# Using fly volumes with Mnesia, Phoenix and Pow

**URL:** <https://community.fly.io/t/using-fly-volumes-with-mnesia-phoenix-and-pow/1756>\
**Category:** Questions / Help\
**Tags:** elixir, databases, volumes\
**Created:** [June 22, 2021, 11:59am UTC](https://community.fly.io/t/using-fly-volumes-with-mnesia-phoenix-and-pow/1756 "2021-06-22T11:59:02Z")\
**Posts on this page:** 1\
**Showing post:** 18

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**Author:** ![jstiebs](https://sea1.discourse-cdn.com/fly1/user_avatar/community.fly.io/jstiebs/32/8602_2.png) [@jstiebs](https://community.fly.io/u/jstiebs)\
**Post date:** [March 1, 2023, 6:11pm UTC](https://community.fly.io/t/using-fly-volumes-with-mnesia-phoenix-and-pow/1756/18 "2023-03-01T18:11:08Z")

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I put together a minimal test case that would exercise the mnesia code erroring here [GitHub - jeregrine/perm\_error](https://github.com/jeregrine/perm_error) and I also cannot reproduce [the error](https://github.com/pow-auth/pow/blob/main/lib/pow/store/backend/mnesia_cache.ex#L391-L394) seen here.

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_[View the full topic](https://community.fly.io/t/using-fly-volumes-with-mnesia-phoenix-and-pow/1756)._