openstack/ironic
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Merge "[doc] Bootloader reinstallations on Software RAID"

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Zuul 2021-07-05 15:04:50 +00:00 committed by Gerrit Code Review
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doc/source/admin/raid.rst
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@ -408,6 +408,15 @@ There are certain limitations to be aware of:
are installed or the bootloader is updated, so measures to keep these
partitions in sync need to be taken.
* In BIOS mode, the Ironic Python Agent installs the boot loader onto all
disks. While nothing is required for kernel or grub package updates,
re-installing the bootloader on one disk, e.g. during a disk replacement,
may require to re-install the bootloader on all disks. Otherwise, there
is a risk of an incompatibility of the grub components stored on the device
(i.e. stage1/boot.img in the MBR and stage1.5/core.img in the MBR gap) with
the ones stored in /boot (stage2). This incompatibility can render the node
unbootable if the wrong disk is selected for booting.
Image requirements
------------------