Eric Carbonneau comments

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                                            Eric Carbonneau

dsync generates MPI error when I'm not the owner of the source path

The dsync utility is used to synchronize file and directories. Which means, once the files/directories are copied over, the process will check for differences as owner (uid) and group id...

dsync generates MPI error when I'm not the owner of the source path

If there is no objection, I will close this issue.

dsync generates MPI error when I'm not the owner of the source path

I totally agree with you on the use of dsync instead of dcp. I was trying to explain the error he saw. I was not able to reproduce it using...

dsync: no even distribution of data on the Lustre OST's

This was an issue with the client of the file system mounted. Since the patch pointed at by adilger worked out, I will close this issue.

dtar failed to extract entry - line too long

I wasn't able to replicate this one but I'm getting back on it. Do you have an idea of the directories depth and sting length by any chance?

dtar failed to extract entry - line too long

The only way I was able to reproduce the issue was to create an archive with tar (not dtar). Which leads me to believe your archive was not created with...

dtar failed to extract entry - line too long

My findings: dtar is built on top of libcircle which limits buffers to 4KiB to sends between ranks (processes). Incidentally dtar is limited to chunks and buffers of the same...