With FC6 test1, on x86_64, with selinux enabled, xend fails to start at boot. Seeing these selinux errors repeated every time xend start/status runs: --- avc: denied { read write } for pid=2668 comm="xend" name="0" dev=devpts ino=2 scontext=system_u:system_r:xend_t:s0 tcontext=system_u:object_r:initrc_devpts_t:s0 tclass=chr_file avc: denied { read write } for pid=2668 comm="xend" name="0" dev=devpts ino=2 scontext=system_u:system_r:xend_t:s0 tcontext=system_u:object_r:initrc_devpts_t:s0 tclass=chr_file avc: denied { read write } for pid=2668 comm="xend" name="0" dev=devpts ino=2 scontext=system_u:system_r:xend_t:s0 tcontext=system_u:object_r:initrc_devpts_t:s0 tclass=chr_file avc: denied { append } for pid=2668 comm="python" name="xend.log" dev=dm-0 ino=27690085 scontext=system_u:system_r:xend_t:s0 tcontext=root:object_r:var_log_t:s0 tclass=file avc: denied { search } for pid=2668 comm="python" name="tmp" dev=dm-0 ino=26705921 scontext=system_u:system_r:xend_t:s0 tcontext=system_u:object_r:tmp_t:s0 tclass=dir avc: denied { search } for pid=2668 comm="python" name="tmp" dev=dm-0 ino=27688964 scontext=system_u:system_r:xend_t:s0 tcontext=system_u:object_r:tmp_t:s0 tclass=dir avc: denied { read } for pid=2668 comm="python" name="tmp" dev=dm-0 ino=7635012 scontext=system_u:system_r:xend_t:s0 tcontext=system_u:object_r:usr_t:s0 tclass=lnk_file avc: denied { write } for pid=2668 comm="python" name="/" dev=dm-0 ino=2 scontext=system_u:system_r:xend_t:s0 tcontext=system_u:object_r:root_t:s0 tclass=dir --- When trying to debug it by starting it manually (either with service xend start, /etc/rc.d/init.d/xend start or /usr/sbin/xend start) it eventually works after a while ... not sure what actually causes it to start working, though.
Note that currently I can't get xen+SELinux to work on x86-64 anyway due to BZ#194292 *** This bug has been marked as a duplicate of 192813 ***