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After trying to use OVS can't recover a node to use ovirtmgmt
by Juan Manuel Nieto 21 Nov '17

21 Nov '17

Hello, I've unsucessfully tried in a node to use ovs, now I want to switch back to use ovirtmgmt but I cant. for some reason my node is not operational and I have the following on ovirt-engine.log: ------------------------------0---------------> ERROR [org.ovirt.engine.core.bll.SetNonOperationalVdsCommand] (DefaultQuartzScheduler7) [1472e53b] Host 'labarq01.lda' is set to Non-Operational, it is missing the following networks: 'ovirtmgmt' <------------------------------0------------------- When I was installing OVS for some reason the ovirtmgmt was removed I recreated it and its functional. 5: ovirtmgmt: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000 link/ether a0:8c:fd:c7:1a:00 brd ff:ff:ff:ff:ff:ff inet 10.3.38.11/24 brd 10.3.38.255 scope global ovirtmgmt valid_lft forever preferred_lft forever inet6 fe80::a28c:fdff:fec7:1a00/64 scope link valid_lft forever preferred_lft forever root@labarq01 ovirt-engine]# cat /etc/sysconfig/network-scripts/ifcfg-ovirtmgmt # Generated by VDSM version 4.19.31-1.el7.centos DEVICE=ovirtmgmt TYPE=Bridge DELAY=0 STP=off ONBOOT=yes IPADDR=10.3.38.11 NETMASK=255.255.255.0 GATEWAY=10.3.38.1 BOOTPROTO=none MTU=1500 DEFROUTE=yes NM_CONTROLLED=no IPV6INIT=yes IPV6_AUTOCONF=yes DNS1=10.12.1.110 DNS2=10.113.24.145 root@labarq01 ovirt-engine]# brctl show bridge name bridge id STP enabled interfaces ;vdsmdummy; 8000.000000000000 no ovirtmgmt 8000.a08cfdc71a00 no eno1 I'm using Centos 7 and ovirt 4.1.7 the rest of the nodes work properly. Is there any way to configure this network for this host manually? Thank you in advance. Best regards

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ovirt node and logical networks on same physical one
by Gianluca Cecchi 21 Nov '17

21 Nov '17

Hello, I'm going to setup an environment where unfortunately I will have only a flat physical class B private network available, for all my scopes. There are 2 stacked switches where the hypervisors' nics will connect to. My hypervisors will have 6 network interfaces so that potentially I could configure 3 bonds: one for mgmt, one for migration, one for VMs. But this way each hypervisor will have its mgmt ip and its migration ip on the same lan and also the IP of a VM running inside it will stay in the same lan. Is this kind of configuration feasible for a test? Any suggestion based on these constraints? If this matter, I'm going to install hypervisors as oVirt nodes Thanks, Gianluca

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Info about xeon mp dunnington support
by Gianluca Cecchi 21 Nov '17

21 Nov '17

Hello, I should start configuring a lab environment where I should have available some IBM 3850 M2 servers with E7450 Xeon cpu (also known as Dunnington). Spec page of processor here: https://ark.intel.com/it/products/36941/Intel-Xeon-Processor-E7450-12M-Cach… Can you tell me if they are compatible with oVirt 4.1 for testing; used by anyone on list? Base on this following link I presume it should be detected as Penryn from oVirt, correct? https://en.wikipedia.org/wiki/List_of_Intel_codenames I have not them physically accessible right now but I'm just moving to avoid, if possible, compatibility problems. Thanks, Gianluca

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Why was HE Install made OVA only?
by Alan Griffiths 21 Nov '17

21 Nov '17

Hi, What was the reasoning behind making Hosted Engine install OVA only? The PXEBoot feature always worked really well for me, and now I have a number of extra steps to achieve the same end result. Thanks, Alan

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Cannot remove snapshot
by Nicolas Ecarnot 21 Nov '17

21 Nov '17

Hello, oVirt 3.6.7.5-1 I'm trying to remove a snapshot in a cold way (VM shut down). It is failing, and VDSM is telling : 4f1588f3-ae2d-4702-b7e1-4ef53b5b5a1d::DEBUG::2017-11-17 13:04:11,448::lvm::290::Storage.Misc.excCmd::(cmd) SUCCESS: <err> = ' WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!\n'; <rc> = 0 4f1588f3-ae2d-4702-b7e1-4ef53b5b5a1d::DEBUG::2017-11-17 13:04:11,456::lvm::462::Storage.LVM::(_reloadlvs) lvs reloaded 4f1588f3-ae2d-4702-b7e1-4ef53b5b5a1d::DEBUG::2017-11-17 13:04:11,456::lvm::462::Storage.OperationMutex::(_reloadlvs) Operation 'lvm reload operation' released the operation mutex 4f1588f3-ae2d-4702-b7e1-4ef53b5b5a1d::ERROR::2017-11-17 13:04:11,457::image::1302::Storage.Image::(merge) Unexpected error Traceback (most recent call last): File "/usr/share/vdsm/storage/image.py", line 1293, in merge sdDom, srcVolParams, volParams, reqSize, chain) File "/usr/share/vdsm/storage/image.py", line 1039, in _baseCowVolumeMerge unsafe=False, rollback=True) File "/usr/share/vdsm/storage/volume.py", line 278, in rebase raise se.MergeSnapshotsError(self.volUUID) MergeSnapshotsError: Error merging snapshots: ('4a8c17aa-5882-45a1-8a6e-40db39ed06ca',) I read this : https://bugzilla.redhat.com/show_bug.cgi?id=1069610 , hoping I could find some workaround. But I couldn't. If there is no abvious workaround, would there be other ways like : - find the bare logical volume, shut down the VM, and play with low level qemu-img commands. I think I knwn how to do that, but I'm worried the oVirt database won't be in sync once I've removed the snapshot or - export the VM then re-import, if this is related to some LV space missing. Then removing the snapshot the usual way. Any advice (apart the obvious upgrade-to-4.X-sir)? -- Nicolas ECARNOT

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Host Non Operational - Filed to configure management network on host Vollansicht Vollansicht
by jean.hort＠web.de 21 Nov '17

21 Nov '17

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Host Non Operational - Filed to configure management network on host Vollansicht
by jean.hort＠web.de 21 Nov '17

21 Nov '17

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oVirt 4.1.7: Duplicate MAC addresses had to be introduced into mac pool violating no duplicates setting.
by nicolas＠devels.es 20 Nov '17

20 Nov '17

Hi, We just upgraded from 4.1.6 to 4.1.7 and just after the engine was brought back the following event showed up: Duplicate MAC addresses had to be introduced into mac pool violating no duplicates setting. Can someone explain why is that? Thanks. Nicolás

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Re: [ovirt-users] Some tests results: lustrefs over nfs on VM
by Arman Khalatyan 19 Nov '17

19 Nov '17

hi Yaniv, yes for sure I hit some cache in between but not the vm cache, it has a 4GB ram, with oflag=direct I get about 120MB/s for the data analysis the cache is our friend:) The backend is a lustrefs 2.10.x. yes we have dedicated 10G on the hosts, where we can limit the vm interface to 10Gbit? Am 19.11.2017 8:33 nachm. schrieb "Yaniv Kaul" <ykaul(a)redhat.com>: On Sun, Nov 19, 2017 at 7:08 PM, Arman Khalatyan <arm2arm(a)gmail.com> wrote: > Hi, in our environment we got pretty good io performance on VM, with > following configuration: > lustrebox: /lust mounted on "GATEWAY" over IB > GATEWAY: export /lust as nfs4 on 10G interface > VM(test.vm): import as NFS over 10G interface > > [root(a)test.vm <root(a)gans.vm> ~]# dd if=/dev/zero bs=128K count=100000 > Without oflag=direct, you are hitting (somewhat) the cache. > > of=/test/tmp/test.tmp > 100000+0 records in > 100000+0 records out > 13107200000 <(310)%20720-0000> bytes (13 GB) copied, 20.8402 s, 629 MB/s > looks promising for the future deployments. > Very - what's the backend storage? > > only one problem remains that on heavy io I get some wornings that the vm > network is saturated, are there way to configure the bandwidth limits to > 10G for the VM Interface?? > Yes, but you really need a dedicated storage interface, no? Y. > > > thank you beforehand, > Arman. > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > >

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Some tests results: lustrefs over nfs on VM
by Arman Khalatyan 19 Nov '17

19 Nov '17

Hi, in our environment we got pretty good io performance on VM, with following configuration: lustrebox: /lust mounted on "GATEWAY" over IB GATEWAY: export /lust as nfs4 on 10G interface VM(test.vm): import as NFS over 10G interface [root(a)test.vm <root(a)gans.vm> ~]# dd if=/dev/zero bs=128K count=100000 of=/test/tmp/test.tmp 100000+0 records in 100000+0 records out 13107200000 bytes (13 GB) copied, 20.8402 s, 629 MB/s looks promising for the future deployments. only one problem remains that on heavy io I get some wornings that the vm network is saturated, are there way to configure the bandwidth limits to 10G for the VM Interface?? thank you beforehand, Arman.

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