I use an immutable drive here at the library I work at. I run all the
online catalogs off of one drive. I set the drive itself to immutable...
VBoxManage modifyhd <vdi name> settype immutable
...then attach all the machines to the same drive:
VBoxManage storageattach "<VM name>" \
--storagectl "IDE Controller" \
--port 0 \
--device 0 \
--type hdd \
--medium <vdi name (from above)>
Well, actually I make a copy of my master and then make the copy immutable.
I seem to remember having trouble trying to change an immutable drive even
if I set the type back to normal. Maybe that isn't a problem any more -
it's been a while since I set this up.
Hope this helps -
Library Mark
On Thu, Oct 11, 2012 at 10:31 AM, Marek Salwerowicz <[email protected]> wrote:
> Hi,
>
> I want to run serveral instances of VMs, all using the same VDI disk
> (stored at Read-Only NFS storage) at the same host.
>
> I am using the --mtype multiattach and --mtype immutable types of
> attaching the drive.
>
> However, after creating and running the first machine, I am unable to
> create the second:
>
> /usr/local/bin/VBoxManage -q storageattach Free2 --storagectl SATA
> --port 0 --device 0 --type hdd --medium /mnt/tmp/FreeBSD-9.1-RC2.vdi
> --mtype immutable
> VBoxManage: error: Medium '/mnt/tmp/FreeBSD-9.1-RC2.vdi' is locked for
> reading by another task
> VBoxManage: error: Details: code VBOX_E_INVALID_OBJECT_STATE
> (0x80bb0007), component Medium, interface IMedium, callee nsISupports
> VBoxManage: error: Context: "COMSETTER(Type)(mediumType)" at line 660 of
> file VBoxManageStorageController.cpp
> VBoxManage: error: Failed to set the medium type
>
>
> But if I fristly create eg. 3 VMs, and them run them, everything is OK.
> And - of course, I am unable to add the 4th machine..
>
> Is it expected behaviour ?
>
> Regards,
>
> --
> Marek Salwerowicz
>
>
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