Public bug reported:
== Comment: #0 - Mauricio Faria De Oliveira - 2017-01-12 05:22:08 ==
---Problem Description---
On ppc64el, the grub-installer script attempts to detect which PReP partition
is in the same disk as of the installed system, in order to install grub into
it.
This check is not working properly for NVMe devices, and needs an update.
It might result in overwriting the PReP partition of another disk, possibly
another Linux distro/version, which is unrelated to the current installation.
Patches for Xenial and Zesty are attached.
Problem example:
---
- PReP partition actually is '/dev/nvme1n1p1'
- PReP partition detected is '/dev/sda1'
~ # /usr/lib/grub-installer/prep-bootdev -l
/dev/sda1
/dev/nvme1n1p1
/dev/nvme0n1p1
~ # grep grub-install /var/log/syslog
...
Jan 11 22:17:25 main-menu[518]: INFO: Menu item 'grub-installer' selected
Jan 11 22:17:25 grub-installer: info: architecture: ppc64el/chrp_ibm
Jan 11 22:17:29 grub-installer: info: Identified partition label for
/dev/nvme1n1p2: gpt
Jan 11 22:17:29 grub-installer: info: Wiping PReP partition /dev/sda1
...
Jan 11 22:17:33 grub-installer: info: Running chroot /target grub-install
--force "/dev/sda1"
...
Jan 11 22:17:33 grub-installer: info: grub-install ran successfully
~ # in-target ofpathname /dev/sda1
~ # in-target nvram --print-config=boot-device
~ # tail -n2 /var/log/syslog
... in-target: /pci@800000020000015/pci1014,034A@0/sas/disk@5000c50067b1166b
... in-target: /pci@800000020000015/pci1014,034A@0/sas/disk@5000c50067b1166b
Patch applied:
---
~ # grep grub-installer /var/log/syslog
...
Jan 11 23:59:25 main-menu[518]: INFO: Menu item 'grub-installer' selected
Jan 11 23:59:25 grub-installer: info: architecture: ppc64el/chrp_ibm
Jan 11 23:59:27 grub-installer: info: Identified partition label for
/dev/nvme1n1p2: gpt
Jan 11 23:59:27 grub-installer: info: Wiping PReP partition /dev/nvme1n1p1
...
Jan 11 23:59:30 grub-installer: info: Running chroot /target grub-install
--force "/dev/nvme1n1p1"
...
Jan 11 23:59:31 grub-installer: info: grub-install ran successfully
~ # in-target nvram --print-config=boot-device
~ # tail -n1 /var/log/syslog
... in-target: /pci@800000020000028/pci1bb1,121@0/namespace@1
After reboot of installation done:
0 > printenv boot-device
-------------- Partition: common -------- Signature: 0x70 ---------------
boot-device /pci@800000020000028/pci1bb1,121@0/namespace@1
== Comment: #1 - Mauricio Faria De Oliveira <mauri...@br.ibm.com> - 2017-01-12
05:24:08 ==
Patch for Xenial
== Comment: #2 - Mauricio Faria De Oliveira <mauri...@br.ibm.com> - 2017-01-12
05:24:26 ==
Patch for Zesty.
** Affects: debian-installer (Ubuntu)
Importance: Undecided
Assignee: Taco Screen team (taco-screen-team)
Status: New
** Tags: architecture-ppc64le bugnameltc-150508 severity-high
targetmilestone-inin16042
** Tags added: architecture-ppc64le bugnameltc-150508 severity-high
targetmilestone-inin16042
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https://bugs.launchpad.net/bugs/1656048
Title:
grub-installer might not install to the PReP partition of NVMe disks
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