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    iowait when pve services down

    Physical server has 2 CPU Intel Xeon E5-2687W v3, one of the most powerful CPU on the market. The VM has 8 vCPU. The storage behind (Netapp) was not over-used. Here is how iowaits looked like, appeared as soon as pve cluster services failed, and then disapperead when services restored :
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    iowait when pve services down

    root@kvm14:~# pveversion -v proxmox-ve: 4.2-58 (running kernel: 4.4.8-1-pve) pve-manager: 4.2-17 (running version: 4.2-17/e1400248) pve-kernel-4.4.8-1-pve: 4.4.8-52 pve-kernel-4.4.13-2-pve: 4.4.13-58 pve-kernel-4.4.15-1-pve: 4.4.15-60 pve-kernel-4.4.16-1-pve: 4.4.16-64 pve-kernel-4.4.10-1-pve...
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    iowait when pve services down

    Hi, On my proxmox cluster, every nodes were red in the webUI, like if something went wrong with multicast, anyway every VMs were OK. I recovered the cluster like this on each server : killall -9 corosync systemctl restart pve-cluster systemctl restart pvedaemon systemctl restart pvestatsd But...


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