It must be a sparse file, to blow up like that when copied. Compare ls -lh nohup.out with du -hs nohup.out, if they differ significantly, nohup.out is sparse.
As for why nohup.out is sparse, have you been truncating the file while its still live? This will cause large amounts of empty space at the beginning of the file since the process will continue writing at the "end". They won't be stored on disk, just assumed to be there, until you copy it.
That problem will need to be taken care of before you can copy the file.
Thank you very much for a quick respond.
This is new to me. They are different when using ls -lh and du -sh.
====================
/dir > ls -lh nohup.out
-rw------- 1 a b 1.7G Mar 10 15:02 nohup.out
/dir > du -sh nohup.out
3.9M nohup.out
/dir >
==================
How can I solve this problem ?
thank you vey much.
Whatever is writing these nohup.out files will need modification, to prevent it writing sparse files. What you're doing right now isn't working, it's generating these weird sparse files instead of starting over at position zero.
What's writing these logfiles? Can you show us the code? You may be able to convince it to move its own logfiles on command.
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03-10-2017
