One lvm vg in exclusive mode means just one node at time can access to the data
Il giorno 22 marzo 2012 16:47, Lentes, Bernd < bernd.len...@helmholtz-muenchen.de> ha scritto: > ** > Hi, > > thanks for the quick response. So the data is not destroyed if two > identicals VM's access the LV simultaneouslay ? I thought it would be. I > will have stonith too. > What is about live migration ? Is it possible with my setup ? > > > Bernd > > > -- > Bernd Lentes > > Systemadministration > Institut für Entwicklungsgenetik > HelmholtzZentrum münchen > bernd.len...@helmholtz-muenchen.de > phone: +49 89 3187 1241 > fax: +49 89 3187 3826 > http://www.helmholtz-muenchen.de/idg > > Wer Visionen hat, soll zum Hausarzt gehen > Helmut Schmidt > > > ------------------------------ > *From:* emmanuel segura [mailto:emi2f...@gmail.com] > *Sent:* Thursday, March 22, 2012 4:12 PM > *To:* The Pacemaker cluster resource manager > *Subject:* Re: [Pacemaker] 2 Node Cluster: some principal questions > > if you have in you cluster vg exclusive="yes" and remember it's good > idea have stonith configured > > Il giorno 22 marzo 2012 15:52, Lentes, Bernd < > bernd.len...@helmholtz-muenchen.de> ha scritto: > >> Hi, >> >> i'd like to establish a 2 Node-Cluster. My OS will be SLES 11 and HAE. My >> services will run in VM's using KVM. I will install the VM's in LV's, one >> LV for one VM. The LV's will be plain partitions, having no filesystem. I >> have read this is quicker with KVM than installing a VM in a LV with >> filesystem. >> My LV's will reside on a FC SAN. Both nodes have access to the SAN. For >> the LV's, i will use cLVM. >> >> My questions are: >> >> - let's assume that, due to an error, a VM will run on both nodes. Does >> cLVM prevent that both VM's have simultaneously access to the corresponding >> LV ? So that the data is not destroyed. >> >> - Is it possible that some VM's run on the first node and other VM's run >> on the second node simultaneously ? >> >> - what do you think about my setup ? >> >> >> >> Bernd >> >> -- >> Bernd Lentes >> >> Systemadministration >> Institut für Entwicklungsgenetik >> HelmholtzZentrum münchen >> bernd.len...@helmholtz-muenchen.de >> phone: +49 89 3187 1241 >> fax: +49 89 3187 3826 >> http://www.helmholtz-muenchen.de/idg >> >> Wer Visionen hat, soll zum Hausarzt gehen >> Helmut Schmidt >> >> Helmholtz Zentrum München >> Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH) >> Ingolstädter Landstr. 1 >> 85764 Neuherberg >> www.helmholtz-muenchen.de >> Aufsichtsratsvorsitzende: MinDir´in Bärbel Brumme-Bothe >> Geschäftsführer: Prof. Dr. Günther Wess und Dr. Nikolaus Blum >> Registergericht: Amtsgericht München HRB 6466 >> USt-IdNr: DE 129521671 >> >> _______________________________________________ >> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org >> http://oss.clusterlabs.org/mailman/listinfo/pacemaker >> >> Project Home: http://www.clusterlabs.org >> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf >> Bugs: http://bugs.clusterlabs.org >> > > > > -- > esta es mi vida e me la vivo hasta que dios quiera > > > ------------------------------ > Helmholtz Zentrum München > Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH) > Ingolstädter Landstr. 1 > 85764 Neuherberg > www.helmholtz-muenchen.de > Aufsichtsratsvorsitzende: MinDir´in Bärbel Brumme-Bothe > Geschäftsführer: Prof. Dr. Günther Wess und Dr. Nikolaus Blum > Registergericht: Amtsgericht München HRB 6466 > USt-IdNr: DE 129521671 > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org > > -- esta es mi vida e me la vivo hasta que dios quiera
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