Am Do, 4. Aug, 2016 um 1:38 schrieb Michal Privoznik
<mpriv...@redhat.com>:
On 04.08.2016 12:12, Jonatan Schlag wrote:
Am Do, 4. Aug, 2016 um 11:32 schrieb Michal Privoznik
<mpriv...@redhat.com>:
On 03.08.2016 21:17, Jonatan Schlag wrote:
Hi,
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
Can you please share the debug logs?
http://wiki.libvirt.org/page/DebugLogs
Also, my initial suspect, before diving any deeper is that
usually, when
users compile libvirt on their own, they forget to set the correct
prefix, therefore libvirt is looking for its config files NOT under
/etc/libvirt but /usr/local/etc/ or whatever.
BTW: is the daemon running under root?
Michal
Hi,
The daemon runs under root.
I uploaded the debug logs to:
http://people.ipfire.org/~jschlag/1363864/1_libvirtd.log
The UID of the user nobody is 99, the GID of the group kvm is 1011.
I added my configure options to the bug report.
Following the log the ownership is changed but why is the file still
owned by root:root?
Right. the file is set ownership.
But the file ist still owned by root:root and so it is not accessable
by qemu as nobody:kvm. In the moment the only possible way is that the
change of the ownership fail, but then there should be an error
message, but there is no error message in the log.
One thing though - libvirt does not
label the whole path, just the file. So maybe you should check whether
nobody:kvm has access into the /data/hdd1/libvirt/images dir (and also
each one in the path).
When is set the ownership manually to nobody:kcm qemu is able to acces
the fail so i think nobody:kvm has access to each folder in the path
What about apparmor? In the bug report you say that selinux is
disabled,
but what about apparmor?
apparmor is also disabled or better it is like se linux not installed.
Michal
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