Virtualbox could not map shared folder from CentOS host

sokha · 06-26-2010, 08:20 PM

I have Virtualbox installed in CentOS 5.5 and an Ubuntu as Guest OS. I am having a problem of sharing host folder to guest.

I have done these already:
1. (HOST): VBoxManage sharedfolder add "ubuntu_vpn" -name "media" -hostpath "/home/username/media"
2. (GUEST): VBoxLinuxAdditions is already installed in Guest OS successfully
3. Reboot Guest OS
4. I try to use both commands:

Code:

sudo mount -t vboxsf media /home/username/shared

and

Code:

sudo mount.vboxsf media /home/username/shared

Those two commands give the same error:

Code:

mounting failed with the error: Protocol error

Any solution?

mzsade · 06-27-2010, 01:00 AM

https://help.ubuntu.com/community/Vi.../SharedFolders

sokha · 06-27-2010, 02:07 AM

Quote:

Originally Posted by mzsade

https://help.ubuntu.com/community/Vi.../SharedFolders

I followed that but got the same error message as shown in troubleshooting.

mzsade · 06-27-2010, 03:17 AM

If you have already added your username to the vboxusers group, via "sudo adduser <yourusername> vboxusers", then i am lost. Very sorry to have removed your question from the zero replies list without resolving it.

sokha · 06-28-2010, 12:09 AM

Quote:

Originally Posted by mzsade

If you have already added your username to the vboxusers group, via "sudo adduser <yourusername> vboxusers", then i am lost. Very sorry to have removed your question from the zero replies list without resolving it.

Yes, the username I am running those command is already in vboxusers

Code:

/usr/sbin/usermod -a -G vboxusers username

mzsade · 06-28-2010, 03:03 AM

Again i apologize, i suggest you go directly to the source, virtualbox.org, register and login, then register with their forum and post the question there. One of my tricky issues,(nothing similar was resolved there). All the better if someone else here is able to solve it here.

sokha · 06-28-2010, 04:37 AM

Quote:

Originally Posted by mzsade

Again i apologize, i suggest you go directly to the source, virtualbox.org, register and login, then register with their forum and post the question there. One of my tricky issues,(nothing similar was resolved there). All the better if someone else here is able to solve it here.

Thanks anyway, I just registered and post the problem there.

rsciw · 06-29-2010, 05:00 AM

I came across this too at some point, when I set up shared directories on a CentOS guest with Ubuntu host.

added this to the /etc/rc.local in the guest and don't have a problem since:

Code:

mount.vboxsf -o uid=500 -o gid=500 <sharename> <sharedirectory>

where uid and gid are the IDs of the user who owns the share on the guest.

did you also run

Code:

/etc/init.d/vboxdrv setup

on the host?

iirc that was necessary too

douglasawh · 07-13-2010, 02:41 PM

Quote:

Originally Posted by rsciw

I came across this too at some point, when I set up shared directories on a CentOS guest with Ubuntu host.

added this to the /etc/rc.local in the guest and don't have a problem since:

Code:

mount.vboxsf -o uid=500 -o gid=500 <sharename> <sharedirectory>

where uid and gid are the IDs of the user who owns the share on the guest.

did you also run

Code:

/etc/init.d/vboxdrv setup

on the host?

iirc that was necessary too

Did that. Fedora host and Ubuntu guest. Any other suggestions?