Understanding Ceph journals

Updated -


  • The purpose of a Ceph Journal is to ensure write consistency. When designed and configured properly, a journal can absorb small writes better than the backing disk. A each write operation is first stored to the Ceph journal. These operations can be replayed in the event of an OSD failure. Every few seconds (by default), the journal is synchronized to the OSD fil...

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content