On Fri, Jul 15, 2016 at 3:47 PM, Fernando Frediani < fernando.fredi...@upx.com.br> wrote:
> One of the things I don't like very much in oVirt is the LVM on Shared > Block storage, but unfortunately there are no other options. One day > perhaps a VMFS5 equivalent will come up somewhere. > For some use cases, direct LUN is a great solution. > > I would avoid it and put a server in between the SAN and the oVirt Nodes > and use NFS in order to abstract it, that would give you more flexibility > and keep you away from LVM. But in your case if you don't have 10GbE > interfaces you will loose on performance using 1GbE interfaces. > Even 10g would be difficult to compete with (what I assume is usually) 2x8G FC ports, in term of performance. Some kind of bond will be needed to provide the same level of redundancy - and still the NFS server would be a single point of failure. > > With regards the migration of VMs between different CPU families I'm not > sure what is the tolerance of oVirt with it. Depending on the CPUs and the > cluster types you may be able to do migrations.So I would keep different > CPU families in different clusters. > Note that you can detach and attach complete storage domains (assuming you moved the LUNs via some other means - like SAN replication), and not import-export single VMs. This has of course its cons and pros. Y. > > Fernando > > > Em 15/07/2016 07:07, Neil escreveu: > > Hi guys, > > I'm soon going to have the following equipment and I'd like to find the > best way to utilise it.... > > 1.) One NEW FC SAN, and 3 new Dell Hosts with FC cards. > > 2.) One OLD FC SAN with 2 older HP hosts with FC cards. (old VMWare > environment) > > 3.) Another OLDER FC SAN with 2 older HP Hosts with FC cards. (old VMWare > environment) > > 4.) I have an existing oVirt 3.5 DR cluster with two hosts and NFS storage > that is current in use and works well. > > Each of the above SAN's will only have FC ports to connect to their > existing hosts, so all hosts won't be connected to all SAN's. All hosts > would be the same Centos 7.x release etc. > > All existing VM's are going to be moved to the option 1 via a baremetal > restore from backup onto a NEW oVirt platform. Once installed I'd then like > to re-commission 2 and 3 above to make use of the old hardware and SAN's as > secondary or possibly a "new" DR platform to replace or improve on option 4. > > Bearing in mind the older hardware will be different CPU generations, > would it be best to add the older hosts and SAN's as new clusters within > the same NEW oVirt installation? Or should I rather just keep 2, 3 and 4 as > separate oVirt installations? > > I know in the past live migration wouldn't work with different CPU > generations, and of course my SAN's won't be physically connected to each > of the hosts. > > In order to move VM's between 1, 2 and 3 would I need to shut the VM down > and export and import, or is there another way to do this? > > Could LSM work between across all three SANS and hosts? > > I know I can do a baremetal restore from backup directly onto either 1, 2 > or 3 if needed, but I'd like to try tie all of this into one platform if > there is good reason to do so. Any thoughts, suggestions or ideas here? > > Any guidance is greatly appreciated. > > Thank you > > Regards. > > Neil Wilson. > > > > > > > _______________________________________________ > Users mailing listUsers@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/users > > > > _______________________________________________ > Users mailing list > Users@ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > >
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users