[ovirt-users] Migrate Hosted Engine to new iSCSI san with new IP/Target

[Bill Taney]

I changed the IQN and the hosted engine VM now won’t boot. Is there something else I need to change.


Feb  2 11:30:43 CHISRVPRDOVND002 ovirt-ha-agent: INFO:ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine:Reloading vm.conf from the shared storage domain
Feb  2 11:30:43 CHISRVPRDOVND002 ovirt-ha-agent: INFO:ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config:Trying to get a fresher copy of vm configuration from the OVF_STORE
Feb  2 11:30:43 CHISRVPRDOVND002 kernel: dd: sending ioctl 80306d02 to a partition!
Feb  2 11:30:44 CHISRVPRDOVND002 kernel: dd: sending ioctl 80306d02 to a partition!
Feb  2 11:30:44 CHISRVPRDOVND002 kernel: dd: sending ioctl 80306d02 to a partition!
Feb  2 11:30:44 CHISRVPRDOVND002 kernel: dd: sending ioctl 80306d02 to a partition!
Feb  2 11:30:44 CHISRVPRDOVND002 ovirt-ha-agent: WARNING:ovirt_hosted_engine_ha.lib.ovf.ovf_store.OVFStore:Unable to find OVF_STORE
Feb  2 11:30:44 CHISRVPRDOVND002 journal: ovirt-ha-agent ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config ERROR Unable to get vm.conf from OVF_STORE, falling back to initial vm.conf
Feb  2 11:30:44 CHISRVPRDOVND002 ovirt-ha-agent: ERROR:ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config:Unable to get vm.conf from OVF_STORE, falling back to initial vm.conf
Feb  2 11:30:44 CHISRVPRDOVND002 ovirt-ha-agent: INFO:ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine:Current state GlobalMaintenance (score: 3400)

> On Feb 2, 2016, at 2:47 AM, Simone Tiraboschi <stirabos at redhat.com> wrote:
> 
> Hi Bill,
> in order to provide HA, the hosted-engine HA services should be able to autonomously connect the shared storage from each hosted-engine involved host.
> 
> The storage configuration is in /etc/ovirt-hosted-engine/hosted-engine.conf
> 
> So:
> 1. set global-maintenance mode
> 2. shutdown the engine VM
> 3. manually edit /etc/ovirt-hosted-engine/hosted-engine.conf on each host 
> 4. here we have a delicate point: on restart ovirt-ha-agent will connect the new storage server but the issue is that it will not call disconnectStorageServer on the previously connected one so you will probably end with VDSM that has still a reference also to the previous location and this can cause timeouts and so on if not available. Restarting VDSM is probably not enough since the the symlinks under /var/run/vdsm will not be refreshed if they are already there (  ) so I'd suggest to reboot all the hosts to avoid any possible issue.
> 5. exits global maintenance mode
> 
> On Tue, Feb 2, 2016 at 6:12 AM, bill at taney.com <mailto:bill at taney.com> <bill at taney.com <mailto:bill at taney.com>> wrote:
> In a hosted-engine deployment has anyone had to migrate to a new iSCSI SAN? I can not figure out how to move the engine(s) to a new iSCSI target.. The SAN’s can fully replicate to one another and I can move the LUN to the other device but don’t see how to stop the engine and change the settings for it’s iSCSI target to another IP/IQN. Any direction would be greatly appreciated - I am looking for any method to get this done, we have to retire the old SAN - Thanks.
> 
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