ironic-python-agent/software-raid-raid-ESPs-25a2aa117b99620a.yaml at master - ironic-python-agent - OpenDev: Free Software Needs Free Tools

openstack/ironic-python-agent

Arne Wiebalck c2d04dc156 Software RAID: RAID the ESPs

For software RAID in UEFI mode, we create ESPs on all holder disks
and copy the bootloader there. Since there is no mechanism to keep
the ESPs in sync, e.g. on kernel upgrades or when kernel parameters
are updated, the ESPs will get out of sync eventually. This may lead
to a situation where a node boots with outdated parameters or does
not have any of the installed kernels in the boot menu anymore.
This change proposes to RAID the ESPs. While the UEFI firmware will
find an ESP partition (one leg of the mirror), the node will see
an md device and all subsequent updates will go to all member disks.

Also, remove the source ESP after copying in order to avoid mount
confusion (same UUID!).

Story: #2008745
Task: #42103
Change-Id: I9078ef37f1e94382c645ae98ce724ac9ed87c287

2021-04-16 14:40:28 +02:00

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 fixes:
   - |
     Mirrors the previously disconnected EFI system partitions (ESPs) in UEFI
     software RAID setups. Disconnected ESPs can lead to nodes booting with
     outdated kernel parameters or the UEFI firmware not finding bootable
     kernels at all.