[Bug 1776626] Comment bridged from LTC Bugzilla

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------- Comment From heinz-werner_seeck at de.ibm.com 2019-03-05 10:44 EDT-------
IBM bugzilla status -> closed, Fix Released for all requested distros

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https://bugs.launchpad.net/bugs/1776626

Title:
  [18.10 FEAT] Support 4k sectors for fast clear key dm-crypt - crypttab
  part

Status in Ubuntu on IBM z Systems:
  Fix Released
Status in cryptsetup package in Ubuntu:
  Fix Released
Status in systemd package in Ubuntu:
  Fix Released
Status in cryptsetup source package in Bionic:
  Won't Fix
Status in systemd source package in Bionic:
  Fix Released

Bug description:
  [Impact]

   * cryptsetup in bionic supports creating luks volumes with a non-
  standard sector-size option, and thus this option also needs to be
  used when activating the LUKS volumes. Add sector-size= option support
  to /etc/crypttab.

  [Test Case]

   * Create a plain LUKS volume with sector-size 4096
   * Specify sector-size=4096 option in /etc/crypttab
   * reload systemd, start systemd-cryptsetup at .service for that volume
   * check the journal, to ensure that `sector-size` option was recognized and is active. (i.e. there is not error messages about unrecognized option `sector-size` from systemd-cryptsetup)

  [Regression Potential]

   * This is an optional argument, not used by default. Currently custom
  sector-size crypttab does not work correctly, and thus cannot regress.

  [Other Info]
   
   * Original bug report

  Support fast clear key dm-crypt with 4k support

  Extend /etc/crypttab  to enable 4k sector support in plain mode

  The proposed enhancements are posted on github, see
       https://github.com/systemd/systemd/issues/8881

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