Faster VM to VM file transfer in Proxmox/KVM

Discussion in 'VMware, VirtualBox, Citrix' started by Klee, Dec 22, 2018.

  1. Klee

    Klee Well-Known Member

    Jun 2, 2016
    Likes Received:
    I need to move some database files between VM's in the same Proxmox box and would like to see if there is a faster option to increase the speed.

    Example : Copying a 56 Gb database from a Ubuntu 16.04 vm to a Xubuntu 16.04 vm via the default virtual networking, VirtilO, shows a eta of about 2-3 hours.

    According to network monitor in the Ubuntu vm its averaging about 4 MiB/s. from 1.6 to a little over 10 at times.

    Anyway to speed this up?

    Any faster virtual network device?

    Should I just accept that is as good as it gets and go play World of Tanks until its finished?

    EDIT: The top speed is much faster now, up to over 100 MiB/s at times and it looks like it's doing good now. Went from a 3 hour eta to about ~45 minutes.
    Don't know why it took about 10 minutes to get up to speed.
    Last edited: Dec 22, 2018
  2. Rand__

    Rand__ Well-Known Member

    Mar 6, 2014
    Likes Received:
    dynamic scaling of transfer windows/buffers? Not sure linux does that, but on win that would have been a potential explanation ;)
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