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18.12. 常​​​​​​​见​​​​​​​的​​​​​​​故​​​​​​​障​​​​​​​解​​​​​​​除​​​​​​​

当​​​​​​​你​​​​​​​试​​​​​​​图​​​​​​​启​​​​​​​动​​​​​​​ xend 服​​​​​​​务​​​​​​​时​​​​​​​，什​​​​​​​么​​​​​​​也​​​​​​​没​​​​​​​有​​​​​​​发​​​​​​​生​​​​​​​。​​​​​​​键​​​​​​​入​​​​​​​ xm list1 后​​​​​​​可​​​​​​​以​​​​​​​看​​​​​​​到​​​​​​​下​​​​​​​面​​​​​​​的​​​​​​​输​​​​​​​出​​​​​​​： 
Error: Error connecting to xend: Connection refused. Is xend running?
当​​​​​​​你​​​​​​​尝​​​​​​​试​​​​​​​手​​​​​​​工​​​​​​​运​​​​​​​行​​​​​​​ xend start 时​​​​​​​，发​​​​​​​现​​​​​​​更​​​​​​​多​​​​​​​的​​​​​​​错​​​​​​​误​​​​​​​： 
Error: Could not obtain handle on privileged command interfaces (2 = No such file or directory)
Traceback (most recent call last:)

File "/usr/sbin/xend/", line 33 in ?

from xen.xend.server. import SrvDaemon

File "/usr/lib/python2.4/site-packages/xen/xend/server/SrvDaemon.py" , line 26 in ?
		
from xen.xend import XendDomain

File "/usr//lib/python2.4/site-packages/xen/xend/XendDomain.py" , line 33, in ?

from xen.xend import XendDomainInfo
		
File "/usr/lib/python2.4/site-packages/xen/xend/image.py" , line37, in ?

import images

File "/usr/lib/python2.4/site-packages/xen/xend/image.py" , line30, in ?

xc = xen.lowlevel.xc.xc ()

RuntimeError: (2, 'No such file or directory' )
最​​​​​​​可​​​​​​​能​​​​​​​的​​​​​​​原​​​​​​​因​​​​​​​就​​​​​​​是​​​​​​​你​​​​​​​把​​​​​​​主​​​​​​​机​​​​​​​启​​​​​​​动​​​​​​​到​​​​​​​了​​​​​​​非​​​​​​​ xen-hypervisor 的​​​​​​​内​​​​​​​核​​​​​​​。​​​​​​​要​​​​​​​解​​​​​​​决​​​​​​​这​​​​​​​个​​​​​​​问​​​​​​​题​​​​​​​，你​​​​​​​必​​​​​​​须​​​​​​​在​​​​​​​引​​​​​​​导​​​​​​​时​​​​​​​选​​​​​​​择​​​​​​​ xen-hypervisor 内​​​​​​​核​​​​​​​（或​​​​​​​在​​​​​​​ grub.conf 文​​​​​​​件​​​​​​​里​​​​​​​把​​​​​​​ xen-hypervisor 内​​​​​​​核​​​​​​​设​​​​​​​置​​​​​​​为​​​​​​​缺​​​​​​​省​​​​​​​选​​​​​​​项​​​​​​​）。​​​​​​​