This page discusses a severe issue of the Hypervisor Version 1.X which is fixed by the Hypervisor Versions 2.x.

2018-01-29

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Seldom Hypervisor Freeze Problem RESOLVED! Version now 2.0 available!

Unfortunaltey the HV Version 2.0rc4 did not finally resolve the Kernel panic, that lead to a frozen Hypervisor-State. It only occured much less often. This is due to the fact that the Kernel Panic is I/O related. It is strongly recommended to upgrade to the 2.0 or later Hypervisor Version, this Version brings a new fresn qemu binary which was causing the Kernel Panics. We've tested with this new qemu both LVM and QCOW2 VMs and all worked fine. When switching back to the faulty qemu, QCOW2 VMs fail within a few minutes with below "fio" test. But with the fixed qemu they don't fail in QCOW2 mode even after 12hours running the fio test. With LVM VMs the panic nearly never happens, that's why we believed to have fixed it with the 2.0rc4 version already.

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NOTE: Instead of using the Hypervisor, any operating system can be installed on the appliance, even other Hypervisors like VMware or Microsofts HyperV. 

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