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  1. WiredTiger
  2. WT-4225

Automate a backup test that simulates volume snapshot via dd

    • Storage Engines 2018-08-13, Storage Engines 2018-08-27, Storage Engines 2018-09-10, Storage Engines 2018-09-24

      We've seen bugs in the past with the order of fsync calls required for durability across system crash. A way we can test for bugs like that is to make copies of the database directory using the dd with iflags=direct set to bypass the filesystem cache.

      We should construct such a test and automate it. We've seen a case recently (see WT-3829( where older versions of WiredTiger saw failures using such a scheme around opening a backup cursor - so we should be sure to test with copies tightly around backup cursor creation.

            donald.anderson@mongodb.com Donald Anderson
            alexander.gorrod@mongodb.com Alexander Gorrod
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