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Unable to run NDMP backup on flexgroup volumes via Avamar

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Category:
ndmp
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dp
Last Updated:

Applies to

  • Dell EMC Avamar v19.4
  • ONTAP 9.9.1
  • FlexGroup
  • NDMP

Issue

  • Avamar NDMP backup for FlexGroup is failing with these errors:
 
avtar FATAL <8490>: Invalid stream format: magic number 6dea0000 (stream offset = 1024)
avtar FATAL <0000>: Backup 'MOD-1555374315747#1' to DDR not sealed due to previous errors
avtar Info <0000>: Entering the 'final' phase of termination, Fatal error encountered)
 
 
[ctl_spawn] Process 53298 (/usr/local/avamar/bin/avtar) finished (code 174: error occurred while processing DUMP stream)
[ctl_spawn] CTL workorder "MOD-1555374315747#1" non-zero exit status 'code 174: error occurred while processing DUMP stream'
[snapup-/svm1/fg_test] Waiting for data transfer thread to exit
[snapup-/svm1/fg_test] Backup for target /svm1/fg_test had errors.
[snapup-/svm1/fg_test] Backup of '/svm1/fg_test' aborted. Error in NDMP session.
 
  • NDMP log shows the NDMP session has been completed:
[12345] DEBUG: DMA<<S V4 sequence=33 (0x21)
[12345] DEBUG: Time_stamp=0x62ab501e (Jun 16 17:45:34 2022)
[12345] DEBUG: message type=0 (NDMP4_MESSAGE_REQUEST)
[12345] DEBUG: message_code=0x603 (NDMP4_LOG_MESSAGE)
[12345] DEBUG: reply_sequence=0 (0x0)
[12345] DEBUG: error_code=0 (NDMP4_NO_ERR)
[12345] DEBUG: log_type=0 (NDMP4_LOG_NORMAL)
[12345] DEBUG: message_id=18 (0x12)
[12345] DEBUG: entry='DUMP: DUMP IS DONE\n'
[12345] DEBUG: Time_Out::Timer 0x808b34d80 1655394623.675495 vs 1655394334.413775 (next 0x0)
[12345] DEBUG: Time_Out::next timeout 1655394623.675495
[12345] DEBUG: MGMT_RPC::raw_rpc_input mgmt_rpc = 0x8088351c0, buf_stream = 0x80882de00
 
 
  • Avamar is closing the session:
[12345] DEBUG: DMA>>S V4 sequence=17 (0x11)
[12345] DEBUG: Time_stamp=0x62ab501e (Jun 16 17:45:34 2022)
[12345] DEBUG: message type=0 (NDMP4_MESSAGE_REQUEST)
[12345] DEBUG: message_code=0x902 (NDMP4_CONNECT_CLOSE)
[12345] DEBUG: reply_sequence=38 (0x26)
[12345] DEBUG: error_code=0 (NDMP4_NO_ERR)
[12345] DEBUG: service_terminate called
[12345] DEBUG: received CLOSE command from [133.168.171.12].23456
[12345] DEBUG: cleanupOnClose: cookie = 0
[12345] DEBUG: DATA session_close: called
[12345] INFO: DATA: sending backup ABORT
[12345] DEBUG: COMMON_State::data_abort: called

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