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 are installed or the bootloader is updated, so measures to keep these
partitions in sync need to be taken. 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 Image requirements
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