On Thu, Dec 31, 2015 at 3:44 AM, Donny Davis <[email protected]> wrote: > I would say you would be much better off picking two hosts to do your HE on > and setting up drdb for the HE storage. You will have fewer problems with > your HE.
Is drdb an oVirt thing? Or are you suggesting a db backup or replicated sql db solution that I would cut over to manually. > On Thu, Dec 31, 2015 at 1:41 AM, Sahina Bose <[email protected]> wrote: >> >> If you mean, creating new gluster volumes - you need to make sure the >> gluster service is enabled on the Default cluster. The cluster that HE >> creates, has only virt service enabled by default. Engine should have been >> installed in "Both" mode like Roy mentioned. I went over those settings with limited success. I went through multiple iterations of trying to stand up HE on gluster storage. Then I gave up on that and tried NFS storage. Ultimately it always came down to sanlock errors (both gluster and NFS storage). I tried restarting the sanlock service, which would lead to watchdog rebooting the hosts. When the host came back up it almost seemed like things had started working. I could see begin to see/create gluster volumes (see hosted_storage, or begin to create a data storage domain) But when I would try to activate the hosted_storage domain things would start to fall apart again. sanlock as far as I can tell. I am currently running the engine on a physical system and things are working fine. I am considering taking a backup and attempting to use the HE physical to VM migration method, time permitting. >> On 12/28/2015 12:43 AM, Roy Golan wrote: >> >> >> 3 way replica is the officially supported replica count for VM store use >> case. If you wish to work with replica 4, you can update the >> supported_replica_count in vdsm.conf Thanks for that insight. I think I just experienced the bad aspects of both quorum=auto and quorum=none. I don't like replica 3, because you can only have one brick offline at a time. I think N+2 should be the target for a production environment. (so you have the capacity for a failure while doing maintenance). Would adding an arbiter effect the quorum status? Is 3x replica and 1x arbiter considered a replica 3 or 4? >> No chicken and egg here I think. You want a volume to be used as your >> master data domain and creating a new volume in a new gluster-cluster is >> independent of your datacenter status. >> >> You mentioned your hosts are on default cluster - so make sure your >> cluster support gluster service (you should have picked gluster as a service >> during engine install) I chose "both" during engine-setup, although I didn't have "gluster service" enable on the default cluster at first. Also vdsm-gluster rpm was not installed (I sort of feel like 'hosted-engine --deploy' should take care of that. Adding a host from my current physical engine using the "add host" gui didn't bring it in either. Thanks for the input! _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
