[CentOS] kvm & permission denied

Gregory P. Ennis PoMec at PoMec.Net
Sun Jul 15 14:16:23 UTC 2018


Everyone,

I am trying to install KVM on a desktop unit as a lab project with the
hope of being able to use kvm on one of our office servers after I
learn how.  So far I am very low on the learning curve.

I have used the guide to make the installation :

https://www.linuxtechi.com/install-kvm-hypervisor-on-centos-7-and-rhel-
7/

The installation seemed to go well, but when I tried to add Fedora 27
with virt-manager I have continued to get file permission errors.  I
have tried turning selinux off, and making sure the directory
permissions are 777 and the file permissions are 666, but have not been
able to succeed.  A google search demonstrates others have had this
problem, and I have tried many of the fixes that have been recorded,
but no success.

I am running : CentOS Linux release 7.5.1804 (Core)  with 3.10.0-
862.6.3.el7.x86_64 kernel 

CPU : AMD FX(tm)-6300 Six-Core Processor

I am using the root account through a konsole interface to activate
virt-manager.

The Error Message from virt-manager is :
Unable to complete install: 'internal error: process exited while
connecting to monitor: 2018-07-15T13:55:37.836269Z qemu-kvm: -drive
file=/home/greg/Downloads/Fedora/f27/Fedora-Workstation-Live-x86_64-27-
1.6.iso,format=raw,if=none,id=drive-virtio-disk0: Could not open
'/home/greg/Downloads/Fedora/f27/Fedora-Workstation-Live-x86_64-27-
1.6.iso': Permission denied'

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 89, in
cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/create.py", line 2545, in
_do_async_install
    guest.start_install(meter=meter)
  File "/usr/share/virt-manager/virtinst/guest.py", line 498, in
start_install
    doboot, transient)
  File "/usr/share/virt-manager/virtinst/guest.py", line 434, in
_create_guest
    domain = self.conn.createXML(install_xml or final_xml, 0)
  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3658, in
createXML
    if ret is None:raise libvirtError('virDomainCreateXML() failed',
conn=self)
libvirtError: internal error: process exited while connecting to
monitor: 2018-07-15T13:55:37.836269Z qemu-kvm: -drive
file=/home/greg/Downloads/Fedora/f27/Fedora-Workstation-Live-x86_64-27-
1.6.iso,format=raw,if=none,id=drive-virtio-disk0: Could not open
'/home/greg/Downloads/Fedora/f27/Fedora-Workstation-Live-x86_64-27-
1.6.iso': Permission denied



The /var/log/message entries associated with the above error message is
 the following :

Jul 15 08:55:37 HmGp libvirtd: 2018-07-15 13:55:37.922+0000: 1643:
error : qemuMonitorOpenUnix:385 : failed to connect to monitor socket:
No such process

Jul 15 08:55:37 HmGp libvirtd: 2018-07-15 13:55:37.927+0000: 1643:
error : qemuProcessReportLogError:1912 : internal error: process exited
while connecting to monitor: 2018-07-15T13:55:37.836269Z qemu-kvm:
-drive file=/home/greg/Downloads/Fedora/f27/Fedora-Workstation-Live-
x86_64-27-1.6.iso,format=raw,if=none,id=drive-virtio-disk0: Could not
open '/home/greg/Downloads/Fedora/f27/Fedora-Workstation-Live-x86_64-
27-1.6.iso': Permission denied

Thanks ahead of time for your help.

Greg Ennis





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