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It seems that forking._cleaup() calls Popen.poll() which tests for self.returncode, but then self.pid may be collected by another .poll() and refer to a nonexistent pid.
MainThread::ERROR::2011-03-14 18:02:48,144::sp::548::Storage.StoragePool::(reconnect) RECONNECT: Failed: 1cceaba4-2aec-45fe-b4f7-eac35299698d
Traceback (most recent call last):
File "/usr/share/vdsm/storage/sp.py", line 546, in reconnect
return self.connect(hostId, scsiKey, msdUUID, masterVersion)
File "/usr/share/vdsm/storage/sp.py", line 434, in connect
SDF.refresh()
File "/usr/share/vdsm/storage/sdf.py", line 132, in refresh
cls.sdc.refresh()
File "/usr/share/vdsm/storage/sdc.py", line 114, in refresh
self._refreshDomains()
File "/usr/share/vdsm/storage/misc.py", line 1028, in helper
return sm(*args, kwargs)
File "/usr/share/vdsm/storage/misc.py", line 1015, in call
self.lastResult = self.func(*args, kwargs)
File "/usr/share/vdsm/storage/sdc.py", line 140, in _refreshDomains
nfsSD.getFileStorageDomainList() +
File "/usr/share/vdsm/storage/nfsSD.py", line 146, in getFileStorageDomainList
dl.append(NfsStorageDomain?(os.path.basename(os.path.dirname(f))))
File "/usr/share/vdsm/storage/fileSD.py", line 87, in init
if not oop.fileUtils.pathExists(self.metafile):
File "/usr/share/vdsm/storage/processPool.py", line 35, in wrapper
return self.runExternally(func, *args, kwds)
File "/usr/share/vdsm/storage/processPool.py", line 54, in runExternally
helper = Helper()
File "/usr/share/vdsm/storage/processPool.py", line 102, in init
self.proc.start()
File "/usr/lib64/python2.6/multiprocessing/process.py", line 99, in start
_cleanup()
File "/usr/lib64/python2.6/multiprocessing/process.py", line 53, in _cleanup
if p._popen.poll() is not None:
File "/usr/lib64/python2.6/multiprocessing/forking.py", line 106, in poll
pid, sts = os.waitpid(self.pid, flag)
OSError: [Errno 10] No child processes
Comment 2RHEL Program Management
2011-04-04 02:13:13 UTC
Since RHEL 6.1 External Beta has begun, and this bug remains
unresolved, it has been rejected as it is not proposed as
exception or blocker.
Red Hat invites you to ask your support representative to
propose this request, if appropriate and relevant, in the
next release of Red Hat Enterprise Linux.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHBA-2011-1564.html
It seems that forking._cleaup() calls Popen.poll() which tests for self.returncode, but then self.pid may be collected by another .poll() and refer to a nonexistent pid. MainThread::ERROR::2011-03-14 18:02:48,144::sp::548::Storage.StoragePool::(reconnect) RECONNECT: Failed: 1cceaba4-2aec-45fe-b4f7-eac35299698d Traceback (most recent call last): File "/usr/share/vdsm/storage/sp.py", line 546, in reconnect return self.connect(hostId, scsiKey, msdUUID, masterVersion) File "/usr/share/vdsm/storage/sp.py", line 434, in connect SDF.refresh() File "/usr/share/vdsm/storage/sdf.py", line 132, in refresh cls.sdc.refresh() File "/usr/share/vdsm/storage/sdc.py", line 114, in refresh self._refreshDomains() File "/usr/share/vdsm/storage/misc.py", line 1028, in helper return sm(*args, kwargs) File "/usr/share/vdsm/storage/misc.py", line 1015, in call self.lastResult = self.func(*args, kwargs) File "/usr/share/vdsm/storage/sdc.py", line 140, in _refreshDomains nfsSD.getFileStorageDomainList() + File "/usr/share/vdsm/storage/nfsSD.py", line 146, in getFileStorageDomainList dl.append(NfsStorageDomain?(os.path.basename(os.path.dirname(f)))) File "/usr/share/vdsm/storage/fileSD.py", line 87, in init if not oop.fileUtils.pathExists(self.metafile): File "/usr/share/vdsm/storage/processPool.py", line 35, in wrapper return self.runExternally(func, *args, kwds) File "/usr/share/vdsm/storage/processPool.py", line 54, in runExternally helper = Helper() File "/usr/share/vdsm/storage/processPool.py", line 102, in init self.proc.start() File "/usr/lib64/python2.6/multiprocessing/process.py", line 99, in start _cleanup() File "/usr/lib64/python2.6/multiprocessing/process.py", line 53, in _cleanup if p._popen.poll() is not None: File "/usr/lib64/python2.6/multiprocessing/forking.py", line 106, in poll pid, sts = os.waitpid(self.pid, flag) OSError: [Errno 10] No child processes