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Ndmp backup using Avamar failing with magic number 0000ea7c

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ndmp
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Applies to

  • ONTAP 9.13.1
  • NDMP
  • Avamar backup

Issue

  • Avamar backup failing with the following error :

2025-11-05 15:16:54 avtar FATAL<8490>: Invalid stream format: magic number 0000ea7c (stream offset =94115840)

  • ONTAP Backup logs  :

dmp Fri Oct 17 11:46:10 WEST 2025/SVM_NFS/VOL1/(0) Phase_change (IV)
dmp Fri Oct 17 11:46:20 WEST 2025/SVM_NFS/VOL1/(0) Log_msg (Write DIRNET for BKP ID=1681,type=3 interrupted while at waiting for max inflight. Error = Broken pipe.)
dmp Fri Oct 17 11:46:20 WEST 2025/SVM_NFS/VOL1/(0) Error (Write to socket failed)

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