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A VDX6740 crashed and rebooted once while executing "copy support" and once when executing show "running-config".

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Information

 
TitleA VDX6740 crashed and rebooted once while executing "copy support" and once when executing show "running-config".
Symptoms
A VDX6740 crashed and rebooted once while executing "copy support" and once when executing "show running-config".
VDX2# copy support ftp host X.X.X.X
Value for 'user' (<string>): user
Value for 'directory' (<Copy support target directory>): tmp2
Password: *** ******
2019/09/18-10:06:14, [SS-2000], 7347, SW/0 | Active | VCS RID2, INFO, WB-SW-skb, Copy support started on rbridge-id 2.
copy support start
2019/09/18-10:06:15, [SS-1012], 7348, SW/0 | Active, INFO, WB-SW-skb, Copy support upload Operation started.
Saving support information for chassis:VDX2, module:RAS...

Saving support information for chassis:VDX2, module:INFRA...

2019/09/18-10:06:18, [SS-1012], 7349, SW/1 | Standby, INFO, WB-SW-skb, Copy support upload Operation started.
Saving support information for chassis:VDX2, module:INFRA_USER...

********************************************************************************************************
** Crashed in OM/Worker (DcmNs::RunningConfigActionpointWorker::displayConfiguration(confd_user_info*, DcmNs::RunningConfigActionpointWorkerDisplayConfigurationContext*, std::string const&))
********************************************************************************************************

WaveNs::YangDisplayConfigurationContext::evaluateValueOfLocationPath(WaveNs::WaveLocationPath const&, WaveNs::YangElement const*)
WaveNs::WaveXPathExpressionLocationPath::evaluateElement(WaveNs::WaveXPathExpressionEvaluationContext&, WaveNs::YangElement const*) const
WaveNs::WaveXPathExpressionEquals::evaluateElement(WaveNs::WaveXPathExpressionEvaluationContext&, WaveNs::YangElement const*) const
WaveNs::WaveXPathExpressionXPath::evaluateElement(WaveNs::WaveXPathExpressionEvaluationContext&, WaveNs::YangElement const*) const
WaveNs::YangDisplayWhen::evaluateCondition(WaveNs::YangDisplayConfigurationContext*)
WaveNs::YangDataElement::evaluateWhenConditions(WaveNs::YangDisplayConfigurationContext*)
WaveNs::YangContainer::displayConfiguration3(WaveNs::YangDisplayConfigurationContext*, std::vector<WaveNs::YangElement*, std::allocator<WaveNs::YangElement*> >&)
WaveNs::YangElement::displayConfiguration1(WaveNs::YangDisplayConfigurationContext*)
WaveNs::YangUserInterface::printConfiguration(WaveNs::YangDisplayConfigurationContext*)
DcmNs::RunningConfigActionpointWorker::displayConfiguration(confd_user_info*, DcmNs::RunningConfigActionpointWorkerDisplayConfigurationContext*, std::string const&)
DcmNs::RunningConfigActionpointWorker::commandHandler(confd_user_info*, char*, int, char**)
DcmNs::ConfdInterfaceObjectManager::sa_command(confd_user_info*, char*, int, char**)
/usr/confd/lib/libconfd.so [0x7e41eb0]
confd_fd_ready
DcmNs::ConfdNewActionThread::start()
WaveNs::PrismPosixThread::pthreadStartMethod(WaveNs::PrismPosixThread*)
/lib/libpthread.so.0 [0xe09be58]
clone

2019/09/18-10:08:54, [HASM-1200], 7350, SW/0 | Active | FFDC, WARNING, WB-SW-skb, Detected termination of process Dcmd.Linux.powe:3406.
********************************************
* Daemon dcm:3406 died (0)
* Failover/Reboot (died), Wed Sep 18 10:08:55 2019
********************************************
 
VDX2# show running-config
********************************************************************************************************
** Crashed in OM/Worker (DcmNs::RunningConfigActionpointWorker::displayConfiguration(confd_user_info*, DcmNs::RunningConfigActionpointWorkerDisplayConfigurationContext*, std::string const&))
********************************************************************************************************

WaveNs::YangDisplayConfigurationContext::evaluateValueOfLocationPath(WaveNs::WaveLocationPath const&, WaveNs::YangElement const*)
WaveNs::WaveXPathExpressionLocationPath::evaluateElement(WaveNs::WaveXPathExpressionEvaluationContext&, WaveNs::YangElement const*) const
WaveNs::WaveXPathExpressionEquals::evaluateElement(WaveNs::WaveXPathExpressionEvaluationContext&, WaveNs::YangElement const*) const
WaveNs::WaveXPathExpressionXPath::evaluateElement(WaveNs::WaveXPathExpressionEvaluationContext&, WaveNs::YangElement const*) const
WaveNs::YangDisplayWhen::evaluateCondition(WaveNs::YangDisplayConfigurationContext*)
WaveNs::YangDataElement::evaluateWhenConditions(WaveNs::YangDisplayConfigurationContext*)
WaveNs::YangContainer::displayConfiguration3(WaveNs::YangDisplayConfigurationContext*, std::vector<WaveNs::YangElement*, std::allocator<WaveNs::YangElement*> >&)
WaveNs::YangElement::displayConfiguration1(WaveNs::YangDisplayConfigurationContext*)
WaveNs::YangUserInterface::printConfiguration(WaveNs::YangDisplayConfigurationContext*)
DcmNs::RunningConfigActionpointWorker::displayConfiguration(confd_user_info*, DcmNs::RunningConfigActionpointWorkerDisplayConfigurationContext*, std::string const&)
DcmNs::RunningConfigActionpointWorker::commandHandler(confd_user_info*, char*, int, char**)
DcmNs::ConfdInterfaceObjectManager::sa_command(confd_user_info*, char*, int, char**)
/usr/confd/lib/libconfd.so [0x7e41eb0]
confd_fd_ready
DcmNs::ConfdNewActionThread::start()
WaveNs::PrismPosixThread::pthreadStartMethod(WaveNs::PrismPosixThread*)
/lib/libpthread.so.0 [0xe09be58]
clone

2019/09/18-10:59:14, [HASM-1200], 7767, SW/0 | Active | FFDC, WARNING, WB-SW-skb, Detected termination of process Dcmd.Linux.powe:3815.
application communication failure
VDX2# ********************************************
* Daemon dcm:3815 died (0)
* Failover/Reboot (died), Wed Sep 18 10:59:16 2019
********************************************

 
Environment
  • VDX6740
  • NOS 6.0.2c
Cause
It is suspected that database corruption is triggering a reload every time this VDX tries to read its own running config.
Resolution
Database corruption is recoverable through netinstall of the affected device. For more information please refer to How to perform netinstall on VDX 6740 and 6940 via USB? and  TFTP/NFS netinstall on 6740/6940/8770.
Additional notes

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