grub-reboot or grub-set-default does not work as expected

[smoser]

We have a power8 powerNV system showing bug 1616949 and wanted to basically keep it booting into the working kernel using grub-set-default.

Unfortunately petitboot does not seem to understand this feature.
I'm using boot-kernel to set this all up.

$ sudo ./boot-kernel  4.4.0-36-generic
selected /boot/vmlinux-4.4.0-36-generic. entry: Advanced options for Ubuntu>Ubuntu, with Linux 4.4.0-36-generic

$ head -n 4 /boot/grub/grubenv | sed 's,####\+$,###...\n,'
# GRUB Environment Block
saved_entry=Advanced options for Ubuntu>Ubuntu, with Linux 4.4.0-36-generic
next_entry=Advanced options for Ubuntu>Ubuntu, with Linux 4.4.0-36-generic
###...

$ sudo reboot

The system comes back up in the 4.4.0-45-generic kernel.

See the attached grub.cfg and grubenv for info:

• grub.cfg
• grubenv

[sammj]

grub-reboot and grub-set-default both appear to work properly with a build of master; what version of Petitboot are you using? A few fixups went into the grub parsing code a little while ago, namely 01e104d, perhaps this issue is fixed by them.

[smoser]

I thought you might ask that, i was being lazy. This system is:

version: FW840.11 (SV840_087)
model:   8247-22L

I rebooted and stopped it at petitboot prompt, where it shows: dev.20151111
So I suspect i need new firmware. Is there a released firmware with that? I'm under the impression that firmware upgrade is the only way to get new petitboot, right?

[smoser]

OK, I just upgraded to latest available 840 firmware.
Petitboot now shows dev.20160602.

$ sudo update_flash -d
Current firwmare version :
  P side    : FW840.11 (SV840_087)
  T side    : FW840.40 (SV840_147)
  Boot side : FW840.40 (SV840_147)

I use boot-kernel as above, /boot/grub/grubenv shows:

$ sed 's,####\+$,###...\n,' /boot/grub/grubenv
# GRUB Environment Block
saved_entry=Advanced options for Ubuntu>Ubuntu, with Linux 4.4.0-36-generic
next_entry=Advanced options for Ubuntu>Ubuntu, with Linux 4.4.0-34-generic
###...

reboot, and watch the petitboot prompt say "booting Ubuntu in ...".

Then ssh in, and see:

$ uname -r
4.4.0-45-generic
$ sed 's,####\+$,###...\n,' /boot/grub/grubenv
# GRUB Environment Block
saved_entry=Advanced options for Ubuntu>Ubuntu, with Linux 4.4.0-36-generic
next_entry=
###...

So it seems still not working.

[ghost]

Scott Moser notifications@github.com writes:

OK, I just upgraded to latest available 840 firmware.
Petitboot now shows dev.20160602.

$ sudo update_flash -d
Current firwmare version :
  P side    : FW840.11 (SV840_087)
  T side    : FW840.40 (SV840_147)
  Boot side : FW840.40 (SV840_147)

The soon to be released 860.10 for those systems will have the fix:
git describe --contains 01e104d
v1.0.0~30

we're on an older branch for FW840 though, so it's probably not fixed in
any of those builds (maybe we should be less conservative with petitboot updates?)

Stewart Smith
OPAL Architect, IBM.