Hello.
I assembled mdadm raid0 from two Samsung 970 Evo plus NVMe SSDs, created an LVM VG on it and gave the thick LV as a virtual machine disk based on Centos8.
On a hypervisor, this RAID delivers about 7GB/s read performance.
When I test inside the guest OS with:
fio --readonly --name=onessd...
I use LVM-thin as the main storage and have repeatedly noticed that cloning VMs or recovering using proxmox often means that the VM is broken if LVM-thin is used as the target storage. In Windows 10, this means that after cloning, the VM boots only in recovery mode and does not see a drives...
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