On 11/19/2012 08:02 PM, Adam Tkáč wrote: > > Hello, > > I use oVirt 3.1.0. > > Does anyone have an idea how to efficiently share VM templates between > multiple datacenters which use local storages for VM images? I tried > two methods: > > 1. Add another cluster to "local storage datacenter" which failed with > oVirt error that this isn't allowed > 2. Tried to create new NFS data domain but this isn't possible because > oVirt interface allows me to create only NFS export or NFS ISO domains > (not data domain) > > So every time when I would like to use some template in other > datacenter, I have to export it to export domain and then import it in > other datacenter. This isn't optimal way because templates are > duplicated over datacenters. Duplication causes problems - when I want > to update template, I must update it and copy to all datacenters > again. And, of course, duplicated templates consume disk space. how did you envision doing this without consuming disk space? a shared NFS domain for the templates?

> > "Non-oVirt" solution, when I manually export part of local storage of > one datacenter with templates via NFS and then mount it in other > datacenters is also ok but I'm not sure if it will work.

On 11/22/2012 03:18 PM, Adam Tkáč wrote: > > 2012/11/22 Itamar Heim <iheim(a)redhat.com&gt;: >> >> On 11/19/2012 08:02 PM, Adam Tkáč wrote: >>> >>> >>> Hello, >>> >>> I use oVirt 3.1.0. >>> >>> Does anyone have an idea how to efficiently share VM templates between >>> multiple datacenters which use local storages for VM images? I tried >>> two methods: >>> >>> 1. Add another cluster to "local storage datacenter" which failed with >>> oVirt error that this isn't allowed >>> 2. Tried to create new NFS data domain but this isn't possible because >>> oVirt interface allows me to create only NFS export or NFS ISO domains >>> (not data domain) >>> >>> So every time when I would like to use some template in other >>> datacenter, I have to export it to export domain and then import it in >>> other datacenter. This isn't optimal way because templates are >>> duplicated over datacenters. Duplication causes problems - when I want >>> to update template, I must update it and copy to all datacenters >>> again. And, of course, duplicated templates consume disk space. >> >> >> >> how did you envision doing this without consuming disk space? a shared >> NFS >> domain for the templates? > > > Exactly. To be more precise, I imagine either NFS/Fibre Channel/iSCSI > should be possible. However as I wrote above, I'm unable to create NFS > data domain when datacenter uses "local" storage. true, this is still a limitation we need to resolve (and plan to), but not immediate

> > Regards, A > >>> >>> "Non-oVirt" solution, when I manually export part of local storage of >>> one datacenter with templates via NFS and then mount it in other >>> datacenters is also ok but I'm not sure if it will work. >> >> >> >>