Hi Alex, What that you suggest is pretty similar to have two different Data Center. One with host HV1 and storage domain 1. The other with storage_domain_2 and HV2 host. This might work, and your two hosts will be SPM, one for DC1 and the other for DC2 I'm not sure that I follow your suggestion about setting the storage domains who is the master (the SPM will still stay the same host as before).
Regards, Maor On 01/18/2013 11:36 AM, Alex Leonhardt wrote: > I was just thinking - maybe adding a setting to storage domains who's > the "master" for that specific storage domain would get around this ? > > e.g. storage_domain_1 => master = HV1, storage_domain_2 => master = HV2, > etc. etc. > > What do you think ? > > Alex > > > > On 18 January 2013 09:34, Alex Leonhardt <[email protected] > <mailto:[email protected]>> wrote: > > Hmmm, but if I put the SPM host into Maint mode, then all the VMs > would either be migrated or (in my case, all set to manual) not > available during that time, correct ? > > Would changing the SPM priority in the host config have the desired > effect w/o putting the host into Maint mode ? Or can I only do that > when the host is in Maint mode ? > > > On 17 January 2013 20:42, Maor Lipchuk <[email protected] > <mailto:[email protected]>> wrote: > > Hi Alex, > See my last respond, I add a comment inline there. > See my comments inline > > Regards, > Maor. > > On 01/17/2013 10:04 PM, Alex Leonhardt wrote: > > Hiya, > > > > Yes i can choose the storage domain, but I cannot force the > host that is > > to be used for creating it. Even with 1Gbit network, creating > a 80GB > > disk / 40 GB disk is still significantly longer process than > actually > > required when doing a "dd" of /dev/null over the network. > > > > Is it possible to manually change who is SPM master, create the > > disks/VMs required, and change it back ? > You can maintain your SPM host, and active it back again, this will > change the SPM to be the other host which you want. > > How would that change affect the running VMs / would they try > to migrate to the other HV ? > The VM migration will still be under the same cluster. > > SPM is simply used to write to the storage domains, one of the > reasons > we use the SPM is to avoid collisions when hosts write to the same > storage domain. > > > > > Alex > > > > > > On 01/17/2013 07:39 PM, Maor Lipchuk wrote: > >> Hi Alex, > >> The storage domains are part of the Data Center, and should > not be > >> related to clusters. > >> Clusters are used for migrating VMs, which are the qemu > processes, > >> between hosts. > >> Disks are created on the storage domains regardless to clusters. > >> > >> The host which write the data in the storage domain to create > the disk > >> is the SPM. > >> You should have only one SPM in each Data Center (You can > spot which > >> host is your SPM by looking at the SPM column in the hosts tab) > >> When you create a disk you should be able to choose the > storage domain > >> which you want the disk to be created on. > >> > >> Regards, > >> Maor > > > > > > -- > > | RHCE | Senior Systems Engineer | www.vcore.co > <http://www.vcore.co> | www.vsearchcloud.com > <http://www.vsearchcloud.com> | > > > > > -- > > | RHCE | Senior Systems Engineer | www.vcore.co <http://www.vcore.co> | > www.vsearchcloud.com <http://www.vsearchcloud.com> | _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
