VM hangs when writing large files to shared folder

[eng3]

I am running Windows 10 with a debian guest. I have shared folders setup so I can access windows folders from the guest.
Whenever I try to create/write a large file (ie >10GB), the VM entire will hang.

[mpack]

Try using a proper network share, not a GA shared folder.

[eng3]

Yes, I've tried mounting a samba share. It does work, but it seems to be a workaround.
It also seems less reliable as any hiccup in network, etc causes the mount to go stale.
The performance seems to be worse.

The VM is setup with a bridged network so I think everything is going out thru the NIC and router.
Is there a way to setup a separate network to connect to the share locally without going thru the network adapter and router?

[scottgus1]

See Virtualbox Networks: In Pictures. You'll probably settle on Host-Only.

Guest Additions Shared Folders are only for file transfer between host and guest. Your setup was probably asking something GASF's can't do.

[eng3]

Yes, that is exactly what I was doing. Transferring files between guest and host. The VM hangs when I attempt to transfer large files.

Use of a network share to transfer files between guest and host, as suggested by you, does not hang the VM but his performance issues.

Host-Only does not work because I need to be able to access the VM over the network from outside the host. That is why I am using bridged.

The setup does not seem too unusual. It seems like a limitation in GASF's ability to handle large files.

[BillG]

The setup does not seem too unusual. It seems like a limitation in GASF's ability to handle large files.

Yes, that is correct. It was not designed to handle large files. That is why it was suggested that you use a network share instead.

[scottgus1]

Use of a network share to transfer files between guest and host, as suggested by you, does not hang the VM but his performance issues.

Such has never been seen by me to be caused by Virtualbox Bridged, and I have transferred hundreds of GB, in 35-50GB files out of guests at times with no issues. Virtualbox Bridged to Ethernet is solid, as long as the Ethernet is solid.

I did once have issues with unstable network on a Virtualbox host. The problem was out-of-date host network card drivers. Once these were fixed, the network was stable as the Rock of Gibraltar.

Investigate your physical network, or consider using unbuffered copy mode in your file copies (XCOPY /j or Linux equivalent).

Host-Only does not work because I need to be able to access the VM over the network from outside the host

You can have two network cards in a guest. If you cannot get your physical network to run smooth, set the first to NAT for internet access and the second to Host-Only for guest-host access.