Symptoms
NetWoker 9.1.1.3 silon Multi-Streaming NDMP backups failing with Broken Pipe errorNDMP data backup succeeds but history index backup fails at the end with Broken Pipe errorHistory file backup fails, so NetWorker removes all successful NDMP data backupMulti-Streaming is set via Client Parallesim and Action/group Parallelism values to 8.Changing Action/group parallelism to 4 does not take effect and does not fix the issue (as per NetWorker NDMP user Guide Action/group parallelism should override Client Parallelism)Error in policy logs: level=full, 1229 GB 10:01:45 12420 filescompleted savetime=1505323587nsrndmp_save: Save session closed with NW server successfully42917:nsrndmp_save: Processing NDMP File History...42918:nsrndmp_save: Processing NDMP File History completed Successfully on '' in 00:00:00 Hours42920:nsrndmp_save: browsable savetime=150532358742697:nsrndmp_save: Leaving /nsr/tmp/FileIndex297364032/fhfile.042927:nsrndmp_save: Successfully done76677:nsrdsa_save: RPC send operation failed; peer = 127.0.0.1:9219, errno = Broken pipe76677:nsrdsa_save: RPC send operation failed; peer = 127.0.0.1:9219, errno = Broken pipe76677:nsrdsa_save: RPC send operation failed; peer = 127.0.0.1:8338, errno = Broken pipe
Cause
The Client Application Information HIST parameter is set to HIST=Y or HIST=F.
Resolution
To fix this issue, change the HIST parameter in the Application Information field of the client resource to HIST=D (multi-streaming).Here is from NetWorker NDMP User Guide 9.1:Table 29 Isilon Application Information variables: HIST=F/D Set this variable to F for Checkpoint Restart backups, to ensure the use of path based file history. Set this variable to D to enable concurrent streaming.
