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

[Josep Pujadas-Jubany]

Lubuntu 18.04.3 64 bit fresh install + updates

$ dmesg | grep gpt
[    4.369738] systemd-gpt-auto-generator[292]: Failed to dissect: Input/output error
[    4.372348] systemd[285]: /lib/systemd/system-generators/systemd-gpt-auto-generator failed with exit status 1.

$lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.3 LTS
Release: 18.04
Codename: bionic

$ uname -a
Linux ubuntu-bellera 5.0.0-27-generic #28~18.04.1-Ubuntu SMP Thu Aug 22 03:00:32 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

Acer TravelMate B118-M (TMB118-M-C4AL manufactured date 2019/05/23)

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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 package in Ubuntu:
  Confirmed

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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