somejfn commented on issue #2890: KVMHAMonitor thread blocks indefinitely while NFS not available URL: https://github.com/apache/cloudstack/issues/2890#issuecomment-433896656 Correct. Only VM-HA enabled would get restarted and create a duplicate when the host goes down. Still, I don't think this a good behavior to fire VM-HA (because of host Up --> Down state) under any scenarios caused by transient storage disconnection. If the host goes down after 5 minutes, VM-HA restarts VM about one minute later, and then if the NFS issue gets resolved you have almost 100% probability of root disk corruption and you don't know where the 2 VMs are since Cloudstack only remembers the last copy it started. On Mon, Oct 29, 2018 at 3:21 AM Boris Stoyanov - a.k.a Bobby < notificati...@github.com> wrote: > hi @csquire <https://github.com/csquire> @somejfn > <https://github.com/somejfn>, thanks for this issue! > > I think it's correct that the host goes into 'Down' state after loosing > it's grip on the storage, since this is basically making it inoperable. > Going into 'Disconnected' state would only mean the connection between > management and host is compromised. > > On the other hand duplicated VMs is definitely something that needs to get > addressed, prior marking the host as 'Down' when we have a VM-HA enabled. > Just to be sure, can you please confirm you don't see these duplicated VMs > on a non VM-ha enabled instances? I'd like to narrow down this issue and > make sure it's in the VM-HA logic. > > — > You are receiving this because you were mentioned. > Reply to this email directly, view it on GitHub > <https://github.com/apache/cloudstack/issues/2890#issuecomment-433810696>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/AOflqLPAw0oQ2_po-4BHKpzHRDZMUc9Hks5upqxxgaJpZM4XNOD8> > . >
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