Hi, I see har tries to resolve the random access problem with tar. But it
introduces other limitations, e.g., file size limit and only working on
Linux for now.

https://github.com/acg/har/blob/master/README.md#about-har

Also, it is not clear whether multiple files in an archive can be
concurrently read/write.

Does anybody know if there is a drop-in replacement of tar that can support
both features (random access and concurrency)?

Note, both needs come from the usage of network file systems like glusterfs
which is very inefficient to ls a large number of files but is OK to handle
large files. If there is a drop-in replacement of tar satisfying the above
two features, then we may circumvent the limitation of glusterfs.

-- 
Regards,
Peng

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