[Bug 1501015] Re: ISST-LTE: Multipath disk is not automatically set as 1st boot device after installation

[Mauricio Faria de Oliveira]

@vorlon

> From the description, I understand this problem is specific to installation 
> in PowerVM mode (PReP boot configuration) with multipath root disk. 
> Is that correct?

That's correct.

> grub-installer will configure a PReP partition when not running in PowerVM mode, 
> and will equally fail to configure the path when the root disk is on a multipath device, 
> but the failure would not affect the system's bootability after install when booting in PowerNV mode.

I'd suspect that petitboot might do the boot device selection differently,
and might eventually end up choosing a boot device if one is not set in NVRAM,
or might use a different NVRAM key/variable for it.

It's possible, as the pseries (powervm) and powernv (opal) platforms are
distinct, thus can do things differently.

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https://bugs.launchpad.net/bugs/1501015

Title:
  ISST-LTE: Multipath disk is not automatically set as 1st boot device
  after installation

Status in powerpc-ibm-utils package in Ubuntu:
  In Progress

Bug description:
  == Comment: #11 - Gary M. Gaydos <gmgaydos at us.ibm.com> - 2015-09-29 14:37:05 ==
  Steps to reproduce:

  Install 15.10 beta 1 ppc little endian using multipath disks (in this case mpatha)
  After the installation is finished no device is set as the first boot device.

  The symptom is the same as launchpad bug 1486022 against 14.04.3.
  Syslog from 1486022 and this bug are different however.  In 1486022 no
  mpath devices are found.  In this bug mpath2a (the installation
  target) has an unknown device type, and the volume group is not found.

  Here's a snippet from the syslog

  cat syslog |grep -a2 -b2 mpatha2
   
  423185-Sep 28 07:42:34 in-target: grub-common is already the newest version.
  423255-Sep 28 07:42:34 in-target: 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  423345:Sep 28 07:42:41 grub-installer: info: Identified partition label for /dev/mapper/mpatha2: loop
  423440-Sep 28 07:42:44 grub-installer: info: Wiping PReP partition /dev/mapper/mpatha1
  423520-Sep 28 07:42:45 in-target: Reading package lists...
  --
  426988-Sep 28 07:42:51 in-target: Creating config file /etc/default/grub with new version^M
  427073-Sep 28 07:42:51 in-target: Installing for powerpc-ieee1275 platform.^M
  427144:Sep 28 07:42:55 in-target: grub-install: warning: unknown device type mpatha2^M
  427224-Sep 28 07:42:55 in-target: .^M
  427255-Sep 28 07:42:56 in-target: Installation finished. No error reported.^M
  --
  459265-Sep 28 07:45:40 main-menu[843]: (process:73364): File descriptor 5 (/dev/hvc0) leaked on lvdisplay invocation. Parent PID 74098: /bin/sh
  459402-Sep 28 07:45:40 main-menu[843]: (process:73364): File descriptor 6 (/dev/hvc0) leaked on lvdisplay invocation. Parent PID 74098: /bin/sh
  459539:Sep 28 07:45:40 main-menu[843]: (process:73364):   Volume group "mpatha2" not found
  459623:Sep 28 07:45:40 main-menu[843]: (process:73364):   Cannot process volume group mpatha2
  459710-Sep 28 07:45:40 main-menu[843]: (process:73364): umount: can't umount /target/proc /sys: No such file or directory
  459825-Sep 28 07:45:40 main-menu[843]: INFO: Menu item 'finish-install' selected

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