[Xen-users] xend and xen-tool crashed after intensive operation

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Subject:	[Xen-users] xend and xen-tool crashed after intensive operation
From:	서지혜 <bonayaing@xxxxxxxxx>
Date:	Tue, 17 Nov 2009 09:27:56 +0900
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After running intensively (i.e. running >10 guests and migrating them all into other machines etc.) , I wasn't able to

run xen tools as the following messages show.

># xm list
Error: (9, 'Bad file descriptor')
Usage: xm list [options] [Domain, ...]

List information about all/some domains.
-l, --long                     Output all VM details in SXP
--label                        Include security labels
--state=<state>                Select only VMs with the specified state

>vi /var/log/xen/xend.log

[2009-11-17 09:16:57 3087] ERROR (xmlrpclib2:178) Internal error handling xend.domains_with_state
Traceback (most recent call last):
File "/usr/lib64/python2.5/site-packages/xen/util/xmlrpclib2.py", line 131, in _marshaled_dispatch
    response = self._dispatch(method, params)
File "/usr/lib64/python2.5/SimpleXMLRPCServer.py", line 415, in _dispatch
    return func(*params)
File "/usr/lib64/python2.5/site-packages/xen/xend/server/XMLRPCServer.py", line 66, in domains_with_state
    domains = XendDomain.instance().list_sorted(state)
File "/usr/lib64/python2.5/site-packages/xen/xend/XendDomain.py", line 809, in list_sorted
    doms = self.list(state)
File "/usr/lib64/python2.5/site-packages/xen/xend/XendDomain.py", line 779, in list
    self._refresh(refresh_shutdown = False)
File "/usr/lib64/python2.5/site-packages/xen/xend/XendDomain.py", line 396, in _refresh
    txn = xstransact()
File "/usr/lib64/python2.5/site-packages/xen/xend/xenstore/xstransact.py", line 21, in __init__
    self.transaction = xshandle().transaction_start()
Error: (9, 'Bad file descriptor')

So I tried to restart xend daemon but failed to do so.

What is the problem for this? and How can I re-run the guests without rebooting the physical machine?

>service xend start
Starting xen daemons: xenstored blktapctrl xenconsoled xend[FAILED]

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[Xen-users] xend and xen-tool crashed after intensive operation