On 2018-05-28 20:38, Kevin Wolf wrote: > Am 28.05.2018 um 20:30 hat Richard W.M. Jones geschrieben: >> On Mon, May 28, 2018 at 08:10:32PM +0200, Max Reitz wrote: >>> As someone who is just naive and doesn't see the big picture, I don't >>> see what's wrong with using a tar file that contains the image and >>> additional data. >> >> FWIW an OVA file is exactly this: an uncompressed tar file containing >> disk image(s) and metadata. > > If we combine VM configuration and the disk image this way, I would > still want to directly use that combined thing without having to extract > its components first. > > Just accessing the image file within a tar archive is possible and we > could write a block driver for that (I actually think we should do > this), but it restricts you because certain operations like resizing > aren't really possible in tar. Unfortunately, resizing is a really > common operation for non-raw image formats. > > And if I think of a file format that can contain several different > things that can be individually resized etc., I end up with qcow2 in the > simple case or a full file system in the more complex case.
Well, you end up with VMDK. Max
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