Re: [libvirt-users] username and passwd after create VM from XML dump

On 08/06/2014 12:10 PM, Yuanzhen Gu wrote: > Just one more question to make me clear in this point, so if I install > an application in the guest, and make a dmup XML, then create a new > guest using that configured dump XML file, the new guest should also have > that application installed? and the username and password of the new guest > should be the same as the previous guest? thanks a lot! dumpxml is only half a guest. A guest consists of the hardware it is running on (dumpxml) and the contents of the disks (storage volumes). To create a clone, you need to copy and modify both the dumpxml domain description, AND do a clone (or share a common base file, using qcow2 overlays) of the disk elements (where part of your xml edits is pointing to the just-cloned storage). Furthermore, if you expect both the original and the new guest to ever run in parallel, it is a very wise idea to do other changes to the disk contents (which is why I pointed you to libguestfs' virt-sysprep). For example, if you forget to nuke the guest's random number seed, then both the original and the guest will be using the same random number stream when they first boot, which is a security hole waiting to happen because random streams are not supposed to be predictable.

-- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org