[Bug 1783994] Re: systemd spams log with "Failed to dissect: Input/output error" on systems with mmc

[Dan Streetman]

>From a quick read of the upstream bug, it seems like this requires commits:
7be1420f44465a96d098a33c12c5a61dcefb14aa
a3a3b6131eb2c44b3b94df973e6edd2e4c8d2095
cde942f61bf231ea4a0d50780cdb4e744458daeb

The first 2 are in Bionic already, so as @marvin24 states in comment 1
only the 3rd should be needed.

** Also affects: systemd (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: systemd (Ubuntu)
       Status: Confirmed => Fix Released

** Changed in: systemd (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: systemd (Ubuntu Bionic)
   Importance: Undecided => Medium

** Changed in: systemd (Ubuntu Bionic)
     Assignee: (unassigned) => Dan Streetman (ddstreet)

** Tags added: next-ddstreet systemd

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https://bugs.launchpad.net/bugs/1783994

Title:
  systemd spams log with "Failed to dissect: Input/output error" on
  systems with mmc

Status in systemd:
  Unknown
Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Bionic:
  In Progress

Bug description:
  If a device has an mmc installed, systemd-gpt-auto-generator will fail because of "special partition" (rpmb, boot) and record a log message: 
  systemd-gpt-auto-generator[207]: Failed to dissect: Input/output error
  This issue was discussed here:  https://github.com/systemd/systemd/issues/5806
  and a fix is proposed for new systemd versions. Please include in bionic.

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