[SOLVED] Slow transfer disk passthrough

[Deft1]

Good evening,
In Proxmox I have an OpenMediaVault VM with Virtio scsi driver (single).
I have disk passthrough (sata hdd) just via adding "scsi1: ata-xxxxx" in my VM.conf.
The disk was visible in OMV and I create filesystem and SMB shares in OMV.
I didn't want to modify anything on the proxmox host, and didn't want pvestat to block my sata disk spindown (set in OMV) so I do that method.

But when I copy data from my PC (windows 11) via the SMB share, I have very slow transfer speed (11Mo/s instead of 110Mo/s - Sorry, french units ;-) ).
I tried changing the scsi driver to LSIxxxx, and virtio (not single), but same low speed. I didn't try to modify the VirtIO settings (cache/other things).
But after some days scratching my head, I wish someone could help me solving that problem.
Thanks in advance

 

[leesteken]

A similar thing happened to someone on this forum. It turned out that the (old or damaged) network cable was the limiting factor: 100 Mbits/s which resulted in 11 MB/s throughput.

 

[Deft1]

A similar thing happened to someone on this forum. It turned out that the (old or damaged) network cable was the limiting factor: 100 Mbits/s which resulted in 11 MB/s throughput.

Thanks for your reply !
I change the network cable by a new one, and problem solved !!

 

[leesteken]

How fast can OMV read/write that disk? How fast is the transfer to/from a VM on the same Proxmox virtual bridge? Check all steps between the OMV and the Windows PC, since it sounds like a network limitation.

 

[Deft1]

How fast can OMV read/write that disk? How fast is the transfer to/from a VM on the same Proxmox virtual bridge? Check all steps between the OMV and the Windows PC, since it sounds like a network limitation.

Thank you very much for your reply !
Yes it was a network limit due to the bad cable...
Sorry for the post I wouldn't think that the cable was the problem :-(
I close the thread, thank you guys