Is rename() without fsync() safe?

by

No.

Look at libeatmydata, and this presentation:

Eat My Data: How Everybody Gets File IO Wrong

http://www.oscon.com/oscon2008/public/schedule/detail/3172

by Stewart Smith from MySql.

In case it is offline/no longer available, I keep a copy of it:

  • The video here
  • The presentation slides (online version of slides)

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