[Bug 1583563] Re: System will not start with multipathd enabled

Dimitri John Ledkov launchpad at surgut.co.uk
Fri May 20 13:15:16 UTC 2016


Playing with this more, I think I see what you mean now. Indeed there
appear to be bugs.

Martin,

Could you please take a look at all the systemd units and init scripts,
and how they intervene with each other?

* /etc/init.d/multipath-tools-boot
  - this one works fine

* /etc/init.d/multipath-tools
  - this one is enabled by default, and starts up without loading dm-multipath first

* /lib/systemd/system/multipathd.service
  - a trap, that is easy to shoot oneself in the foot.
  - has alias Alias=multipath-tools.service but doesn't appear to properly be enabled in maintainer scripts, and doesn't seem to be masking multipath-tools-boot initscript at all.
  - does not appear to be operational properly. 
  - references non-existant units
  - deamon fails to create socket... yet unit declares that socket activation is to be used.

Could you please dig further into these units and check what needs
fixing?

** Changed in: multipath-tools (Ubuntu)
       Status: New => Confirmed

** No longer affects: ubuntu-z-systems

** Changed in: multipath-tools (Ubuntu)
     Assignee: (unassigned) => Martin Pitt (pitti)

** Changed in: multipath-tools (Ubuntu)
   Importance: Undecided => High

** Also affects: multipath-tools (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: multipath-tools (Ubuntu Xenial)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1583563

Title:
  System will not start with multipathd enabled

Status in multipath-tools package in Ubuntu:
  Confirmed
Status in multipath-tools source package in Xenial:
  New

Bug description:
  If I do these three commands on a fresh Ubuntu clone which has one
  pair of FCP devices pointing to a LUN:

  # apt-get -y install multipath-tools
  # systemctl enable multipathd
  # reboot

  The system will not come back up. It seems to spin with the messages:
  “A start job is running for Device-M...vice Controller (<x> / 1min
  30s)”  In 90 seconds it times out and starts counting again.

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