Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-16116

Server should not start if datafiles from other storage engine are present in dbpath

    XMLWordPrintableJSON

Details

    • Icon: Improvement Improvement
    • Resolution: Duplicate
    • Icon: Minor - P4 Minor - P4
    • None
    • 2.8.0-rc0
    • Storage, Usability
    • None

    Description

      Say I start mongod with mmapv1 enabled in a clean directory:

      mongod --dbpath=mongodata --storageEngine=mmapv1

      Then exit the server.

      then if I start the server with the same dbpath but with wiredtiger:

      mongod --dbpath=mongodata --storageEngine=wiredtiger

      the server will happily start writing data files to the same directory mmapv1 was using. (Also happens if I do wiredtiger, than mmap)

      This is probably going to cause some confusion and/or misconfiguration at some point. I think it would be better if we detected that we are starting in a non-empty dbpath with incompatible data files and refuse to start.

      Attachments

        Activity

          People

            Unassigned Unassigned
            adam.midvidy Adam Midvidy
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: