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[James Henstridge <james.henstridge@xxxxxxxxxxxxx>]

** Project changed: mediascanner2 => mediascanner2 (Ubuntu)

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https://bugs.launchpad.net/bugs/1415488

Title:
  Fix update reliability problem

Status in mediascanner2 package in Ubuntu:
  New

Bug description:
  Currently the dash does not always get results when querying during
  system scans. The reason for this is that reads and writes clash with
  each other in SQLite's default journaling mode. There is a retry logic
  but sometimes it still fails even with 100 retries.

  SQLite has a solution for this which is moving to WAL logging.
  Unfortunately that requires read/write access to the db and some
  auxiliary files even for readers (if you try it works, but all queries
  return empty). This is prohibited by current app armor policy.

  There does not seem to be a simple solution for this issue. Ones with
  more work include:

  - loosening app armor rules for apps that need the db (music-app, others?)
  - moving all queries behind a dbus service

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