Virtio-FS


mikeyosm

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Hi team UNRAID

 

Whilst I'm waiting for 6.9 final to release (soon i hope), I thought I'd look at ways of speeding up VM disks on my 3Gbps NVME drive and exposing shares set up in UNRAID so that I could access them directly from a VM instead of using the 1GBps/10Gbps virtual NIC. Research led me to this article
https://www.reddit.com/r/VFIO/comments/eryb71/best_storage_for_vfiokvmqemu_experiment_results/

and

https://virtio-fs.gitlab.io/howto-qemu.html

I'm interested to know if virtio-fs can be made available in UNRAID so that shares can be access directly from a VM?

 

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just tried and  I see 2 things

 

running on ryzen 3900x unraid 6.9 beta29

using host-model it shows this error

error: internal error: qemu unexpectedly closed the monitor: 2020-10-02T13:27:56.354809Z qemu-system-x86_64: warning: This feature depends on other features that were not requested: CPUID.8000000AH:EDX.nrip-save [bit 3]
2020-10-02T13:27:56.355212Z qemu-system-x86_64: warning: This feature depends on other features that were not requested: CPUID.8000000AH:EDX.npt [bit 0]
2020-10-02T13:27:56.355217Z qemu-system-x86_64: warning: This feature depends on other features that were not requested: CPUID.8000000AH:EDX.nrip-save [bit 3]

and using host-passtrhough

i see this other error

error: Failed to start domain IsaacGaming
error: internal error: process exited while connecting to monitor: 2020-10-02T13:21:20.955765Z qemu-system-x86_64: -device vhost-user-fs-pci,chardev=chr-vu-fs0,queue-size=1024,tag=user,bus=pci.1,addr=0x19: Failed to write msg. Wrote -1 instead of 12.
2020-10-02T13:21:20.955793Z qemu-system-x86_64: -device vhost-user-fs-pci,chardev=chr-vu-fs0,queue-size=1024,tag=user,bus=pci.1,addr=0x19: vhost_dev_init failed: Operation not permitted

 

I supose i need to modify some permissions but not sure which of them

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