[Bug 1750763] Re: local-premount/resume script broken, resume fails

[Benjamin Drung]

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** Changed in: initramfs-tools (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1750763

Title:
  local-premount/resume script broken, resume fails

Status in initramfs-tools package in Ubuntu:
  Incomplete

Bug description:
  On bionic, the initramfs pre-mount/resume script contains this call to
  /bin/resume:

     /bin/resume ${DEV}
   
  Unfortunately, the ${DEV} variable is never set, causing all resumes to fail, with this error in initramfs.debug:

    + /scripts/local-premount/resume
    + PREREQ=
    + [ -z UUID=16195e13-9fb3-41b2-9671-fb4e1df1ff93 ] 
    + [ ! -e /sys/power/resume ]
    + . /scripts/functions
    + . /scripts/local
    + wait-for-root UUID=16195e13-9fb3-41b2-9671-fb4e1df1ff93 5
    + SWAPTYPE=swsuspend
    + [ -x /bin/plymouth ]
    + plymouth --ping
    + [ -n  ]
    + /bin/resume
    Usage: /bin/resume /dev/<resumedevice> [offset]

  This seems a porting bug: the Debian version
  (https://anonscm.debian.org/cgit/kernel/initramfs-
  tools.git/tree/scripts/local-premount/resume) calls
  local_device_setup(), whioch sets DEV.  This call is missing in the
  Ubuntu (bionic, 0.130ubuntu2) version.

  In my case, a simple

     DEV=$(resolve_device "${resume}")

  also solved the issue, but I guess the Debian solution is nicer.

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