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Title
Duplicating between 2 DR4100 and it fails with “MSDataCopy Master: Slave [3337] still running error for Channel Down” -
Description
Duplication / datacopy jobs between 2 DR4100 fails with “MSDataCopy Master: Slave [3337] still running error for Channel Down”
Binary log extract below:
SevereError 2015/04/04 18:13:29 203 Data Plugin NVBU Failed to start segment file on Foreign RAS device
Error 2015/04/04 18:13:32 203 Data Plugin NVBU MSDataCopy Master: Slave [3337] still running error for Channel Down
MS_CPY :08040 131 0 181320 Connected - start stream copy
MS_CPY :08040 135 0 181320 slave [NVBU:3345] is in state[2]
MS_CPY :08040 138 0 181320 slave [NVBU:3345] Stream - id [9d633e864d989a85810d0000405d020000000000], LocalStreamId [127], length 42074112
MS_CPY :08040 55 0 181320 Sending start notification to slave [NVBU:3345]
MS_CPY :08040 52 0 181320 Slave info [NVBU:3345] set to running
MS_CPY :08040 129 0 181320 TRUE = CheckPendingTasks()
MS_CPY :08040 4 0 181320 InitSlaveAfterConnect() Throttling slave instances reached limit [5]
MS_CPY :08040 22 0 181330 Master timeout
MS_CPY :08040 24 0 181330 No task found at state TIMEDOUT
MS_CPY :08040 134 0 181332 Slaves - active 5 count 5
MS_CPY :08040 12 0 181332 Process Msg: [2705] [MSG_CHANNEL_DOWN_MSG] from [NVBU:3337]
MS_CPY :08040 16 0 181332 Slave process channel down
MS_CPY :08040 38 0 181332 Slave [NVBU:3337] still running -
Cause
BUG 28269
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Resolution
This Bug only happens very intermittently with duplications/ Data copies. There is no workaround to stop this happening at this time.
To work around this issue use backup retries in advanced option schedule set under secondary copies, if running the duplication/ data copy as a phase 2 job; or if running data copy, duplication as phase 1 backup use retries in the backup schedule set. This will resubmit the duplication X number of times if the duplication fails after X minutes.
As this is problem is rarely seen the second attempt at the duplication should complete.
Alternatively you can run the duplication again manually by selecting the duplication/data copy job in the failed job window and then selecting run now
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Defect ID
28269