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Re: [ovirt-users] change network MTU settings without taking all the VMs down?
by Darrell Budic 05 Feb '15

05 Feb '15

I wound up manually changing the network configs on my hosts during other updates, one at a time. Then I migrated off the lower MTU host and repeated. Seemed to be minor extra bit of pause after migration completed, then things were fine (and I manually updated MTU settings on the VMs at that time, without rebooting/shutdowns). I did have to reboot one VM that went to 100% cpu and didn’t recover, but it has done that before and I think it’s a different problem with that one in particular, not the process. Then I repeated on the other host. Both though the networks in question were not synchronized, but came up fine away. Once that was all done, I updated the MTU values via the database, and now ovirt thinks everything is happy. So the manaul process Loir describes for 3.4 works, and works for 3.5 if you manage it properly. I’m still set with my vdmds forced to ifcfg persistence due to troubles with bonded interfaces in 3.5, so this was easy for me. -Darrell > On Jan 28, 2015, at 11:37 AM, Donny Davis <donny(a)cloudspin.me> wrote: > > So adding a new network was the way you went??On Jan 28, 2015 9:22 AM, Darrell Budic <budic(a)onholyground.com> wrote: >> >> 3.5.1. It’s really a “clean and tidy” thing now that I’ve got the network cleaned up, so not urgent but nice to have. Thanks for the info! >> >>> On Jan 28, 2015, at 4:05 AM, Dan Kenigsberg <danken(a)redhat.com> wrote: >>> >>> On Wed, Jan 28, 2015 at 11:03:14AM +0200, Lior Vernia wrote: >>>> Hi Darrell! >>>> >>>> There's currently no clean way to do this - we'll be looking to fix this >>>> in 3.6 (https://bugzilla.redhat.com/show_bug.cgi?id=1055454) >>>> >>>> You haven't mentioned which version of oVirt you're running - if it's >>>> 3.4 or lower, I think it would suffice to change ifcfg files on your >>>> hypervisors and restart the network service. The network will then >>>> appear as out-of-sync in the GUI, but should be fully functional with >>>> MTU 1500. You'd also want the network configuration to be saved in case >>>> of future rollbacks - Dan, how would that be done? >>> >>> up to 3.4, nothing else should be done (assuming the network config was >>> already declared "safe" and survived reboot). ifcfg is the only persistent copy. >>> >>>> >>>> If you're running 3.5, I think you need to run some vdsm shell commands >>>> on the hypervisor as we've added an abstraction layer for configuration >>>> persistence above ifcfg files - again I'll ask Dan to chime in. >>> >>> In 3.5 we've added a Vdsm-side persistent copy of the network, >>> which sits under /var/lib/vdsm/netconf/nets. You should edit the json >>> definitions therein in order to ensure proper network startup after >>> boot. >>> >>>> >>>> As for getting the engine network configuration to MTU 1500 (for future >>>> hypervisor configuration and for networks to not appear as out-of-sync >>>> on existing ones) without taking down all the VMs (or hot-unplugging >>>> NICs) at one point - I don't think there's currently a way other than >>>> hacking the DB... Just leaving the network out-of-sync on the hosts >>>> could result in inconveniences later on when configuring host networking. >>>> >>>> Is it worth the trouble of getting MTU 1500 instead of 1448? I presume >>>> the difference in performance would be negligible. Or are you >>>> experiencing incoming frames being dropped due to having 1500 bytes >>>> instead of 1448?... Either way, as you mentioned taking down the VMs can >>>> be a last resort, or wait for 3.6 where it should be simpler :) >>>> >>>> Yours, Lior. >>>> >>>> On 27/01/15 19:43, Darrell Budic wrote: >>>>> I finally got a couple of networks our from behind a wan based layer 2 bridge that required me to run at MTU 1448, and would like to get back up to MTU 1500. I see the GUI won’t let me do that while the network is in use. Any way around this, clean or otherwise? Restarting VMs to update them is ok, just trying to avoid having to take everything down at the same time. >>>>> >>>>> -Darrell >>>>> _______________________________________________ >>>>> Users mailing list >>>>> Users(a)ovirt.org >>>>> http://lists.ovirt.org/mailman/listinfo/users >>>>> >> >> _______________________________________________ >> Users mailing list >> Users(a)ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users

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oVirt Community Newsletter: January 2015
by Brian Proffitt 05 Feb '15

05 Feb '15

The first month of 2015 brought a new release of oVirt with engine support for Enterprise Linux 7, a new case study, and our annual journey to the biggest FLOSS event in the world. ------------------------- oVirt Software Milestones ------------------------- On January 21, oVirt 3.5 was released! http://www.ovirt.org/OVirt_3.5.1_Release_Notes For more information, and oVirt's important connection with CentOS, check out http://community.redhat.com/blog/2015/01/collaboration-with-centos-is-a-win… Bleeding-edge oVirt images are now available https://twitter.com/ovirt/status/555761019688353792 moVirt is coming! Check out this demo http://youtu.be/QnD9v70oefA ---------------- In the Community ---------------- How altruism and oVirt have helped create a free hosting service for anyone. http://www.ovirt.org/CloudSpin_Case_Study Remember when open source was the target of nearly everyone in the IT industry? Good times! http://community.redhat.com/blog/2015/01/quotes-from-open-source-past/ oVirt New Year's Resolution: Building Better Community Tools http://community.redhat.com/blog/2014/12/ovirt-new-years-resolution-buildin… [English], http://iaaslee.blogspot.sg/2014/12/ovirt.html [Korean] How to Explain Open Source to the In-Laws http://opensource.com/life/15/1/open-source-explained-to-a-non-techie [English], http://framablog.org/2015/02/03/lopen-source-avec-des-mots-simples/ [French] Linux Foundation publishes open-source cloud guide http://sdtimes.com/linux-foundation-publishes-open-source-cloud-guide/ FOSDEM Talks: Utilizing NUMA architecture in oVirt https://fosdem.org/2015/schedule/event/numaovirt/ Fabricate your automated devops environment using python https://fosdem.org/2015/schedule/event/automated_devops_environment/ Validate your gerrit patches automaticly using magic hooks https://fosdem.org/2015/schedule/event/gerrit_hooks/ Docker Integration in oVirt and IaaS https://fosdem.org/2015/schedule/event/dockerovirt/ Smart VM scheduling in oVirt cluster https://fosdem.org/2015/schedule/event/smartvmsched/ oVirt and Gluster Hyperconvergence https://fosdem.org/2015/schedule/event/hyperconvergence/ Moving your Virtual Machines to oVirt with ease https://fosdem.org/2015/schedule/event/v2v/ Upcoming oVirt Talks: * SCALE13X, Los Angeles, CA Feb 20-22 Solving (NP-Hard) Scheduling Problems with oVirt and OptaPlanner http://www.socallinuxexpo.org/scale/13x/presentations/solving-np-hard-sched… ------------------------------------ Deep Dives and Technical Discussions ------------------------------------ Installing oVirt 3.5 on CentOS 7 (Hosted Engine) https://xrsa.net/2015/02/04/installing-ovirt-3-5-on-centos-7-hosted-engine/ Importing OVA Templates into RHEV http://keithtenzer.com/2015/01/12/rhev-importing-ova-templates/ Understanding Application Containers and OS-Level Virtualization http://www.datacenterknowledge.com/archives/2015/01/05/understanding-applic… Virtualizace ve víru open source [Czech] http://computerworld.cz/software/virtualizace-ve-viru-open-source-51667 Virtual desktops & lifecycle management, planning (https://www.udsenterprise.com/en/blog/2014/12/22/virtual-desktops-lifecycle…) and acquistion (https://www.udsenterprise.com/en/blog/2014/12/22/virtual-desktops-lifecycle…) Implementar Ovirt 3.5 con Self Hosted Engine [Spanish] http://blog.alhervirtual.es/implementar-ovirt-3-5-con-self-hosted-engine/ Using oVirt for the first time on a single server http://www.reddit.com/r/homelab/comments/2sgt6z/using_ovirt_for_the_first_t… HOWTO: oVirt 3.5 im "nested virtualization" Setup auf Fedora 21 [German] https://autodit.ac/de_DE/dem-ovirt-sein-nest-bauen/ After VDI there comes VMI, the virtual mobile infrastructure https://www.udsenterprise.com/en/blog/2015/01/19/after-vdi-there-comes-vmi-… Rene Koch: Enterprise Open Source Virtualisierung mit oVirt und RHEV [German] http://youtu.be/gPQLld-ZZc4 Working with oVirt Storage Management [Chinese] http://blog.csdn.net/maokexu123/article/details/42920845 -- Brian Proffitt Community Liaison oVirt Open Source and Standards, Red Hat - http://community.redhat.com Phone: +1 574 383 9BKP IRC: bkp @ OFTC

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Creating dispersed volume
by RASTELLI Alessandro 05 Feb '15

05 Feb '15

Hi, is it possible to create dispersed-distributed volumes using oVirt? Our gluster nodes are v3.6.2 Thanks Alessandro Rastelli

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VDSM...
by Koen Vanoppen 05 Feb '15

05 Feb '15

Back again... Already... So, the hypervisor got his packages... But when I tried to setup the network config I get this: INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.SetupNetworksVDSCommand] (ajp--127.0.0.1-8702-15) [21da92a6] FINISH, SetupNetworksVDSCommand, log id: 13932de5 2015-02-05 15:04:28,604 INFO [org.ovirt.vdsm.jsonrpc.client.reactors.ReactorClient] (SSL Stomp Reactor) Connecting to ovirthyp01dev.brusselsairport.aero/10.110.56.23 2015-02-05 15:04:59,040 WARN [org.ovirt.vdsm.jsonrpc.client.internal.ResponseWorker] (ResponseWorker) Exception thrown during message processing 2015-02-05 15:04:59,041 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.PollVDSCommand] (ajp--127.0.0.1-8702-15) [21da92a6] org.ovirt.engine.core.vdsbroker.vdsbroker.VDSNetworkException: VDSGenericException: VDSNetworkException: Vds timeout occured 2015-02-05 15:04:59,103 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.PollVDSCommand] (ajp--127.0.0.1-8702-15) [21da92a6] Command PollVDSCommand(HostName = ovirthyp01dev, HostId = cdf4e467-9cab-4032-bc90-aed6a04d6952) execution failed. Exception: VDSNetworkException: VDSGenericException: VDSNetworkException: Vds timeout occured 2015-02-05 15:04:59,111 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.SetupNetworksVDSCommand] (ajp--127.0.0.1-8702-15) [21da92a6] org.ovirt.engine.core.vdsbroker.vdsbroker.VDSNetworkException: VDSGenericException: VDSNetworkException: Message timeout which can be caused by communication issues 2015-02-05 15:04:59,128 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.SetupNetworksVDSCommand] (ajp--127.0.0.1-8702-15) [21da92a6] Command SetupNetworksVDSCommand(HostName = ovirthyp01dev, HostId = cdf4e467-9cab-4032-bc90-aed6a04d6952, force=false, checkConnectivity=true, conectivityTimeout=120,

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Installation issue hypervisor
by Koen Vanoppen 05 Feb '15

05 Feb '15

Hi All, I'm trying to add a new hypervisor to oVirt. But for some reason (and I already did a few in the mean while ;-) ) this **** just doesn't want to cooperate... I'm getting the following error in my engine.log: 2015-02-05 13:55:21,581 ERROR [org.ovirt.engine.core.uutils.ssh.SSHDialog] (org.ovirt.thread.pool-8-thread-16) SSH error running command root(a)ovirthyp01dev.mydomain.com:'umask 0077; MYTMP="$(TMPDIR="${OVIRT_TMPDIR}" mktemp -t ovirt-XXXXXXXXXX)"; trap "chmod -R u+rwX \"${MYTMP}\" > /dev/null 2>&1; rm -fr \"${MYTMP}\" > /dev/null 2>&1" 0; rm -fr "${MYTMP}" && mkdir "${MYTMP}" && tar --warning=no-timestamp -C "${MYTMP}" -x && "${MYTMP}"/setup DIALOG/dialect=str:machine DIALOG/customization=bool:True': java.io.IOException: Command returned failure code 1 during SSH session ' root(a)ovirthyp01dev.mydomain.com' at org.ovirt.engine.core.uutils.ssh.SSHClient.executeCommand(SSHClient.java:527) [uutils.jar:] at org.ovirt.engine.core.uutils.ssh.SSHDialog.executeCommand(SSHDialog.java:318) [uutils.jar:] at org.ovirt.engine.core.bll.VdsDeploy.execute(VdsDeploy.java:1118) [bll.jar:] at org.ovirt.engine.core.bll.InstallVdsInternalCommand.installHost(InstallVdsInternalCommand.java:154) [bll.jar:] at org.ovirt.engine.core.bll.InstallVdsInternalCommand.executeCommand(InstallVdsInternalCommand.java:81) [bll.jar:] at org.ovirt.engine.core.bll.CommandBase.executeWithoutTransaction(CommandBase.java:1193) [bll.jar:] at org.ovirt.engine.core.bll.CommandBase.executeActionInTransactionScope(CommandBase.java:1332) [bll.jar:] at org.ovirt.engine.core.bll.CommandBase.runInTransaction(CommandBase.java:1957) [bll.jar:] at org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInSuppressed(TransactionSupport.java:174) [utils.jar:] at org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInScope(TransactionSupport.java:116) [utils.jar:] at org.ovirt.engine.core.bll.CommandBase.execute(CommandBase.java:1356) [bll.jar:] at org.ovirt.engine.core.bll.CommandBase.executeAction(CommandBase.java:353) [bll.jar:] at org.ovirt.engine.core.bll.MultipleActionsRunner.executeValidatedCommand(MultipleActionsRunner.java:193) [bll.jar:] at org.ovirt.engine.core.bll.MultipleActionsRunner.runCommands(MultipleActionsRunner.java:160) [bll.jar:] at org.ovirt.engine.core.bll.MultipleActionsRunner$2.run(MultipleActionsRunner.java:169) [bll.jar:] at org.ovirt.engine.core.utils.threadpool.ThreadPoolUtil$InternalWrapperRunnable.run(ThreadPoolUtil.java:90) [utils.jar:] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [rt.jar:1.7.0_65] at java.util.concurrent.FutureTask.run(FutureTask.java:262) [rt.jar:1.7.0_65] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_65] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_65] at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_65] 2015-02-05 13:55:21,610 ERROR [org.ovirt.engine.core.bll.VdsDeploy] (org.ovirt.thread.pool-8-thread-16) [8954c66] Error during host ovirthyp01dev.mydomain.com install: java.io.IOException: Command returned failure code 1 during SSH session 'root(a)ovirthyp01dev.mydomain.com' at org.ovirt.engine.core.uutils.ssh.SSHClient.executeCommand(SSHClient.java:527) [uutils.jar:] at org.ovirt.engine.core.uutils.ssh.SSHDialog.executeCommand(SSHDialog.java:318) [uutils.jar:] at org.ovirt.engine.core.bll.VdsDeploy.execute(VdsDeploy.java:1118) [bll.jar:] at org.ovirt.engine.core.bll.InstallVdsInternalCommand.installHost(InstallVdsInternalCommand.java:154) ~ ~

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Self hosted engine iusses
by Stefano Danzi 05 Feb '15

05 Feb '15

Hello, I'm performing a self hosted engine installation for the first time. The system now has only one host. Host machine and engine VM run Centos 7 . The host uses LVM After ovirt installation on host console I see this error every 5 minutes: [ 1823.837020] device-mapper: table: 253:4: multipath: error getting device [ 1823.837228] device-mapper: ioctl: error adding target to table On /dev there are't devices that match 253:4 Seems that multipath try to add /dev/dm-4 but this isn't in /dev (and dm-* is blacklisted in multipath.conf default) Other thing is related to the engine. On oVirt web interface I can see the VM for engine running. I don't see IP address and FQDN in the list. If I try to change something in VM configuration I get the message: "Cannot edit VM. This VM is not managed by the engine." Is this correct?? Bye

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Re: [ovirt-users] Fwd: Ovirt qouta
by Donny Davis 05 Feb '15

05 Feb '15

Would the quota be set per user, because that's how things are already setup. When I make a quota it is for the whole group, which is all of my users. All of my users are in the public facing group. Thanks for your help Donny -----Original Message----- From: Roy Golan [mailto:rgolan@redhat.com] Sent: Thursday, February 5, 2015 2:17 AM To: Donny Davis; 'Yaniv Dary' Subject: Re: Fwd: [ovirt-users] Ovirt qouta On 02/05/2015 11:12 AM, Donny Davis wrote: > https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtu > alizat > ion/3.3/html-single/Administration_Guide/index.html#chap-Quotas_and_Se > rvice_ > Level_Agreement_Policy > > Group quotas can be set for Active Directory users. If a group of ten > users are given a quota of 1TB of storage and one of the ten users > fills the entire terabyte, then the entire group will be in excess of > the quota and none of the ten users will be able to use any of the > storage associated with their group. > > An individual user's quota is set for only the individual. Once the > individual user has used up all of his or her storage or run-time > quota, the user will be in excess of the quota and the user will no > longer be able to use the storage associated with his or her quota. > > I want to be able to use ovirt in this manner, without acutally having > to define a quota for each user myself so you need to setup your users with ldap groups. I believe you have to glue here your users subscription with your ldap and then that would be no problem. once your ldap domain is setup with the desired group its easy to set a quota on it. > Regards > Donny D > -----Original Message----- > From: Roy Golan [mailto:rgolan@redhat.com] > Sent: Thursday, February 5, 2015 2:04 AM > To: Yaniv Dary; donny(a)cloudspin.me > Subject: Re: Fwd: [ovirt-users] Ovirt qouta > > On 02/05/2015 08:28 AM, Yaniv Dary wrote: >> >> >> -------- Forwarded Message -------- >> Subject: [ovirt-users] Ovirt qouta >> Date: Wed, 04 Feb 2015 15:04:58 -0700 >> From: Donny Davis <donny(a)cloudspin.me> >> To: users(a)ovirt.org >> >> >> >> Does anyone know if there if a way to set quotas without manually >> doing it for each user. >> >> As many of you already know I am the proprietor of cloudspin.me where >> I offer IaaS for free on ipv6. >> >> I would like to set per user quotas without having to manually do it >> for each person. >> >> In the next couple weeks I am going to make a lot more storage >> available to users, and it would be nice if they could set things up >> how they want... One big machine, many little machines... Etc >> >> Any idea's >> > check out those 2 vids which should still be relevant for most parts > > http://www.youtube.com/watch?v=zazJ_fW05Qk > http://www.youtube.com/watch?v=y8qUoRImimY > > and > https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtu > alizat > ion/3.3/html-single/Administration_Guide/index.html#chap-Quotas_and_Se > rvice_ > Level_Agreement_Policy > > >> Thanks >> Donny D >> _______________________________________________ >> Users mailing list >> Users(a)ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users >> >> >> >

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Re: [ovirt-users] Ovirt qouta
by Ondra Machacek 05 Feb '15

05 Feb '15

Assigning it to group and add your users into that group should do the job. On 02/04/2015 11:04 PM, Donny Davis wrote: > Does anyone know if there if a way to set quotas without manually doing it for each user. > > As many of you already know I am the proprietor of cloudspin.me where I offer IaaS for free on ipv6. > > I would like to set per user quotas without having to manually do it for each person. > > In the next couple weeks I am going to make a lot more storage available to users, and it would be nice if they could set things up how they want... One big machine, many little machines... Etc > > Any idea's > > Thanks > Donny D > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users >

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Bring down one of multiple storage domains in a data center
by Rik Theys 05 Feb '15

05 Feb '15

Hi, We are planning to use oVirt to manage our virtual machine infrastructure. We would like to connect two different storage boxes to the hosts, which I believe will result in two storage domains in the same datacenter for oVirt? One of the storage boxes sometimes has to be powered down during building maintenance (electricity, cooling, ...). Will the data center with the two storage domains attached still be considered "up" when one of the storage domains is no longer available? Is it sufficient to power down the VM's with disks on the affected storage domain and to put the affected storage domain in maintenance? Will oVirt keep the datacenter "up" and keep on managing the remaining VM's on the other storage domain? One of the storage domains will be a SAS-connected external storage box. There will be two SAS connections per host to the storage box so multipath should see the two paths. My understanding is that anything detected by multipathd is considered "FC" storage by oVirt. Is that correct? Regards, Rik

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Ovirt qouta
by Donny Davis 04 Feb '15

04 Feb '15

Does anyone know if there if a way to set quotas without manually doing it for each user. As many of you already know I am the proprietor of cloudspin.me where I offer IaaS for free on ipv6. I would like to set per user quotas without having to manually do it for each person. In the next couple weeks I am going to make a lot more storage available to users, and it would be nice if they could set things up how they want... One big machine, many little machines... Etc Any idea's Thanks Donny D

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