Josh McKenzie created CASSANDRA-16879:
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Summary: Verify correct ownership of attached locations on disk at
C* startup
Key: CASSANDRA-16879
URL: https://issues.apache.org/jira/browse/CASSANDRA-16879
Project: Cassandra
Issue Type: Improvement
Components: Local/Startup and Shutdown
Reporter: Josh McKenzie
Assignee: Josh McKenzie
There's two primary things related to startup and disk ownership we should
mitigate.
First, an instance can come up with an incorrectly mounted volume attached as
its configured data directory. This causes the wrong system tables to be read.
If the instance which was previously using the volume is also down, its token
could be taken over by the instance coming up.
Secondly, in a JBOD setup, the non-system keyspaces may reside on a separate
volume to the system tables. In this scenario, we need to ensure that all
directories belong to the same instance, and that as the instance starts up it
can access all the directories it expects to be able to. (including data,
commit log, hints and saved cache dirs)
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