You're thinking too complicated... it's really an invalid parameter. The trouble is the attempt to pass 10000000 to the logicalSize parameter (which is arguably a bit underspecified and there could be a better error message): it's impossible to create an image of this logical size in any of the image formats I'm aware of, simply because they have a minimum storage unit of 512 bytes. 10000000 (10MB by the SI definition) isn't a multiple of 512.
VBoxManage createhd can't do this either (note that most people use the --size option to specify the image size in MiBytes, which means that this issue is hidden, but there's the --sizebytes option)... Klaus On 10.06.2014 23:30, Maxime Dor wrote: > What values do you get if you enumerate ISystemProperties::mediumFormats > <https://www.virtualbox.org/sdkref/interface_i_system_properties.html#a3fddf22466361f98b6dc9fc4458d1049>? > > *From:*Karoline Haus [mailto:[email protected]] > *Sent:* 10 June 2014 13:17 > *To:* Maxime Dor > *Cc:* [email protected] > *Subject:* Re: [vbox-dev] createBaseStorage() fails with > VERR_INVALID_PARAMETER > > I have now figured that the problem seems to be the format itself. If I > used 'vmdk' instead of 'vdi' then it works. How is that possible, if > using VBoxManage I can create VDI images? Do I have to pass a different > set of parameters when using VDI? Or is a different type of image ( > MediumVariant > <https://www.virtualbox.org/sdkref/_virtual_box_8idl.html#adedcbf1a6e5e35fe7a0ca0c4b3447154>) > required when doing createBaseStorage() with the vdi format? Anyone got > any pointers? > > Maxime Dor <[email protected] <mailto:[email protected]>> > schrieb am 8:35 Sonntag, 8.Juni 2014: > > Then I don't know :( no such exception is documented (even tho its > significance is clear) and I don't know which parameter is wrong or invalid. > > Hopefully the devs will have an answer. > > On 6 June 2014 17:01, Karoline Haus <[email protected] > <mailto:[email protected]>> wrote: > > Yes it is an array. The type of size is int as there is no long type > in Python. > > Maxime Dor <[email protected] > <mailto:[email protected]>> schrieb am 15:07 Freitag, 6.Juni > 2014: > > Never wrote python, but it looks good. Can you simply confirm > that self.vboxMgr.constants.MediumVariant_Standard is given in an > array? (it looks like but not sure). > > Else, the size needs to be a long, if such type exists in Python. > > On 6 June 2014 11:28, Karoline Haus <[email protected] > <mailto:[email protected]>> wrote: > > This is the very simple code that fails over and over again and > I don't know how to fix it: > > format='vdi' > > diskImagePath='/home/user/test.vdi' > > size=10000000 > > hdd = self.vboxMgr.vbox.createHardDisk(format, diskImagePath) > try: > progress = hdd.createBaseStorage(size, > > (self.vboxMgr.constants. > > MediumVariant_Standard,)) > > ... > > This code throws an exception and tells me error code > VERR_INVALID_PARAMETER as mentioned above. Any idea how to fix this? > > It fails in createBaseStorage(). > > Thanks! > > Maxime Dor <[email protected] > <mailto:[email protected]>> schrieb am 8:58 Freitag, > 6.Juni 2014: > > Provide the part of your code that fails please, else it's a bit > hard to give you pointers. > > On 5 June 2014 16:25, Karoline Haus <[email protected] > <mailto:[email protected]>> wrote: > > Hi I'm trying to create a virtual hard drive using the > Python API. > > I can successully create the IMedium object using > IVirtualBox::createHardDisk() but then when I try to call > createBaseStorage() on that object, I can an error saying > "Error in module Medium (VERR_INVALID_PARAMETER)" but I do > not get any further details on what the problem is. > > According to the SDK documentation, the only error for this > function should be if the medium format is not supported by > my system ("The variant of storage creation operation is not > supported."), but I am just trying to create a VDI disk, and > when I list the HDD backends using VBoxManage, it is > definitely supported. The path I'm trying to create the > virtual disk under is also accessible and writable. > > What else can the problem be? I do not seem to be able to > dig deeper into this. I'm using the /MediumVariant_Standard/ > variant, so there is nothing special about this either. > > Any pointers would be really appreciated. > _______________________________________________ vbox-dev mailing list [email protected] https://www.virtualbox.org/mailman/listinfo/vbox-dev
