Description of problem: The libvirt qemu driver allows you to create domain names which contain a ',' (comma) character. However qemu will not allow these domains to start up. The reason is that the qemu -name parameter must not contain a comma, since that might be used to delimit other suboptions in future. The error message you get is: error: Failed to start domain , error: internal error process exited while connecting to monitor: Unknown suba rgument to -name Version-Release number of selected component (if applicable): libvirt-0.8.3-2.fc14.x86_64 How reproducible: Always. Steps to Reproduce: 1. Create a qemu or KVM domain where the name contains a comma. 2. 3. Upstream discussion: https://www.redhat.com/archives/libvir-list/2010-October/thread.html#00053
Rather, libvirt should be fixed to borrow ideas from this commit, and use those ideas to properly escape commas in domain names: commit 6e0ff1d4024ca44fab307a89da1968f7b03cd482 Author: Eric Blake <eblake> Date: Fri Mar 9 16:13:30 2012 -0300 qemu: support disk filenames with comma If there is a disk file with a comma in the name, QEmu expects a double comma instead of a single one (e.g., the file "virtual,disk.img" needs to be specified as "virtual,,disk.img" in QEmu's command line). This patch fixes libvirt to work with that feature. Fix RHBZ #801036. Based on an initial patch by Crístian Viana.
Patches sent upstream: http://www.redhat.com/archives/libvir-list/2016-April/msg01594.html
Upstream now, last patch was: commit 7dbbc0ca07f0e8f2f3652afe4a3f7d94940bef1e Author: Cole Robinson <crobinso> Date: Fri Apr 22 18:27:44 2016 -0400 qemu: command: escape commas in chardev socket path After this, a default virt-manager VM will startup with a comma in the VM name: https://bugzilla.redhat.com/show_bug.cgi?id=639926