Description of problem:
Happens at every boot, whether or not Xen is in use. KVM and Xen are both installed, but the problem occurs even when the Xen hypervisor is not running.
SELinux is preventing /usr/bin/touch from 'create' accesses on the file libvirt-guests.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that touch should be allowed create access on the libvirt-guests file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep touch /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:init_t:s0
Target Context                system_u:object_r:var_lock_t:s0
Target Objects                libvirt-guests [ file ]
Source                        touch
Source Path                   /usr/bin/touch
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    <Unknown>
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.17.4-301.fc21.x86_64 #1 SMP Thu
                              Nov 27 19:09:10 UTC 2014 x86_64 x86_64
Alert Count                   1
First Seen                    2014-12-09 20:47:53 EST
Last Seen                     2014-12-09 20:47:53 EST
Local ID                      1df37af1-70b0-4245-b093-ae05c16b0cb2

Raw Audit Messages
type=AVC msg=audit(1418176073.927:80): avc:  denied  { create } for  pid=782 comm="touch" name="libvirt-guests" scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:var_lock_t:s0 tclass=file permissive=0


type=SYSCALL msg=audit(1418176073.927:80): arch=x86_64 syscall=open success=no exit=EACCES a0=7fff40365f4b a1=941 a2=1b6 a3=691 items=0 ppid=778 pid=782 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=touch exe=/usr/bin/touch subj=system_u:system_r:init_t:s0 key=(null)

Hash: touch,init_t,var_lock_t,file,create

Additional info:
reporter:       libreport-2.3.0
hashmarkername: setroubleshoot
kernel:         3.17.4-301.fc21.x86_64
type:           libreport

Potential duplicate: bug 1065693