Faster VM to VM file transfer in Proxmox/KVM

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Klee

Well-Known Member
Jun 2, 2016
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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:

Rand__

Well-Known Member
Mar 6, 2014
6,635
1,768
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dynamic scaling of transfer windows/buffers? Not sure linux does that, but on win that would have been a potential explanation ;)