Status: Accepted
Owner: dimitris...@gmail.com
Labels: Type-Defect Priority-High Component-storage

New issue 1199 by dimitris...@gmail.com: Cannot override --prealloc-wipe-disks at instance level
https://code.google.com/p/ganeti/issues/detail?id=1199

If --prealloc-wipe-disks is set at cluster level we cannot override
it at instance level during instance creation.

A side effect is the following:

- Create an ext based VM that has only userspace access support
  (kvm_path = None see commit c4f1bff)
- prealloc-wipe-disks is set
- Ganeti will end up dd if=/dev/zero of=/None
- Might run out of space in rootfs

Besides that, if the created disk is a clone of a snapshot (some
ext providers support this feature), if --prealloc-wipe-disks is
set it will wipe the disk's data!

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