group.of.nepali.translators team mailing list archive

[Frank Heimes <1893897@xxxxxxxxxxxxxxxxxx>]

The commit has the hash 5f4b3a8fa343 in focal and is tagged with 'ubuntu-5.4.0-49.53'
and since we are at 5.4.0.51.54 in focal-updates:
⇒ linux-generic | 5.4.0.51.54    | focal-updates   | ppc64el
this is now released for focal, hence updating the status of the focal entry to Fix Released.

The commit has the hash cd712137c681 in bionic and is tagged with 'Ubuntu-4.15.0-119.120'
and since we are at 4.15.0.121.108 in bionic-updates:
⇒ linux-generic | 4.15.0.121.108 | bionic-updates  | ppc64el
this is now released for bionic, hence updating the status of the bionic entry to Fix Released.

The commit has the hash 3545f96c525b in xenial and is tagged with:
Ubuntu-4.4.0-191.221
Ubuntu-4.4.0-192.222
Ubuntu-4.4.0-193.224
and since we are at 4.4.0.193.199 in xenial-updates:
⇒ linux-generic | 4.4.0.193.199  | xenial-updates  | ppc64el
this is now released for xenial, hence updating the status of the xenial entry to Fix Released.

And with that closing the entire bug as Fix Released, too.

** Changed in: linux (Ubuntu Focal)
       Status: Fix Committed => Fix Released

** Changed in: linux (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

** Changed in: linux (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

** Changed in: ubuntu-power-systems
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1893897

Title:
  [Regression] Do not initiate shutdown for EPOW_SHUTDOWN_ON_UPS event

Status in The Ubuntu-power-systems project:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Bionic:
  Fix Released
Status in linux source package in Focal:
  Fix Released
Status in linux source package in Groovy:
  Fix Released

Bug description:
  SRU Justification:

  [Impact]

  * With commit 79872e35469b "powerpc/pseries: All events of
  EPOW_SYSTEM_SHUTDOWN must initiate shutdown" it was introduced that
  all EPOW_SYSTEM_SHUTDOWN events cause immediate shutdowns.

  * But on LPARs there is a user space tool (rtas_errd) that monitor for
  EPOW_SHUTDOWN_ON_UPS events.

  * Once rtas_errd gets an event it initiates a shutdown after
  predefined time.

  * Therefore immediate shutdowns must not be triggered if the system is
  running on UPS (means for EPOW_SHUTDOWN_ON_UPS events).

  [Fix]

  * 90a9b102eddf6a3f987d15f4454e26a2532c1c98 90a9b102eddf
  "powerpc/pseries: Do not initiate shutdown when system is running on
  UPS"

  [Test Case]

  * Setup a Power system on (D)LPAR and run it on UPS with Ubuntu 16.04
  or higher (kernel 4.x is needed).

  * Verify that the user space tool (rtas_errd) is active and running.

  * Define a time for a potential shutdown in case an
  EPOW_SHUTDOWN_ON_UPS event occurs.

  * Trigger an EPOW_SHUTDOWN_ON_UPS event.

  * Verify if the system got shutdown immediately - or after the pre-
  defined time.

  [Regression Potential]

  * The regression risk is very low, because of the very limited
  modification in a case statement for EPOW_SHUTDOWN_ON_UPS events.

  * What may happen is that the system doesn't power off anymore if
  running on UPS due to the EPOW_SHUTDOWN_ON_UPS case changes -
  especially if there is a potential problem with rtas_errd that should
  monitor for these events and should initiate the delayed shutdown.

  * Other than that I cannot see much potential harm.

  [Other]

  * The patch got upstream accepted in v5.9-rc2 and already landed in
  groovy's kernel 'Ubuntu-5.8.0-18.19', based on the v5.8.4 upstream
  stable release ticket LP 1893048.

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