I have a very strange problem with libvirt. I work on some machines with libvirt (Debian/ Arch Linux) and libvirt set the ownership of images file automatically to the qemu user / group for example on Arch Linux to nobody:kvm.
So when I copy an image file with root and use I then with qemu, libvirt change the owner/ group to nobody:kvm.
But I also compiled libvirt for a machine (gcc 4.9.4 glibc 2.12) and on this machine libvirt did not change the ownership of the image files which results in this error:
libvirtError: internal error: process exited while connecting to monitor: able-ticketing,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vram64_size_mb=0,vgamem_mb=16,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -msg timestamp=on 2016-08-03T18:19:47.494512Z qemu-system-x86_64: -drive file=/data/hdd1/libvirt/images/test.img,format=raw,if=none,id=drive-virtio-disk0: Could not open '/data/hdd1/libvirt/images/test.img': Permission denied
When I set the ownership manually to nobody:kvm everything is fine, but I could not work out why libvirt is unable to set the ownership automatically.
Can anybody give me a hint where I could search further to work out the problem?
My libvirt version is 1.3.3.2 and the settings dynamic_ownership = 1 in /etc/libvirt/qemu.conf is set.
I also created a bug report where I described the problem a little bit more detailed.
https://bugzilla.redhat.com/show_bug.cgi?id=1363864
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