Public bug reported:
When using libvirt to start a kvm virtual machine the virtual machine
fails with permission denied on disk:
% virsh start my-workstation
error: Failed to start domain my-workstation
error: internal error process exited while connecting to monitor: kvm: -drive
file=/home/ressu/VMs/HardDisks/My
workstation.qcow,if=none,id=drive-virtio-disk0,format=qcow2: could not open
disk image /home/ressu/VMs/HardDisks/My workstation.qcow: Permission denied
The disk image get chowned by libvirt to the correct user (libvirt-qemu)
according to a strace.
Directory permissions have been altered so that anyone can write to the
directory to eliminate the possibility of a failing temp file.
[ressu@patience:~/VMs/HardDisks]
% ls -alF
total 51227700
drwxrwxrwx 2 ressu ressu 4096 tammi 26 11:23 ./
drwxr-xr-x 3 ressu ressu 4096 marra 3 2010 ../
-rwxrwxrwx 1 root root 20708261888 syys 17 16:50 My workstation.qcow*
The bug has been reproduced with 12.04 (last updated today), libvirt version
being 0.9.8-2ubuntu9
** Affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/932590
Title:
libvirt fails to start a KVM virtual machine: could not open disk
image, Permission denied
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