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Kirill Smelkov authored
Currently it is easy to deadlock wcfs by opening .wcfs/zhead and not reading from opened zhead handle due to the nature of what this zhead file is designed to do. For this reason we want .wcfs/zhead not to be present on production deployments and be available only where it is needed - during test runs. -> Introduce -debug flag for that to "enable debugging features" and put .wcfs/zhead to be that debug-only feature, and move it to be .wcfs/debug/zhead for clarity.
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