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PowerScale OneFS 9.8.0.0 Web Administration Guide

Cross protocol locking

S3 object operations only operate in the shared mode lock domain.

The S3 protocol ignores byte range locks and other advisory locks. The PUT object operation takes a share mode lock DENY_NONE on the target file with the delete access bit only for the rename operation on the target file which is released upon completion. The GET operation takes a shared mode lock DENY_WRITE on the file with the read access bit to maintain the atomicity during the read. This process ensures that the data is not modified from other clients or protocols during the GET object operation.


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