[Bug 1681190] [NEW] I/O errors on disc from optical drive can block raising the network

[Sworddragon]

Public bug reported:

I'm using Ubuntu 17.04 dev with systemd 232-21ubuntu2 and I'm using an
automounter which does also mount discs in optical drives and on having
a damaged disk (from too much overwriting) in /dev/sr0 inserted I'm
getting I/O errors as expected (blk_update_request: I/O error, dev sr0,
sector 0) but the console shows then "A start job is running for Raise
network interfaces" with a maximum time of 5 minutes and 2 seconds which
doesn't progress until I'm ejecting the disc in /dev/sr0.

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1681190

Title:
  I/O errors on disc from optical drive can block raising the network

Status in systemd package in Ubuntu:
  New

Bug description:
  I'm using Ubuntu 17.04 dev with systemd 232-21ubuntu2 and I'm using an
  automounter which does also mount discs in optical drives and on
  having a damaged disk (from too much overwriting) in /dev/sr0 inserted
  I'm getting I/O errors as expected (blk_update_request: I/O error, dev
  sr0, sector 0) but the console shows then "A start job is running for
  Raise network interfaces" with a maximum time of 5 minutes and 2
  seconds which doesn't progress until I'm ejecting the disc in
  /dev/sr0.

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