SELinux is preventing /usr/bin/python from 'read' accesses on the blk_file drbd0.

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

If you believe that python should be allowed read access on the drbd0 blk_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 xend /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:xend_t:s0
Target Context                system_u:object_r:fixed_disk_device_t:s0
Target Objects                drbd0 [ blk_file ]
Source                        xend
Source Path                   /usr/bin/python
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           python-2.7.1-7.fc15
Target RPM Packages           
Policy RPM                    selinux-policy-3.9.16-38.fc15
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 2.6.40.4-5.fc15.i686.PAE #1 SMP Tue Aug
                              30 14:43:52 UTC 2011 i686 i686
Alert Count                   3
First Seen                    Wed 07 Sep 2011 11:24:58 PM CDT
Last Seen                     Wed 07 Sep 2011 11:31:22 PM CDT
Local ID                      239dff29-105f-40a2-9dd3-0d1f98a4e24d

Raw Audit Messages
type=AVC msg=audit(1315456282.277:125): avc:  denied  { read } for  pid=2891 comm="xend" name="drbd0" dev=devtmpfs ino=18724 scontext=system_u:system_r:xend_t:s0 tcontext=system_u:object_r:fixed_disk_device_t:s0 tclass=blk_file


type=SYSCALL msg=audit(1315456282.277:125): arch=i386 syscall=access success=no exit=EACCES a0=b5314ce0 a1=4 a2=47b126cc a3=b67046c0 items=0 ppid=1 pid=2891 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=xend exe=/usr/bin/python subj=system_u:system_r:xend_t:s0 key=(null)

Hash: xend,xend_t,fixed_disk_device_t,blk_file,read

audit2allow

#============= xend_t ==============
allow xend_t fixed_disk_device_t:blk_file read;

audit2allow -R

#============= xend_t ==============
allow xend_t fixed_disk_device_t:blk_file read;