[Bug 1760106] Re: FFe: Enable configuring resume offset via sysfs

[Steve Langasek]

Hello Mario, or anyone else affected,

Accepted systemd into bionic-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.2 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-bionic to verification-done-bionic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-bionic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Tags removed: verification-done verification-done-bionic
** Tags added: verification-needed verification-needed-bionic

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https://bugs.launchpad.net/bugs/1760106

Title:
  FFe: Enable configuring resume offset via sysfs

Status in OEM Priority Project:
  New
Status in klibc package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Fix Released
Status in systemd package in Ubuntu:
  Fix Committed
Status in klibc source package in Bionic:
  New
Status in linux source package in Bionic:
  Fix Released
Status in systemd source package in Bionic:
  Fix Committed
Status in klibc source package in Cosmic:
  New
Status in linux source package in Cosmic:
  Fix Released
Status in systemd source package in Cosmic:
  Fix Committed

Bug description:
  [Impact]

   * Cannot hibernate & resume from a swapfile

  [Test Case]

   * Create or enlarge swapfile to be big enough for hibernation
   * Attempt to hibernate and resume

  [Regression Potential]

   * Hibernation is not reliable technology in itself, and multiple
  things may cause failure to resume. Thus it is sufficient to validate
  this bug after swapfile is attempted for hibernation and the disk
  offset kernel parameter is modified. Irrespective if actual suspending
  or resume were successful or not.

  [Other Info]
   
   * Original bug report

  In 4.17 a new attribute is introduced to configure the hibernation
  resume offset. Since Ubuntu enables a swapfile by default this
  attribute is important to be able to make hibernation work "out of the
  box".

  The patch in the kernel is here:
  https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?h=linux-next&id=355064675f1c997cea017ea64c8f2c216e5425d9

  Systemd support for adopting this change is available here:
  https://github.com/systemd/systemd/pull/8406
  As of 3/30/18 it's not yet been merged however.

  Klibc support for adopting this change is available here:
  https://www.zytor.com/pipermail/klibc/2018-March/003986.html

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