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As is, the CnC file size seems to be determined by the individual sizes of four buffers and its header. Unfortunately, my version of hugetblfs only seems to allow passing truncate sizes that are multiples of the hugepage size (in my case, 2MB). This causes Aeron to be unable to construct its cnc file on a hugetblfs mount. I would expect that this condition is not unique to hugetblfs but might be seen on other less common file systems. I would like the option to round the CnC file size to a specific increment, hopefully through the same system properties system as other values like the buffer sizes mentioned above.
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