- Users - oVirt List Archives

[Users] ovirt vs openstack
by Neo Vlanik 08 Sep '12

08 Sep '12

Hi, Forgive me if this is a dump question. What is the difference between ovirt and openstack projects? Are both of these projects perform the same job creating a cloud? Thanks, Neo

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[Users] HowTo: Using EL6 hosts with Ovirt
by Dead Horse 07 Sep '12

07 Sep '12

I took the liberty of creating a wiki page on how to use EL6 based hosts with the ovirt-engine. It can be found here: http://wiki.ovirt.org/wiki/Using_EL6_hosts_with_Ovirt Feel free to change/edit/contribute or provide feedback. - DHC

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[Users] oVirt-engine Migration Docs
by Neil 07 Sep '12

07 Sep '12

Hi guys, I've read the following regarding upgrading from 3.0 to 3.1... "Due to the nature of this upgrade, we DO NOT recommend it, users are advised to do a 3.1 clean installation, and to import all VM's and template into the new installation." I'm running a live ovirt-engine(very early 3.1 release with no upgrade path) system with 3 VM's and I'd like to do the recommended -- "clean installation and import all VM's and template", but I'd like to know if there are any detailed guides on how to do this? I also have an unused server that I can use as a spare host that I can add into my clean engine install to get the VDSM onto the latest version as well, but how do you go about exporting and importing the VM's and the template? I am working on a live system and downtime needs to be limited, not sure if this is the correct procedure? Prepare old engine: 1.) Create a export storage domain 2.) Suspend each VM and export (presume suspending is enough and they don't need to be shutdown?) 3.) Detach export storage domain Prepare new engine machine: 1.) Install new ovirt-engine 2.) "Restore previous keystore and preserve .sh scripts" presume this is how the configs and DB are restored? 3.) Log into ovirt as admin and add only the spare host (to ensure that VDSM 4.10 is used, because I'm currently using VDSM 4.9) 4.) Attach export storage domain 5.) Import VM's all running on new "spare" host Upgrade old VDSM hosts: 1.) Remove VDSM 4.9 on old hosts(2 of them)? 2.) Add/install the new hosts from inside webadmin to get the old hosts up to VDSM 4.10? I'll gladly document the steps in detail if there is no detailed guide already for this. Thanks, any assistance is greatly appreciated. Regards. Neil Wilson.

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[Users] Problem with creating a glusterfs volume
by Dominic Kaiser 06 Sep '12

06 Sep '12

So I have a problem creating glusterfs volumes. Here is the install: 1. Ovirt 3.1 2. 4 Nodes are Fedora 17 with kernel 3.3.4 - 5.fc17.x86_64 3. 4 nodes peer joined and running 4. 4 nodes added as hosts to ovirt 5. created a directory on each node this path /data 6. chmod 36.36 -R /data all nodes 7. went back to ovirt and created a distributed/replicated volume and added the 4 nodes with brick path of /data I received this error: Creation of Gluster Volume maingfs1 failed. I went and looked at the vdsm logs on the nodes and the ovirt server which did not say much. Where else should I look? Also this error is vague what does it mean? -- Dominic Kaiser Greater Boston Vineyard Director of Operations cell: 617-230-1412 fax: 617-252-0238 email: dominic(a)bostonvineyard.org

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[Users] HP Integrated Lights Out 3 standard
by Dmitriy A Pyryakov 06 Sep '12

06 Sep '12

--0__=C9BBF0E2DFD3AD458f9e8a93df938690918cC9BBF0E2DFD3AD45 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: quoted-printable Hello, I have no ilo3 type of fencing device in "Power Management" tab of "Edi= t Host" menu (only ilo). If I try to use ilo for Integrated Lights-Out 3 - test is failed. In http://wiki.ovirt.org/wiki/Quick_Start_Guide#Attach_Fedora_Host pag= e I find an information that ilo3 must be presented in "Power Management" t= ab. What can I do to make ilo3 be management? - - Dmitriy Pyryakov VimpelCom Ltd.= --0__=C9BBF0E2DFD3AD458f9e8a93df938690918cC9BBF0E2DFD3AD45 Content-type: text/html; charset=US-ASCII Content-Disposition: inline Content-transfer-encoding: quoted-printable <html><body> Hello, I have no ilo3 type of fencing dev= ice in "Power Management" tab of "Edit Host" menu (= only ilo). If I try to use ilo for Integrated= Lights-Out 3 - test is failed. In <a href=3D"http://wiki.o= virt.org/wiki/Quick_Start_Guide#Attach_Fedora_Host">http://wiki.ovirt.org/wiki/Quick_Star= t_Guide#Attach_Fedora_Host</a> page I find an informat= ion that ilo3 must be presented in "Power Management" tab.</f= ont> What can I do to make ilo3 be mana= gement? <ul style=3D"padding-left: 0pt"><b= r> - - Dmitriy Pyryakov VimpelCom Ltd.</ul> </body></html>= --0__=C9BBF0E2DFD3AD458f9e8a93df938690918cC9BBF0E2DFD3AD45--

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[Users] ovirt-engine service restart with running virtual machines?
by Adam Tkáč 06 Sep '12

06 Sep '12

Hello all, I deployed oVirt as management platform for virtual machines in one datacenter and now I'm trying to get it working with M$ ActiveDirectory. The oVirt engine runs on the same physical machine as host and there are running virtual machines. I successfully run "engine-manage-domains -action=add ...": and it wrote this: ... Successfully added domain XXXX. oVirt Engine restart is required in order for the changes to take place (service ovirt-engine restart). Manage Domains completed successfully ... Since there are running virtual machines on the host with the engine, I would like to know if it is possible to restart ovirt-engine without shutting down virtual machines and/or putting the host into maintenance mode. Next question is if it is possible to restart ovirt-engine without affecting other running hosts with VMs in the same datacenter which engine maintains. Thank you in advance for the reply. Regards, Adam

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[Users] What are the differences between ovirt and rhev
by Danishka Navin 06 Sep '12

06 Sep '12

Hi, I want to practise virtulization with the use of rhev. What are the differences if I use ovirt? Thanks, -- Danishka Navin http://danishkanavin.blogspot.com http://twitter.com/danishkanavin http://www.flickr.com/photos/danishkanavin/

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Re: [Users] [node-devel] Help required to configure shared storage on RHEL+KVM
by Sanglikar, Amol (Serviceguard) 06 Sep '12

06 Sep '12

Hi All, Thanks for all your responses. 1/ we are using FC setup and not iSCSI. SO using SCSI is not an option for us right now. 2/ Yes you are correct NPIV will give us VHBA , but is it supported on guests as of now , both in case of RHEL6.2+ KVM and RHEV 3.0 ? If they have VHBA support then pass through helps me reach the LUNs and have SCSI PR working. 3/ Also does RHEV 3.0 support direct LUN access ? What I got to read from redhat docs is as follows. latest "BETA" release of RHEV 3.1 seems to be only having direct LUN access. http://www.redhat.com/about/news/archive/2012/8/red-hat-delivers-first-beta… New virtual machine storage features including hotplug support and direct LUN access SO I guess only option I have os to wait for RHEV 3.1 ? Again Thanks a lot for answering my queries. Thanks & Regards, -Amol -----Original Message----- From: Johan Kragsterman [mailto:johan.kragsterman@capvert.se] Sent: Thursday, August 30, 2012 12:46 PM To: Itamar Heim Cc: Sanglikar, Amol (Serviceguard); David Jaša; users(a)ovirt.org Subject: Re: [Users] [node-devel] Help required to configure shared storage on RHEL+KVM Hi! I don't think this is an oVirt discussion, but I can respond anyway, since the storage part of oVirt, imho, is a bit after in development, or has a strategy I don't really understand, perhaps. Maybe oVirt storage development strategy is hard tied to gluster? You don't tell us about the storage backend you got? If you got FC you can create an NPIV on the RHEL 6.2 host. I don't think(unsupported so far...) you can create NPIV on oVirt node or RHEL-V node, but I'm not sure about the latter... NPIV will give you the raw LUN directly to a VHBA, but I am not sure the oVirt/KVM VM can use it the VHBA...? Or as Itamar writes, you can always use iScsi.... Rgrds Johan -----users-bounces(a)ovirt.org wrote: ----- To: users(a)ovirt.org, "Sanglikar, Amol $Serviceguard$" <amols(a)hp.com> From: Itamar Heim Sent by: users-bounces(a)ovirt.org Date: 2012.08.29 13:53 Cc: David Jaša <djasa(a)redhat.com> Subject: Re: [Users] [node-devel] Help required to configure shared storage on RHEL+KVM On 08/29/2012 12:34 PM, David Jaša wrote: > (moving to users@, node-devel is definitely a wrong list but I'm not > sure about a correct one) > > hi Amol, > > Sanglikar, Amol (Serviceguard) píše v Pá 24. 08. 2012 v 10:20 +0000: >> Hi Ovirt dev-Community, >> >> >> >> We have a host running RHEL 6.2 + KVM , and created 2 Virtual machines >> on the host which are running RHEL6.2. >> >> >> >> We are trying to configure shared storage for 2 VMs. This shared >> storage on VMs should understand the SCSI requests. > > IIRC, if you need to pass through SCSI requests from the VM to the > underlying block device, you need virtio-scsi qemu device that is > included in RHEL as a tech-preview since 6.3 - again IIRC. not sure this is about ovirt at all? why not iscsi from guests to storage directly? > >> The reason for this requirement is that we would be using SCSI-3 PR >> (persistent reservation ) utils, which is sg3_utils to register / >> reserve on the storage/disks. >> >> >> >> We believe that exposing the raw LUNs from host to VMs as shared >> storage (which is same as RDM - Raw Device Mapping in VMware ESX >> environment ) would meet our above stated requirement. >> >> >> >> So can you please help us understand the following >> >> >> >> 1/ How to expose the Raw LUNs , from host ( RHEL 6.2 + KVM ) to >> Virtual machines which are running RHEK 6.2. >> > > You should create a shared disk but you can't get it really raw in terms > of scsi commands unless you switch to virtio-scsi. It is raw in a sense > of not using intermediate layers like qcow2 on top of the LUN. > > David > >> 2/ Also , if there is any alternate way to achieve the above >> requirement in RHEL + KVM environment, apart from the mechanism we >> stated , please let us know. _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users

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[Users] ovirt node & NFS
by Winfried de Heiden 05 Sep '12

05 Sep '12

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[Users] Node Problems
by Dominic Kaiser 05 Sep '12

05 Sep '12

Hey All, I know this has been brought up before but I am using ovirt-node-iso-2.5.0-2.0.fc17.iso I have added this node and have brought up fiber channel main storage on it. I for the life of me can not add an nfs ISO or a Export domain. It is not running a 3.5 kernel and I have mounted these on another node running fc17. This makes no sense. There is no error while adding an import domain ISO or Export domain the spinning wheel stays spinning. I have left it for a full day and still spinning. Is there a node ISP that works on 3.1 with nfs? Dominic -- Dominic Kaiser Greater Boston Vineyard Director of Operations cell: 617-230-1412 fax: 617-252-0238 email: dominic(a)bostonvineyard.org

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