We need to backport this commit: commit 269d39afe5c59ecb3d3d64dba52f8cfa8d63d197 Author: Guido Günther <agx> Date: Sun Aug 23 22:03:54 2015 +0200 storage: only run safezero if allocation is > 0 While a zero allocation in safezero should be fine it isn't when we use posix_fallocate which returns EINVAL on a zero allocation. While we could skip the zero allocation in safezero_posix_fallocate it's an optimization to do it for all allocations. This fixes vm installation via virtinst for me which otherwise aborts like: Starting install... Retrieving file linux... | 5.9 MB 00:01 ... Retrieving file initrd.gz... | 29 MB 00:07 ... ERROR Couldn't create storage volume 'virtinst-linux.sBgds4': 'cannot fill file '/var/lib/libvirt/boot/virtinst-linux.sBgds4': Invalid argument' The error was introduced by e30297b0 as spotted by Chunyan Liu
libvirt-1.2.18.1-1.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2015-16416
libvirt-1.2.18.1-1.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with $ su -c 'dnf --enablerepo=updates-testing update libvirt' You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2015-16416
libvirt-1.2.18.1-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.