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[FEATURE] Support v2 volume without hugepage #7066

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@derekbit

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Is your feature request related to a problem? Please describe (👍 if you like this request)

hugepage is evitable for supporting v2 volume feature. Although huge page can improve the IO performance, but there are some drawbacks

  • not easy to modify the size dynamically
  • dedicated memory size (waste)
  • memory pressure for low-spec machines

There is a discussion in spdk/spdk#2973 for the no hugepage support. Although it is not implemented yet, but we can continue investigating the design, implementing it and integrating it into v2 volume.

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area/spdkSPDK upstream/downstreamarea/v2-data-enginev2 data engine (SPDK)investigation-neededIdentified the issue but require further investigation for resolution (won't be stale)kind/featureFeature request, new featurepriority/0Must be implement or fixed in this release (managed by PO)require/auto-e2e-testRequire adding/updating auto e2e test cases if they can be automatedrequire/docRequire updating the longhorn.io documentationrequire/lepRequire adding/updating enhancement proposal

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