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]> 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]> 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 | www.vsearchcloud.com | > -- | RHCE | Senior Systems Engineer | www.vcore.co | www.vsearchcloud.com |
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