KVM 无法访问 /var/lib/libvirt/images 之外的 iso o 原始图像

Question

当我尝试从 libvirt（从命令行或使用 virt-manager 到本地 qemu-kvm）启动虚拟机时，我正在使用 Linux Mint Debian Edition（Up. 8）我在使用未加载的映像时收到此错误在默认数据存储中：

如果我将相同的图像（在本例中为 .iso 文件）复制到 /var/lib/libvirt/images 文件夹，它就可以工作。

我尝试将其 chown 和 chmod 更改为每个可能的所有者和模式，但它不起作用。

SELinux 在这个发行版中没有到位，所以我不知道重点在哪里，在日志中我只能看到权限被拒绝，我很困。

Impossibile completare l'installazione: 'internal error: process exited while connecting to monitor: qemu-system-x86_64: -drive file=/home/penzo/Scaricati/elementaryos-stable-amd64.20130810.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw: could not open disk image /home/penzo/Scaricati/elementaryos-stable-amd64.20130810.iso: Could not open '/home/penzo/Scaricati/elementaryos-stable-amd64.20130810.iso': Permission denied
'

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 96, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/create.py", line 1949, in do_install
    guest.start_install(False, meter=meter)
  File "/usr/lib/pymodules/python2.7/virtinst/Guest.py", line 1249, in start_install
    noboot)
  File "/usr/lib/pymodules/python2.7/virtinst/Guest.py", line 1317, in _create_guest
    dom = self.conn.createLinux(start_xml or final_xml, 0)
  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 2897, in createLinux
    if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self)
libvirtError: internal error: process exited while connecting to monitor: qemu-system-x86_64: -drive file=/home/penzo/Scaricati/elementaryos-stable-amd64.20130810.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw: could not open disk image /home/penzo/Scaricati/elementaryos-stable-amd64.20130810.iso: Could not open '/home/penzo/Scaricati/elementaryos-stable-amd64.20130810.iso': Permission denied

任何线索？

Answer 1

用户libvirt-qemu必须能够访问目录/home/penzo/Scaricati/，而不仅仅是其中的文件。