model name : Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
model name : Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
Seems this issue isn't specific to Ubuntu. A friend, who works in a RHEL/CentOS shop with PB of data says this:
Ovirt on centos - connection issues between manager and all VMs, not os specific. Most of my VMs are also centos. 10Gbps network, gluster storage for replication x3, semi-periodic connection issues still in troubleshooting mode.
Is pretty strange then... i'm testing ESXi (cause Dell Support asked me to do so) and trying to force a crash or freeze or something in case is hardware related but I think is not going to happen again. So it could be something in the kernel that only happen in very specific cases.
In any case we are running out of options here. we tried lots of things , BIOS upgrades and downgrades, several kernels, several storages, lots of memory tweaks, No matter what we try some machines (ubuntu mostly) freeze without any trace or clue about why...
We are thinking in trying XEN and see if it makes a diference
Appears from here to be something related to oVirt/KVM on CentOS.
In our case is KVM but in Ubuntu 16.04 and Proxmox as the manager... so, Kernel and KVM in common. Not even the CPU gen since we have a modern model and almost identical models without any problems.
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