somejfn commented on issue #2890: KVMHAMonitor thread blocks indefinitely while NFS not available URL: https://github.com/apache/cloudstack/issues/2890#issuecomment-430701430 This morning I confirmed the behavior on 4.9 is different than 4.11. When there's a long lasting (say 15 minutes) NFS hang the agent stays Up and when NFS operations resumes everyone's happy. Note we did disable the automatic reboot in the heartbeat script for that to work. This saved us from massive reboots and VM outages before when we had a network maintenance that cut all KVM host from NFS for 22 minutes.
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