On 1/19/23 11:25, Vasily Ulyanov wrote: > Hi All, > > I am now trying to run our downstream KubeVirt build with a recent libvirt 9.0.0 > and I see a problem that libvirt refuses to start a VM if it is configured to > use a pre-created tap device: > > virError(Code=55, Domain=0, Message='Requested operation is not valid: The > tap0 interface already exists') > > After looking at the git history I found the bellow commit [1] which explicitly > forbids such a usecase. This basically breaks KubeVirt since libvirt there runs > unprivileged and can only use the existing tap's. > > I haven't yet look deeper into the original issue linked to the commit. Just > wanted to raise this here first. Perhaps someone can provide feedback on that. > What about some alternative approach instead? Or maybe it was discussed already... > > BTW, I tested with the reverted commit and it was successful. > > [1] > https://gitlab.com/libvirt/libvirt/-/commit/a2ae3d299cf9c5ada8aa42ec4271748eb479dc27 > Thanks for the report. I've posted patches here: https://listman.redhat.com/archives/libvir-list/2023-January/237281.html Michal
