** Summary changed:

- PPC system locks up after sas3ircu command is issued during RAID rebuild
+ System locks up after issuing a sas3ircu storage management command during 
RAID rebuild

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1613925

Title:
  System locks up after issuing a sas3ircu storage management command
  during RAID rebuild

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  We have a PPC system on Ubuntu 16.04.1 LTS that will lock up if we issue a 
display or status command to the RAID controller during RAID rebuild process.  
The HDDs where the Operating system resides will change to RO (Read Only) once 
we trigger the problem.  This will only occur if the Operating System's HDDs 
are also connected to the RAID controller.  We've tried this problem with the 
OS residing on a USB and this problem does not occur.
    
  Apport is not writing or reporting anything in the "/etc/apport/" directory
  "ubuntu-bug" is not accessible after the crash.

  
  Ubuntu 16.04.1 LTS
  4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:05:18 UTC 2016 ppc64le
  PPC64EL (Power8)
  RAID Controller: LSI SAS3008
     - Driver: mpt3sas
     - Driver version: 12.100.00.00
  HDDs:
     - 2x WD Re SATA WD5003ABYZ-011FA0 (RAID0 / OS resides)
     - 2x Seagate ST6000NM0034 (FW: E001) (RAID1)

  1.) Ubuntu 16.04.1 LTS
  2.) 4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:05:18 UTC 2016 ppc64le
  3.) A driver update to prevent this from crashing the system.
  4.) The system crashed.  Please read the first paragraph above.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: udisks2 (not installed)
  ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
  Uname: Linux 4.4.0-31-generic ppc64le
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: ppc64el
  Date: Tue Aug 16 18:23:32 2016
  InstallationDate: Installed on 2016-08-16 (0 days ago)
  InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release ppc64el 
(20160719)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcLoadAvg: 0.00 0.01 0.00 1/1117 9416
  ProcLocks:
   1: FLOCK  ADVISORY  WRITE 7727 00:17:5 0 EOF
   2: FLOCK  ADVISORY  WRITE 7723 00:14:631 0 EOF
  ProcSwaps:
   Filename                             Type            Size    Used    Priority
   /dev/sda3                               partition    39432128        0       
-1
  ProcVersion: Linux version 4.4.0-31-generic (buildd@bos01-ppc64el-028) (gcc 
version 5.3.1 20160413 (Ubuntu/IBM 5.3.1-14ubuntu2.1) ) #50-Ubuntu SMP Wed Jul 
13 00:05:18 UTC 2016
  SourcePackage: udisks2
  Symptom: storage
  Title: No permission to access files on storage device
  UpgradeStatus: No upgrade log present (probably fresh install)
  cpu_cores: Number of cores present = 20
  cpu_coreson: Number of cores online = 20
  cpu_smt: SMT=8

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