Every time I commission the PPC host we have in our CI I always get a GPT partitioning table using MAAS 2.4.2+. Looking through the source code it appears GPT is always set when creating a new partitioning table[1] and when generating the preseed[2] due to the bios_boot_method being powernv. I'm not sure how msdos got set but I believe the partition table type is a red herring.
The issue appears to be that Curtin is not wiping the PReP partition(/dev/sda1). If I chroot into the deployment environment and try to install GRUB with grub-install --target=powerpc-ieee1275 /dev/sda1 --no-nvram it fails. If I wipe /dev/sda1 first GRUB installation succeeds. I can then retry deployment and deployment works fine. I suspect the issue has to do with a newer version of GRUB being installed. Previous versions of GRUB must of been similar enough that the PReP partition didn't have to be fully wiped before installing. @Ryan, as you mentioned Curtin has a bug where it is not fully wiping the PReP partition which appears to be the root cause of this bug. It may be worth modifying Curtin to always wipe any partition with the 'prep' flag set regardless of what wipe is set to to ensure this doesn't happen in other environments. [1] https://git.launchpad.net/maas/tree/src/maasserver/models/partitiontable.py#n152 [2] https://git.launchpad.net/maas/tree/src/maasserver/preseed_storage.py#n254 ** Changed in: curtin Status: Incomplete => Confirmed ** Changed in: grub2 (Ubuntu) Status: New => Invalid ** Changed in: maas Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1800153 Title: [2.5] Failed to deploy ppc64el when partition table is GPT To manage notifications about this bug go to: https://bugs.launchpad.net/curtin/+bug/1800153/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
