathsCapacity='[sdf=100, sdu=100, sdk=100, sdp=100]', lunType='FCP', >>> status='null', diskId='null', diskAlias='null', >>> storageDomainId='6b62cc06-fc44-4c38-af6d-bfd9cbe73246', >>> storageDomainName='null', discardMaxSize='268435456', >>> discardZeroesData='true'}], log id: 6693b98a >>> 2017-09-04 09:04:18,245+02 INFO [org.ovirt.engine.core.bll.st >>> orage.domain.AddExistingBlockStorageDomainCommand] >>> (org.ovirt.thread.pool-6-thread-34) [7d2e6cb2] There are existing luns >>> in the system which are part of VG id 'vvIoS2-fZTZ-99Ox-Ltzq-pr8U-SL >>> 2z-wbTU8g' >>> 2017-09-04 09:04:18,245+02 WARN [org.ovirt.engine.core.bll.st >>> orage.domain.AddExistingBlockStorageDomainCommand] >>> (org.ovirt.thread.pool-6-thread-34) [7d2e6cb2] Validation of action >>> 'AddExistingBlockStorageDomain' failed for user SYSTEM. Reasons: >>> VAR__TYPE__STORAGE__DOMAIN,VAR__ACTION__ADD,ACTION_TYPE_FAIL >>> ED_IMPORT_STORAGE_DOMAIN_EXTERNAL_LUN_DISK_EXIST >>> >>> I don't know which command you are talking about, I didn't run any >>> command since it tries to import the SD automatically. >>> >> >> Sorry, can you please run vgdisplay on adm-kvmh70 ? >> >> No problem! here the result: >> >> [root@adm-kvmh70 ~]# vgs >> VG #PV #LV #SN Attr VSize VFree >> 6b62cc06-fc44-4c38-af6d-bfd9cbe73246 1 10 0 wz--n- 99.62g 14.50g >> b0414c06-d984-4001-a998-fd9a2e79fb83 2 70 0 wz--n- 10.00t 2.31t >> b2e30961-7cff-4cca-83d6-bee3a4f890ee 2 47 0 wz--n- 5.27t 2.50t >> vg_adm-kvmh70 1 3 0 wz--n- 277.90g 218.68g >> >> > OK, and > vgdisplay 6b62cc06-fc44-4c38-af6d-bfd9cbe73246 > > [root@adm-kvmh70 ~]# vgdisplay 6b62cc06-fc44-4c38-af6d-bfd9cbe73246 > --- Volume group --- > VG Name 6b62cc06-fc44-4c38-af6d-bfd9cbe73246 > System ID > Format lvm2 > Metadata Areas 2 > Metadata Sequence No 23 > VG Access read/write > VG Status resizable > MAX LV 0 > Cur LV 10 > Open LV 3 > Max PV 0 > Cur PV 1 > Act PV 1 > VG Size 99.62 GiB > PE Size 128.00 MiB > Total PE 797 > Alloc PE / Size 681 / 85.12 GiB > Free PE / Size 116 / 14.50 GiB > VG UUID vvIoS2-fZTZ-99Ox-Ltzq-pr8U-SL2z-wbTU8g > OK, vvIoS2-fZTZ-99Ox-Ltzq-pr8U-SL2z-wbTU8g is the uuid of the VG that engine says that it includes the LUN used by the hosted-engine SD as detected by the engine. Its name is 6b62cc06-fc44-4c38-af6d-bfd9cbe73246 which is also the uuid of that storage domain. Now we need to understand what's there. Could you please check if an SD with uuid 6b62cc06-fc44-4c38-af6d-bfd9cbe73246 is visible in the engine? Is adm-kvmh70 involved in hosted-engine? did you redeployed it? In the past did you tried to manually import the hosted-engine SD or something similar? thanks > > Thanks > > ? > > >> >> >> >>> >>> Thanks, >>> Arsene >>> >>> >>> >>>> >>>> >>>> Thanks for any help to resolve that issue. >>>> >>>> I guess you can try to remove this disk/lun from the engine and let it retry. >>>> >>>> Could let me know how to remove that lun from the engine? >>>> >>>> If the only disk is of the hosted-engine, I guess it should have been >>>> removed by '--he-remove-storage-vm' - if so, please open a bug >>>> describing your flow in detail. Thanks. >>>> >>>> It seems that this option didn't remove the he storage information and >>>> that this VG is still the old one. >>>> >>>> Many thanks for your help >>>> Rgds, >>>> Arsene >>>> >>>> Best, >>>> >>>> >>>> Arsène >>>> >>>> -- >>>> >>>> Arsène Gschwind >>>> Fa. Sapify AG im Auftrag der Universität Basel >>>> IT Services >>>> Klingelbergstr. 70 | CH-4056 Basel | Switzerland >>>> Tel. +41 79 449 25 63 <+41%2079%20449%2025%2063> | http://its.unibas.ch >>>> ITS-ServiceDesk: support-its(a)unibas.ch | +41 61 267 14 11 <+41%2061%20267%2014%2011> >>>> >>>> >>>> _______________________________________________ >>>> Users mailing listUsers@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/users >>>> >>>> >>>> -- >>>> >>>> *Arsène Gschwind* >>>> Fa. Sapify AG im Auftrag der Universität Basel >>>> IT Services >>>> Klingelbergstr. 70 | CH-4056 Basel | Switzerland >>>> Tel. +41 79 449 25 63 <+41%2079%20449%2025%2063> | http://its.unibas.ch >>>> >>>> ITS-ServiceDesk: support-its(a)unibas.ch | +41 61 267 14 11 >>>> <+41%2061%20267%2014%2011> >>>> >>>> _______________________________________________ >>>> Users mailing list >>>> Users(a)ovirt.org >>>> http://lists.ovirt.org/mailman/listinfo/users >>>> >>>> >>> >>> -- >>> >>> *Arsène Gschwind* >>> Fa. Sapify AG im Auftrag der Universität Basel >>> IT Services >>> Klingelbergstr. 70 | CH-4056 Basel | Switzerland >>> Tel. +41 79 449 25 63 <+41%2079%20449%2025%2063> | http://its.unibas.ch >>> >>> ITS-ServiceDesk: support-its(a)unibas.ch | +41 61 267 14 11 >>> <+41%2061%20267%2014%2011> >>> >> >> >> -- >> >> *Arsène Gschwind* >> Fa. Sapify AG im Auftrag der Universität Basel >> IT Services >> Klingelbergstr. 70 | CH-4056 Basel | Switzerland >> Tel. +41 79 449 25 63 <+41%2079%20449%2025%2063> | http://its.unibas.ch >> >> ITS-ServiceDesk: support-its(a)unibas.ch | +41 61 267 14 11 >> <+41%2061%20267%2014%2011> >> > > > -- > > *Arsène Gschwind* > Fa. Sapify AG im Auftrag der Universität Basel > IT Services > Klingelbergstr. 70 | CH-4056 Basel | Switzerland > Tel. +41 79 449 25 63 <+41%2079%20449%2025%2063> | http://its.unibas.ch > ITS-ServiceDesk: support-its(a)unibas.ch | +41 61 267 14 11 > <+41%2061%20267%2014%2011> >

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Slow booting host - restart loop
by Bernardo Juanicó 06 Sep '17

06 Sep '17

Hi everyone, I installed 2 hosts on a new cluster and the servers take a really long to boot up (about 8 minutes). When a host crashes or is powered off the ovirt-manager starts it via power management, since the servers takes all that time to boot up the ovirt-manager thinks it failed to start and proceeds to reboot it, several times before giving up, when the server is finally started (about 20 minutes after the failure) I changed some engine variables with engine-config trying to set a higher timeout, but the problem persists. Any ideas?? Regards, Bernardo PGP Key <http://pgp.mit.edu/pks/lookup?op=get&search=0x695E5BCE34263F5B> Skype: mattraken

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