'man virt-install' has this: Fedora/Red Hat Based http://download.fedoraproject.org/pub/fedora/linux/releases/18/Fedora/x86_64/os this URL scheme doesn't work for F21; the Fedora/ tree doesn't exist any more. The 'canonical' location for install images and similar for F21 is the Server/ tree: http://download.fedoraproject.org/pub/fedora/linux/releases/21/Server/x86_64/os the Server/ tree doesn't exist prior to F21, obviously, so unfortunately the docs might have to list both locations :/ The mirror manager repo "fedora-install-XX" is consistent - you can use "fedora-install-20" or "fedora-install-21" with mirrormanager and get redirected to the correct source of 'install'-type images in both cases - but I tested and it doesn't look like you can use mirror manager URLs for retrieving the installer image, the dracut bits don't handle it.
Thanks, fixed upstream: commit 2f2ab1438f87bfdd4a40ed60048cc4532b34e857 Author: Cole Robinson <crobinso> Date: Thu Mar 26 16:18:25 2015 -0400 man: Use F21 URL for --location example (bz 1172818)
virt-manager-1.1.0-6.git8ca8490c.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/virt-manager-1.1.0-6.git8ca8490c.fc22
Package virt-manager-1.1.0-6.git8ca8490c.fc22: * should fix your issue, * was pushed to the Fedora 22 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing virt-manager-1.1.0-6.git8ca8490c.fc22' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-4975/virt-manager-1.1.0-6.git8ca8490c.fc22 then log in and leave karma (feedback).
virt-manager-1.1.0-6.git8ca8490c.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.