March 2018 - Users - oVirt List Archives

oVIRT 4.1 / iSCSI Multipathing
by Devin Acosta 05 Mar '18

05 Mar '18

I am using the latest release of oVIRT 4.1.3, and I am connecting a Dell Compelent SAN that has 2 fault domains each on a separate VLAN that I have attached to oVIRT. From what I understand I am suppose to go into “iSCSI Multipathing” option and add a BOND of the iSCSI interfaces. I have done this selecting the 2 logical networks together for iSCSI. I notice that there is an option below to select Storage Targets but if I select the storage targets below with the logical networks the the cluster goes crazy and appears to be mad. Storage, Nodes, and everything goes offline even thought I have NFS also attached to the cluster. How should this best be configured. What we notice that happens is when the server reboots it seems to log into the SAN correctly but according the the Dell SAN it is only logged into once controller. So only pulls both fault domains from a single controller. Please Advise. Devin

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Any Kind of Storage IO Limitation?
by Thomas Fecke 05 Mar '18

05 Mar '18

--_000_047d22559fb543f0ab04092ca22f4f05DR1XEXCH01Besetcorp_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hey Guys, I got a kind of strange Question: We got some Hypervisors connected to an x86 Storage ( NFS ) The Machines are connected via 10 Gbit with that Storage. When I try to rsy= nc some Files we reach almost the Maximum Bandwidth. But, when I copy some VM=B4s, Templates or do something Stroage related in = Ovirt I just can reach 1000 M/bit. Is there any kind of "Config Limitation"? My biggest Problem: We work a lot with Templates. When I deploy 10 VM=B4s based on one Template= the VM=B4s are getting very slow and the Storage seems to be the Problem Thanks a lot --_000_047d22559fb543f0ab04092ca22f4f05DR1XEXCH01Besetcorp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> <p class=3D"MsoNormal">Hey Guys,<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">I got a kind of strange Question: <o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">We got some Hypervisors connected to an x86 Storage = ( NFS )<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">The Machines are connected via 10 Gbit with that Sto= rage. When I try to rsync some Files we reach almost the Maximum Bandwidth.= <o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">But, when I copy some VM=B4s, Templates or do someth= ing Stroage related in Ovirt I just can reach 1000 M/bit. <o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Is there any kind of “Config Limitation”= ?<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">My biggest Problem:<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">We work a lot with Templates. When I deploy 10 VM=B4= s based on one Template the VM=B4s are getting very slow and the Storage se= ems to be the Problem<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Thanks a lot <o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:"Ca= libri Light",sans-serif;mso-fareast-language:EN-GB"><o:p> </o:p><= /span></p> <p class=3D"MsoNormal"><o:p> </o:p></p> </div> </body> </html> --_000_047d22559fb543f0ab04092ca22f4f05DR1XEXCH01Besetcorp_--

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Can't move/copy VM disks between Data Centers
by Andrei V 05 Mar '18

05 Mar '18

--Apple-Mail=_36201DCF-3630-4952-83E8-1C1F6354AA6E Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi, I have oVirt setup, separate PC host engine + 2 nodes (#10 + #11) with = local storage domains (internal RAIDs). 1st node #10 is currently active and can=E2=80=99t be turned off. Since oVirt doesn=E2=80=99t support more then 1 host in data center with = local storage domain as described here: http://lists.ovirt.org/pipermail/users/2018-January/086118.html = <http://lists.ovirt.org/pipermail/users/2018-January/086118.html> defined another data center with 1 node #11. Problem:=20 1) can=E2=80=99t copy or move VM disks from node #10 (even of inactive = VMs) to node #11, this node is NOT being shown as possible destination. 2) can=E2=80=99t migrate active VMs to node #11. 3) Added NFS shares to data center #1 -> node #10, but can=E2=80=99t = change data center #1 -> storage type to Shared, because this operation = requires detachment of local storage domains, which is not possible, = several VMs are active and can=E2=80=99t be stopped. VM disks placed on local storage domains because of performance = limitations of our 1Gbit network.=20 2 VMs running our accounting/inventory control system, and are critical = to NFS storage performance limits. How to solve this problem ? Thanks in advance. Andrei --Apple-Mail=_36201DCF-3630-4952-83E8-1C1F6354AA6E Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; = charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; line-break: after-white-space;" = class=3D"">Hi,<div class=3D""><br class=3D""></div><div class=3D"">I = have oVirt setup, separate PC host engine + 2 nodes (#10 + #11) = with local storage domains (internal RAIDs).</div><div class=3D"">1st = node #10 is currently active and can=E2=80=99t be turned off.</div><div = class=3D""><br class=3D""></div><div class=3D"">Since oVirt doesn=E2=80=99= t support more then 1 host in data center with local storage domain as = described here:</div><div class=3D""><a = href=3D"http://lists.ovirt.org/pipermail/users/2018-January/086118.html" = class=3D"">http://lists.ovirt.org/pipermail/users/2018-January/086118.html= </a><br class=3D"">defined another data center with 1 node = #11.</div><div class=3D""><br class=3D""></div><div = class=3D"">Problem: </div><div class=3D"">1) can=E2=80=99t copy or = move VM disks from node #10 (even of inactive VMs) to node #11, this = node is NOT being shown as possible destination.</div><div class=3D"">2) = can=E2=80=99t migrate active VMs to node #11.</div><div class=3D"">3) = Added NFS shares to data center #1 -> node #10, but can=E2=80=99t = change data center #1 -> storage type to Shared, because this = operation requires detachment of local storage domains, which is not = possible, several VMs are active and can=E2=80=99t be stopped.</div><div = class=3D""><br class=3D""></div><div class=3D"">VM disks placed on local = storage domains because of performance limitations of our 1Gbit = network. </div><div class=3D"">2 VMs running our = accounting/inventory control system, and are critical to NFS storage = performance limits.</div><div class=3D""><br class=3D""></div><div = class=3D"">How to solve this problem ?</div><div class=3D"">Thanks in = advance.</div><div class=3D""><br class=3D""></div><div = class=3D"">Andrei</div><div class=3D""><br class=3D""></div></body></html>= --Apple-Mail=_36201DCF-3630-4952-83E8-1C1F6354AA6E--

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Installation using virtual machines
by Anastasiya Ruzhanskaya 05 Mar '18

05 Mar '18

Hello! I have read the documentation on the web site, but still it is not clear for me : is it possible to install ovirt engine as well as guests on virtual machines, not on the real hardware?

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Ovirt 4.2.1 Storage with Fibre Channel Protocol
by Sérgio Marques 05 Mar '18

05 Mar '18

Hello, I'm new in Ovirt, loving it, but i'm having some doubts when it comes to add FCP Storage. I have two clusters, one called Production and the other Development, each cluster with two nodes and i want to configure Data Domain. My doubts are: 1 - Every nodes must have connection to de FCP? If only de SPM have it, if it falls, who can connect to the storage? 2 - I have only one LUN in EVA HSV300 for me and i want to add three Storage Domains (Data, ISO e Export). Is it possible? How? This is because when i add data storage domain and choose the only LUN available it warn me that all data is going to be lost "This operation might be unrecoverable and destructive" 3 - Any advice about best practices about implementation? Thanks -- Cumprimentos, Sérgio Marques

2 1

Problem Storage Iscsi
by João Floriano - Magnet 05 Mar '18

05 Mar '18

Hello everyone! I am facing the following problem with ovirt 4.2.1, out of nowhere all virtual machines are paused and only return operals if log in via ssh on the host and execute a "virsh destroy domain", it is necessary to reactivate disk and network after this process. In the events I get the following message: VM X has been paused due to storage I / O problem. Currently I have iscsi storage configured on a server with target and based on some test I did not identify problems of communication of the hosts to the storage can you help me? --

2 1

VM paused rather than migrate to another hosts
by Terry hey 05 Mar '18

05 Mar '18

Dear all, I am testing iSCSI bonding failover test on oVirt, but i observed that VM were paused and did not migrate to another host. Please see the details as follows. I have two hypervisors. Since they are running iLO 5 and oVirt 4.2 cannot support iLO 5, thus i cannot setup power management. For the cluster setting, I set "Migrate Virtual Machines" under the Migration Policy. For each hypervisor, I bonded two iSCSI interface as bond 1. I created one Virtual machine and enable high availability on it. Also, I created one Virtual machine and did not enable high availability on it. When i shutdown one of the iSCSI interface, nothing happened. But when i shutdown both iSCSI interface, VM in that hosts were paused and did not migrate to another hosts. Is this behavior normal or i miss something? Thank you all of you. Regards, Terry Hung

2 5

VMs stuck in migrating state
by nicolas＠devels.es 05 Mar '18

05 Mar '18

Hi, We're running 4.1.9 and during the weekend we had a storage issue that seemed to leave some hosts in an strange state. One of the hosts has almost all VMs migrating (although it seems to not actually being migrating them) and the migration state cannot be cancelled. When clicking on one of those machines and selecting 'Cancel migration', in the ovirt-engine log I see: 2018-02-26 08:52:07,588Z INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.CancelMigrateVDSCommand] (org.ovirt.thread.pool-6-thread-36) [887dfbf9-dece-4f7b-90a8-dac02b849b7f] HostName = host2.domain.com 2018-02-26 08:52:07,588Z ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.CancelMigrateVDSCommand] (org.ovirt.thread.pool-6-thread-36) [887dfbf9-dece-4f7b-90a8-dac02b849b7f] Command 'CancelMigrateVDSCommand(HostName = host2.domain.com, CancelMigrationVDSParameters:{runAsync='true', hostId='e63b9146-10c4-47ad-bd6c-f053a8c5b4eb', vmId='26d37e43-32e2-4e55-9c1e-1438518d5021'})' execution failed: VDSGenericException: VDSErrorException: Failed to CancelMigrateVDS, error = Migration process cancelled, code = 82 On the vdsm side I see: 2018-02-26 08:56:19,396+0000 INFO (jsonrpc/0) [vdsm.api] START migrateCancel() from=::ffff:10.X.X.X,54654, flow_id=874d36d7-63f5-4b71-8a4d-6d9f3ec65858 (api:46) 2018-02-26 08:56:19,398+0000 INFO (jsonrpc/0) [vdsm.api] FINISH migrateCancel return={'status': {'message': 'Migration process cancelled', 'code': 82}, 'progress': 0} from=::ffff:10.X.X.X,54654, flow_id=874d36d7-63f5-4b71-8a4d-6d9f3ec65858 (api:52) So no error on the vdsm side log. I already tried restarting ovirt-engine but it didn't work. Could someone shed some light on how to cancel the migration status for these machines? All of them seem to be running on the same host. Thanks.

2 4

Q: VM disk speed penalty NFS vs Local data center storage
by Andrei Verovski 04 Mar '18

04 Mar '18

--Apple-Mail=_C43BDBF4-3002-413D-82F4-FAC738EF31F9 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi, Since oVirt doesn=E2=80=99t support more then 1 host in data center with = local storage domain as described here: http://lists.ovirt.org/pipermail/users/2018-January/086118.html = <http://lists.ovirt.org/pipermail/users/2018-January/086118.html> I have to setup NFS server on node with VMs (on same node) access via = NFS. 10 GB shared storage is in the future plans yet right now have only 2 = nodes with local RAID on each. Q: What is VM disk speed penalty (approx %) NFS vs Local RAID in oVirt = data center storage?=20 Currently I have 2 VMs running our accounting/inventory control system = which are critical to storage performance limits. 2 other VMs have very low disk activity. Thanks in advance Andrei Verovski --Apple-Mail=_C43BDBF4-3002-413D-82F4-FAC738EF31F9 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; = charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; line-break: after-white-space;" = class=3D"">Hi,<div class=3D""><br class=3D""></div><div class=3D""><div = class=3D"">Since oVirt doesn=E2=80=99t support more then 1 host in data = center with local storage domain as described here:</div><div = class=3D""><a = href=3D"http://lists.ovirt.org/pipermail/users/2018-January/086118.html" = class=3D"">http://lists.ovirt.org/pipermail/users/2018-January/086118.html= </a></div><div class=3D""><br class=3D""></div><div class=3D"">I have to = setup NFS server on node with VMs (on same node) access via = NFS.</div><div class=3D"">10 GB shared storage is in the future plans = yet right now have only 2 nodes with local RAID on each.</div><div = class=3D""><br class=3D""></div><div class=3D"">Q: What is VM disk speed = penalty (approx %)  NFS vs Local RAID in oVirt data center = storage? </div><div class=3D"">Currently I have 2 VMs running our = accounting/inventory control system which are critical to storage = performance limits.</div></div><div class=3D"">2 other VMs have very low = disk activity.</div><div class=3D""><br class=3D""></div><div = class=3D"">Thanks in advance</div><div class=3D"">Andrei = Verovski</div><div class=3D""><br class=3D""></div></body></html>= --Apple-Mail=_C43BDBF4-3002-413D-82F4-FAC738EF31F9--

3 2

cannot remove vm.
by nicola gentile 04 Mar '18

04 Mar '18

Hi, I have a problem. I try to remove a pool and than I remove every vm but one of this display the message "Cannot remove VM. Related operation is currently in progress. Please try again later." I try to unlock with this command PGPASSWORD=... /usr/share/ovirt-engine/setup/dbutils/unlock_entity.sh -t all -u engine but not working in /var/log/ovirt-engine/engine.log 2018-03-01 17:02:47,799+01 INFO [org.ovirt.engine.core.bll.RemoveVmCommand] (default task-33) [0217d710-afb6-4450-9897-02748d871aa1] Failed to Acquire Lock to object 'EngineLock:{exclusiveLocks='[d623ad44-a645-4fd0-9993-d21374e99eb5=VM]', sharedLocks=''}' 2018-03-01 17:02:47,799+01 WARN [org.ovirt.engine.core.bll.RemoveVmCommand] (default task-33) [0217d710-afb6-4450-9897-02748d871aa1] Validation of action 'RemoveVm' failed for user admin@internal-authz. Reasons: VAR__ACTION__REMOVE,VAR__TYPE__VM,ACTION_TYPE_FAILED_OBJECT_LOCKED please help thanks Nick

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