"J. Roeleveld" <jo...@antarean.org> writes:
> [...] > If disk-space is considered too expensive, you could even have every VM use > the same base image. And have them store only the differences of the disk. > eg: > 1) Create a VM > 2) Snapshot the disk (with the VM shutdown) > 3) create a new VM based on the snapshot > > Repeat 2 and 3 for as many clones you want. > > Most installs don't change that much when dealing with standardized desktops. How does that work? IIUC, when you created a snapshot, any changes you make to the snapshotted (or how that is called) file system are being referenced by the snapshot which you can either destroy or abandon. When you destroy it, the changes you made are being applied to the file system you snapshotted (because someone decided to use a very misleading terminology), and when you abandon it, the changes are thrown away and you end up with the file system as it was before the snapshot was created. In any case, you do not get multiple versions (which only reference the changes made) of the file system you snapshotted but only one current version. Do you need to use a special file system or something which provides this kind of multiple copies when you make snapshots?
