[LSF/MM TOPIC] Enhancing Copy Tools for Linux FS

Steve French smfrench at gmail.com
Fri Feb 8 15:19:33 UTC 2019

Current Linux copy tools have various problems compared to other
platforms - small I/O sizes (and not even configurable for most), lack
of parallel I/O for multi-file copies, inability to reduce metadata
updates by setting file size first, lack of cross mount (to the same
file system) copy optimizations, limited ability to handle the wide
variety of server side copy (and copy offload) mechanisms and various
error handling problems.   And copy tools rely less on the kernel file
system (vs. code in the user space tool) in Linux than would be
expected, in order to determine which optimizations to use.

Would like to discuss some of the observations about copy tools and
how we can move forward on improving the performance of common copy



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