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[Ben McCann <1210104@xxxxxxxxxxxxxxxxxx>]

The files that have to be customized or overridden by adding hooks under
/etc are:

  /lib/udev/rules.d/64-md-raid.rules
  /usr/share/initramfs-tools/hooks/mdadm

so I think this is more of an MDADM issue instead of a generic
setup/config issue. But, that depends on which package actually owns
these files. (I didn't track that down).

That said, the 64-md-raid.rules file was changed by someone to fix
Ubuntu bug 1030292 to sort out some other issue and I found that I had
to partially *revert* that change to make Intel RAID work for me. So, if
we make Intel RAID work for me, then something else may break. Which is
preferable?

I'll try to get on help.ubuntu.com to write this up.

BTW, one of the nastiest issues with Intel RAID isn't getting it
started. Its getting it stopped correctly during a shut down. That was a
major PITA and I eventually had to hack the KDE (!!) shutdown scripts to
umount the file systems I have on RAID when I log out. So, I mount RAID
during KDM startup and unmount during KDM shutdown.

I couldn't find any other way issue the magic 'mdadm -Ss --wait-clean'
command required to cleanly stop the array so it wouldn't re-sync (re-
mirror) itself on the next reboot.

This is such a total hack that I wouldn't accept it into production
code. But, if there's a better way to force a command to be executed
during a shutdown and umount then I'd be happy to help trouble-shoot it.
I couldn't find a better method and I tried a number of different
approaches to changing the scripts under /etc to do this more cleanly
than hacking KDE startup and shutdown.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1210104

Title:
  Intel FakeRAID *Regression* in Kubuntu 12.04 with Linux 3.2.0-51

Status in “linux” package in Ubuntu:
  Invalid

Bug description:
  I have been using Intel FakeRAID on an Asus Z77 motherboard on Kubuntu
  12.04 for months. I'm using the MDADM version and not DMRAID. It has
  been working fine other than a couple minor issues with clean
  shutdowns that I fixed by tweaking a couple of the scripts under /etc.

  I upgraded to the latest Linux kernel (3.2.0-51) and my FakeRAID
  stopped working, probably because auto-detection failed to see the
  RAID array. Everything works fine with the previous kernel image,
  3.2.0-49.

  Here is /proc/mdstat with the 3.2.0-49 generic kernel image:

  Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] 
  md126 : active raid1 sdb[1] sdc[0]
  976758784 blocks super external:/md127/0 [2/2] [UU]

  md127 : inactive sdb[1](S) sdc[0](S)
  6306 blocks super external:imsm

  The /proc/mdstat file is empty (other than listing personalities) in
  3.2.0-51. Note that the sdb and sdc drives are recognized by 3.2.0-51,
  and their partition tables look reasonable, so I don't see any issues
  with 3.2.0-51 actually seeing the physical drives. The problem appears
  to be that the MD driver doesn't detect the external RAID (aka 'imsm')
  metadata created by Intel fakeraid.

  Here's the additional data requested for new bug reports:

  lsb_release -rd
  Description:    Ubuntu 12.04.2 LTS
  Release:        12.04

  apt-cache policy linux-image-3.2.0-51-generic
  linux-image-3.2.0-51-generic:
    Installed: 3.2.0-51.77
    Candidate: 3.2.0-51.77
    Version table:
   *** 3.2.0-51.77 0
          500 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
          500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
          100 /var/lib/dpkg/status

  FWIW, here's the apt-cache data on the previous kernel where fakeraid
  worked correctly:

  apt-cache policy linux-image-3.2.0-49-generic
  linux-image-3.2.0-49-generic:
    Installed: 3.2.0-49.75
    Candidate: 3.2.0-49.75
    Version table:
   *** 3.2.0-49.75 0
          500 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
          100 /var/lib/dpkg/status

  I will attach the kernel.log for booting 3.2.0-49 and 3.2.0-51. I've
  looked at them and all I see is that 3.2.0-49 'binds' the RAID array
  components and 3.2.0-51 doesn't. Here's a snippet from 3.2.0-49 where
  it starts my RAID. This is absent in 3.2.0-51.

  Aug  6 06:53:46 canopus kernel: [    2.088509] md: bind<sdb>
  Aug  6 06:53:46 canopus kernel: [    2.150987] md: bind<sdc>
  Aug  6 06:53:46 canopus kernel: [    2.151022] md: bind<sdb>
  Aug  6 06:53:46 canopus kernel: [    2.151746] md: raid1 personality registered for level 1
  Aug  6 06:53:46 canopus kernel: [    2.152167] bio: create slab <bio-1> at 1
  Aug  6 06:53:46 canopus kernel: [    2.152239] md/raid1:md126: active with 2 out of 2 mirrors
  Aug  6 06:53:46 canopus kernel: [    2.152249] md126: detected capacity change from 0 to 1000200994816
  Aug  6 06:53:46 canopus kernel: [    2.153111]  md126: p1 p2 p3 p4 < p5 p6 p7 >

  Any suggestions on how to troubleshoot and/or fix this? There's no point bisecting the kernel images given the regression has just appeared in 3.2.0-51 and, AFAIK, there was never a release of a '3.2.0-50' kernel.
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu17.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  bmccann    2893 F.... pulseaudio
   /dev/snd/controlC0:  bmccann    2893 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf7430000 irq 51'
     Mixer name	: 'Realtek ALC892'
     Components	: 'HDA:10ec0892,104384fb,00100302'
     Controls      : 44
     Simple ctrls  : 21
  Card1.Amixer.info:
   Card hw:1 'NVidia'/'HDA NVidia at 0xf7080000 irq 17'
     Mixer name	: 'Nvidia GPU 41 HDMI/DP'
     Components	: 'HDA:10de0041,14622871,00100100'
     Controls      : 24
     Simple ctrls  : 4
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=ce0ec46d-5a8e-4ba4-9049-ed08a896696b
  InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120424)
  MachineType: System manufacturer System Product Name
  MarkForUpload: True
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcEnviron:
   LANGUAGE=
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/tcsh
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-49-generic root=UUID=90c7fb84-e571-4f25-b91a-0a8e9915763f ro quiet splash nomodeset vt.handoff=7
  ProcVersionSignature: Ubuntu 3.2.0-49.75-generic 3.2.46
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-49-generic N/A
   linux-backports-modules-3.2.0-49-generic  N/A
   linux-firmware                            1.79.6
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  StagingDrivers: mei
  Tags:  precise staging
  Uname: Linux 3.2.0-49-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserAsoundrc:
   # ALSA library configuration file
   
   # Include settings that are under the control of asoundconf(1).
   # (To disable these settings, comment out this line.)
   </home/bmccann/.asoundrc.asoundconf>
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  WifiSyslog:
   Aug  8 07:15:09 canopus NetworkManager[1547]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
   Aug  8 07:20:08 canopus NetworkManager[1547]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
  dmi.bios.date: 02/14/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0704
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: P8Z77-V
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0704:bd02/14/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-V:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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