group.of.nepali.translators team mailing list archive

[dann frazier <dann.frazier@xxxxxxxxxxxxx>]

Public bug reported:

[Impact]
hdparm can cause certain systems to occasionally fail to boot. hdparm tries to enable APM on every (non-USB/non-firewire) disk in the system without first checking if APM is supported. This *should*
be OK, since hdparm fails gracefully in this case. However, sending APM commands to disks that don't support it can have side-effects. I received a report that this was causing bus resets on a Cavium Sabre system with the disk below that would sometimes escalate to a boot failure.

[Test Case]
Boot a system with a non-USB/non-firewire disk that does not support APM and verify that there are no kernel messages like:

SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 04 53 40 fe 21 04
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 APM_level = not supported


[Regression Risk]
This change entered Debian and Ubuntu 1 month ago, and no regressions have been reported. One source of regressions might be that configuring APM on a disk that claims not to support it did have some positive side-effect that would no longer occur.

** Affects: hdparm (Ubuntu)
     Importance: Undecided
         Status: Fix Released

** Affects: hdparm (Ubuntu Xenial)
     Importance: Undecided
     Assignee: dann frazier (dannf)
         Status: In Progress

** Affects: hdparm (Ubuntu Artful)
     Importance: Undecided
     Assignee: dann frazier (dannf)
         Status: In Progress

** Affects: hdparm (Ubuntu Bionic)
     Importance: Undecided
         Status: Fix Released

** Also affects: hdparm (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: hdparm (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: hdparm (Ubuntu Artful)
   Importance: Undecided
       Status: New

** Changed in: hdparm (Ubuntu Bionic)
       Status: New => Fix Released

** Changed in: hdparm (Ubuntu Artful)
       Status: New => In Progress

** Changed in: hdparm (Ubuntu Xenial)
       Status: New => In Progress

** Changed in: hdparm (Ubuntu Xenial)
     Assignee: (unassigned) => dann frazier (dannf)

** Changed in: hdparm (Ubuntu Artful)
     Assignee: (unassigned) => dann frazier (dannf)

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https://bugs.launchpad.net/bugs/1757481

Title:
  Only enable APM on disks that advertise it

Status in hdparm package in Ubuntu:
  Fix Released
Status in hdparm source package in Xenial:
  In Progress
Status in hdparm source package in Artful:
  In Progress
Status in hdparm source package in Bionic:
  Fix Released

Bug description:
  [Impact]
  hdparm can cause certain systems to occasionally fail to boot. hdparm tries to enable APM on every (non-USB/non-firewire) disk in the system without first checking if APM is supported. This *should*
  be OK, since hdparm fails gracefully in this case. However, sending APM commands to disks that don't support it can have side-effects. I received a report that this was causing bus resets on a Cavium Sabre system with the disk below that would sometimes escalate to a boot failure.

  [Test Case]
  Boot a system with a non-USB/non-firewire disk that does not support APM and verify that there are no kernel messages like:

  SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 04 53 40 fe 21 04
  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   APM_level = not supported

  
  [Regression Risk]
  This change entered Debian and Ubuntu 1 month ago, and no regressions have been reported. One source of regressions might be that configuring APM on a disk that claims not to support it did have some positive side-effect that would no longer occur.

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