[CentOS-devel] centos/7 vagrant box: Could not find a controller named 'IDE Controller'

Laurentiu Pancescu

lpancescu at gmail.com
Mon Dec 5 10:29:07 UTC 2016

Hello Marcin,

On 04/12/16 04:52, Marcin Dulak wrote:
> it looks to me that the reason for 'IDE Controller' missing may be actually
> in the box.ovf file,

perhaps I wasn't clear enough in my previous reply: there is no 
guarantee that a Vagrant box will have an IDE controller named "IDE 
Controller", and there never was.  There is no mention of IDE in the 
Vagrant documentation[1], and, if I may quote from the VirtualBox User 
Manual, chapter 5, section 5.1, the last paragraph[2]:

| In general, you should avoid IDE unless it is the only controller
| supported by your guest. Whether you use SATA, SCSI or SAS does not
| make any real difference.

Using SATA has concrete performance benefits, both in disk performance 
on the guest, as well as in CPU and memory usage on the host.  I'm 
already using SATA instead of IDE for my own experimental Vagrant boxes 
for VirtualBox, and switching our official boxes away from IDE is 
something I'm considering for the future.  Such boxes wouldn't have any 
IDE controller at all.

My advice would be to change your Vagrantfile to find the storage 
controller used by the VirtualBox VM (you can write normal Ruby code 
inside a Vagrantfile); if that's too complex, an alternative would be to 
add an additional storage controller with a name of your choosing and 
attach you disk image there.

Best regards,

[1] https://www.vagrantup.com/docs/virtualbox/boxes.html
[2] https://www.virtualbox.org/manual/ch05.html#harddiskcontrollers

More information about the CentOS-devel mailing list