- Users - oVirt List Archives

Re: [Users] GSoC 14 Idea Discussion - virt-sparsify integration
by Federico Simoncelli 20 Mar '14

20 Mar '14

----- Original Message ----- > From: "Utkarsh Singh" <utkarshsins(a)gmail.com> > To: users(a)ovirt.org > Cc: fsimonce(a)redhat.com > Sent: Friday, March 7, 2014 6:16:46 PM > Subject: GSoC 14 Idea Discussion - virt-sparsify integration > > Hello, > > I am Utkarsh, a 4th year undergrad from IIT Delhi and a GSoC-14 > aspirant. I have been lately involved in an ongoing project Baadal > Cloud Computing Platform in my institute, which has got me interested > in oVirt for a potential GSoC project. > > I was going through the virt-sparsify integration project idea. I have > gone through the architecture documentation on the oVirt website. As > far as I understand, the virt-sparsify integration needs to be done on > the VDSM daemon, and it's control is either going to be completely > independent of ovirt-engine (for example running it once every 24 > hours), or it's something that is centrally controlled by the > ovirt-engine through XML/RPC calls. The details are not specified in > the project ideas page. I would like to ask - The request to sparsifying the image is controlled by ovirt-engine. The user will pick one (or eventually more) disk(s) that are not in use (vm down) and he'll request to sparsify it/them. > 1. What would be the proposed ideal implementation? (Central-Control > or Independent-Control) Central-Control > 2. Is virt-sparsify usage going to be automated or > administrator-triggered, or a combination of both? administrator-triggered > There are some aspects of the idea, which I would like to discuss > before I start working on a proposal. > > It's not necessary that an automated usage of virt-sparsify is limited > to any simple idea. Architecture documentation states that > ovirt-engine has features like Monitoring that would allow > administrators (and possibly users) to be aware of vm-guest > performance as well as vm-host performance. I am not very sure about > how this data is collected, Is it done through MoM, or Is this > directly done by VDSM, or is someone else doing this (for hosts). It > would be great if someone can explain that to me. This information > about vm-guest usage and vm-host health can help in determining how > virt-sparsify is to be used. The vm/hosts statistics are gathered and provided by VDSM. Anyway I would leave this part out at the moment. The virt-sparsify command is a long running task and in the current architecture it can be only an SPM task. There is some ongoing work to remove the pool and the SPM (making virt-sparsify operable by any host) but I wouldn't block on that. > I am also not very clear about the Shared Storage component in the > architecture. Does oVirt make any assumptions about the Shared > Storage. For example, the performance difference between running > virt-sparsify on NFS as compared to running it (if possible) directly > on storage hardware. If the Storage solution is necessarily a NAS > instance, then virt-sparsify on NFS mount is the only option. The storage connections are already managed by vdsm and the volume chains are maintained transparently in /rhev/data-center/... There are few differences between image files on NFS/Gluster and images stored on LVs but with regard to how to reach them it is transparent (similar path). > Right now, I am in the process of setting up oVirt on my system, and > getting more familiar with the architecture. Regarding my experience. > I am acquainted with both Java and Python. I have little experience > with JBoss, but I have worked on some other Web Application Servers > like web2py and Play Framework. My involvement in Baadal Platform has > got me acquainted with libvirt/QEMU, the details of which I have > mentioned below (if anyone is interested). Depending on the amount of time that you can dedicate to this project it seems that you could tackle both the vdsm and ovirt-engine parts. -- Federico

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[Users] el6 live snapshots and storage migration
by Simon Barrett 19 Mar '14

19 Mar '14

--_000_D86C48DF8800164BBE50B87623F7AC95481E29ADln2wio001devtra_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Is there any current combination of el6 based Engine and Node iso that supp= ort live snapshots and storage migration? I tried oVirt Node - 3.0.4 - 1.0.2014012912 but had problems with VDSM comp= atibility (VDSM version (4.14) and cannot join cluster - cluster is compat= ible with VDSM versions [4.13, 4.9, 4.11, 4.12, 4.10].) I now see this ment= ioned in https://bugzilla.redhat.com/show_bug.cgi?id=3D1067096#c0 I did try upgrading Engine to 3.3.4-1.el6 but still see the same VDSM 4.14 = problem. I also tried building the iso (as per http://www.ovirt.org/Node_Building) a= nd could see that it was downloading the qemu-kvm-rhev (which I think is ne= eded to enable the live snapshot functionality). However I got stuck adding= the vdsm plugin as the iso was being built with the 3.4.0.57rhs versions o= f the glusterfs packages whereas the plugin was dependant on glusterfs 3.4= .0-8. I already have a working Engine (3.3.2-1.el6) and Node (3.0.1 - 1.0.2.el6) = test configuration but would very much like to be able to add the live snap= shot functionality. Many thanks Simon --_000_D86C48DF8800164BBE50B87623F7AC95481E29ADln2wio001devtra_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang=3D"EN-GB" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> <p class=3D"MsoNormal">Is there any current combination of el6 based Engine= and Node iso that support live snapshots and storage migration?<o:p></o:p>= </p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">I tried oVirt Node - 3.0.4 - 1.0.2014012912 but had = problems with VDSM compatibility (VDSM version (4.14) and cannot join clust= er  - cluster is compatible with VDSM versions [4.13, 4.9, 4.11, 4.12,= 4.10].) I now see this mentioned in <a href=3D"https://bugzilla.redhat.com/show_bug.cgi?id=3D1067096#c0">https:= //bugzilla.redhat.com/show_bug.cgi?id=3D1067096#c0</a><o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">I did try upgrading Engine to 3.3.4-1.el6 but still = see the same VDSM 4.14 problem.<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">I also tried building the iso (as per http://www.ovi= rt.org/Node_Building) and could see that it was downloading the qemu-kvm-rh= ev (which I think is needed to enable the live snapshot functionality). How= ever I got stuck adding the vdsm plugin as the iso was being built with the 3.4.0.57rhs versions of the glusterfs = packages whereas the plugin was dependant on glusterfs  3.4.0-8.<o:p><= /o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">I already have a working Engine (<span class=3D"gwt-= inlinelabel">3.3.2-1.el6) and Node (3.0.1 - 1.0.2.el6) test configuration b= ut would very much like to be able to add the live snapshot functionality.<= o:p></o:p></span></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Many thanks<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Simon<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> </div> </body> </html> --_000_D86C48DF8800164BBE50B87623F7AC95481E29ADln2wio001devtra_--

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[Users] [RFI] GUI Changes for oVirt 4.0
by Itamar Heim 19 Mar '14

19 Mar '14

Hi, we are brainstorming on what should we change in the oVirt UI for 4.0. for current brainstorming phase, "anything goes" - i.e., I'd like us to ignore current limitations and flows, and envision/fantasize the "perfect solution". SO - what do YOU think we should consider for 4.0 UI concept, flows, etc. Thanks, Itamar

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[Users] CPU: Westmere vs. Ivy Bridge
by Joshua Dotson 19 Mar '14

19 Mar '14

Hello, The nodes on the cluster I'm installing have Ivy Bridge CPUs<http://ark.intel.com/products/75790/Intel-Xeon-Processor-E5-2630-v2-15M-Cac…>. The latest choice I see in the hosted-engine installer is Westmere. Am I missing out on anything significant by choosing Westmere in this case? Is there any plan to add Ivy Bridge as an option? Even if there is no difference behind the scenes from choosing Westmere, having an Ivy Bridge option would have saved me the time it took to reverse engineer the need to look at the source code to the need for the CPU family: instruction sets (performance?). Thanks, Joshua

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[Users] [ANN] oVirt 3.4.0 Second Release Candidate is now available
by Sandro Bonazzola 19 Mar '14

19 Mar '14

The oVirt team is pleased to announce that the 3.4.0 Second Release Candidate is now available for testing. Release notes and information on the changes for this update are still being worked on and will be available soon on the wiki[1]. Please ensure to follow install instruction from release notes if you're going to test it. The existing repository ovirt-3.4.0-prerelease has been updated for delivering this release candidate and future refreshes until final release. An oVirt Node iso will also be available soon. We decided to postpone Final Release by one week in order to properly test the bugs fixed since last Release Candidate. Help us make this the best release ever, testing it yourself! [1] http://www.ovirt.org/OVirt_3.4.0_release_notes -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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[Users] Cannot set Compatibility Version to 3.3
by Eric Wong 19 Mar '14

19 Mar '14

--_000_87E152BF0D55124F8311754D69D209F635546218MSEX02FRA9corps_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello oVirt gurus out there: I recently upgraded our oVirt 3.1 installation to 3.3.3. We have 2 cluster= s configuration. In the QA cluster, in which there is only one host, I can= switch the cluster's compatibility version from 3.1 to 3.3. However, on the production cluster, in which there are 10 hosts, I am not a= ble to switch the cluster compatibility version at all. I opened up the Ed= it Cluster window. Select 3.3 from the Compatibility Version dropdown list= . Click OK to save the change. But the Edit Cluster window just remain op= en. I checked all the logs in the ovirt-engine. Do not see anything obvious. = All our hosts are running CentOS 6.5 & vdsm-4.13.3-4. Can you guys provide some pointers as to where to check for failure? Thanks in advance. Eric --_000_87E152BF0D55124F8311754D69D209F635546218MSEX02FRA9corps_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <meta name=3D"Generator" content=3D"Microsoft Word 14 (filtered medium)"> <style></style> </head> <body lang=3D"EN-US" link=3D"blue" vlink=3D"purple"> <div class=3D"WordSection1"> <p class=3D"MsoNormal">Hello oVirt gurus out there:<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">I recently upgraded our oVirt 3.1 installation to 3.= 3.3.  We have 2 clusters configuration.  In the QA cluster, in wh= ich there is only one host, I can switch the cluster’s compatibility = version from 3.1 to 3.3.<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">However, on the production cluster, in which there a= re 10 hosts, I am not able to switch the cluster compatibility version at a= ll.  I opened up the Edit Cluster window.  Select 3.3 from the Co= mpatibility Version dropdown list.  Click OK to save the change.  But the Edit Cluster window just remain open.<o:= p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">I checked all the logs in the ovirt-engine.  Do= not see anything obvious.  All our hosts are running CentOS 6.5 &= vdsm-4.13.3-4.  <o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Can you guys provide some pointers as to where to ch= eck for failure?<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Thanks in advance.<o:p></o:p></p> <p class=3D"MsoNormal">Eric<span style=3D"color:#1F497D"><o:p></o:p></span>= </p> <p class=3D"MsoNormal"><o:p> </o:p></p> </div> </body> </html> --_000_87E152BF0D55124F8311754D69D209F635546218MSEX02FRA9corps_--

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[Users] changing the password of the ovirt root ca
by Sven Kieske 19 Mar '14

19 Mar '14

Hi, does it have any side effects if I change the password which protects the private root CA key ? I guess not, but I want to be sure :-) -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen

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[Users] Attach floppy as [sysprep] to VM - API
by Tejesh M 18 Mar '14

18 Mar '14

Hi, I want to attach floppy as [sysprep] to windows VM in the Run once via API. can you help? I want to do sysprep on windows 2008

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[Users] affects of changing compatibility setting on running cluster
by Charles Weber 18 Mar '14

18 Mar '14

Hi everyone, I believe I need to change my cluster compatibility level and would like to know if I can do this ona live cluster or if I have to change everything to maintenance mode first. I ran engine setup and upgraded to current engine level then tried to add a new node using the 3.3.4 el6 iso. This resulted in an error: Host x.x.x.x is installed with VDSM version (4.14) and cannot join cluster Default which is compatible with VDSM versions [4.13,4.9,4.11,4.12,4.10]. My current versions are: Engine 3.3.4-1.el6 at compatibiltiy version 3.2 2 Nodes running CentOS 6.4 with VDSM 4.10.3-0.36.23.el6 Am I correct that I need to change the compatibility version to 3.3? This has some production VMs, do I need to turn everything off first or is this a non-interruptive change? How will this upgrade affect my current 2 hosts at their version? My original idea was to migrate working VMs to new ovirt ISO node and then re-install original nodes to the same version off the 3.3.4 el6 iso. I appreciate any advice. Chuck

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Re: [Users] Instructions to add a remote controlled power strip not in the native list?
by Yedidyah Bar David 17 Mar '14

17 Mar '14

------=_Part_1021355_2144139839.1395071630139 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Hi, (Replying also to the list) ----- Original Message ----- > From: "David Smith" <dsmith(a)mypchelp.com> > To: "Yedidyah Bar David" <didi(a)redhat.com> > Sent: Monday, March 17, 2014 5:01:55 PM > Subject: Re: [Users] Instructions to add a remote controlled power strip not > in the native list? > Hi Yedidyah, > Keep in mind it appears that your instructions are assuming some level of in > depth knowledge of *some* database not described in that thread. > In other words, for someone not extremely familiar with the oVirt database > location and tables, would not have a clue as to what you're talking about > in this email. > I'm guessing this database is located locally on my ovirt-engine, but I > wouldn't know where to start in how to get into it without causing major > problems (ie, do I need to turn off the engine first?) and it would help if > there were a detailed example with sql commands to make the necessary > modifications to the dB to add a fence agent completely. This wasn't my email, it was Eli Mesika's. I just remembered that he sent it so it was easy to find. I agree that the instructions are not complete. The database was created during setup - you were asked about that and probably accepted the defaults, which create a local database called 'engine'. You can connect to it by doing: su - postgres psql engine Obviously, do not change anything before you understand what you are doing and have some good backup. You can read, and usually update, without taking the engine down. There is quite a lot of material on the ovirt wiki - please search and read a bit - e.g. for 'ovirt database'. Do not hesitate to ask (on-list) again if you have questions. You can also ask on irc for faster help. Best regards, -- Didi ------=_Part_1021355_2144139839.1395071630139 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><body><div style=3D"font-family: times new roman, new york, times, se= rif; font-size: 12pt; color: #000000"><div>Hi,<br></div><div><br></div><div= >(Replying also to the list)</div><div><br></div><hr id=3D"zwchr"><blockquo= te style=3D"border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;= color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-f= amily:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"David Smith= " <dsmith(a)mypchelp.com><br><b>To: </b>"Yedidyah Bar David" <didi@r= edhat.com><br><b>Sent: </b>Monday, March 17, 2014 5:01:55 PM<br><b>Subje= ct: </b>Re: [Users] Instructions to add a remote controlled power strip not= in the native list?<br><div><br></div><div dir=3D"ltr">Hi Yedidyah,<div>Ke= ep in mind it appears that your instructions are assuming some level of in = depth knowledge of *some* database not described in that thread. </div= ></div></blockquote><blockquote style=3D"border-left:2px solid #1010FF;marg= in-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:norma= l;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12p= t;"><div dir=3D"ltr"><div><br></div><div>In other words, for someone not ex= tremely familiar with the oVirt database location and tables, would not hav= e a clue as to what you're talking about in this email.</div><div><br></div= ><div>I'm guessing this database is located locally on my ovirt-engine, but= I wouldn't know where to start in how to get into it without causing major= problems (ie, do I need to turn off the engine first?) and it would help i= f there were a detailed example with sql commands to make the necessary mod= ifications to the dB to add a fence agent completely.</div></div></blockquo= te><div><br></div><div><div>This wasn't my email, it was Eli Mesika's. I ju= st remembered that he sent it so it was easy to find.</div><div><br></div><= div>I agree that the instructions are not complete.</div><div><br></div><di= v>The database was created during setup - you were asked about that and pro= bably accepted the defaults,</div><div>which create a local database called= 'engine'. You can connect to it by doing:</div><div>su - postgres</div><di= v>psql engine</div><div><br></div><div>Obviously, do not change anything be= fore you understand what you are doing and have some good backup.</div><div= >You can read, and usually update, without taking the engine down.</div><di= v><br></div><div>There is quite a lot of material on the ovirt wiki - pleas= e search and read a bit - e.g. for 'ovirt database'.</div><div><br></div><d= iv>Do not hesitate to ask (on-list) again if you have questions.</div><div>= <br></div><div>You can also ask on irc for faster help.</div></div><div><br= ></div><div>Best regards,</div><div>-- <br></div><div><span name=3D"x"></sp= an>Didi<br><span name=3D"x"></span><br></div></div></body></html> ------=_Part_1021355_2144139839.1395071630139--

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