Fallback entry in GRUB for RAID systems
GRUB supports a "fallback" entry that is booted if the default kernel is not available or bootable.
In short: that's exactly what you want on a system with RAID (at least RAID1, not sure if other RAID types are supported.
Unfortunately you have to add this fallback manually. Instead it should be auto-created by perl-bootloader.
The generated menu.lst should look like this on a RAID1 system:
kernel /boot/vmlinuz-188.8.131.52-0.1-default root=/dev/md1 vga=0x317
title openSUSE 11.1 - second harddisk
kernel /boot/vmlinuz-184.108.40.206-0.1-default root=/dev/md1 vga=0x317 fallback_booted_from_sdb
# [... failsave section skipped ...]
- the "fallback 1" line
- the section for the second harddisk - except the "root (hd1,4)" instead of hd0,4 it is an exact copy of the first section
Optional: Add another section for failsave booting from the second harddisk.
Oh, and if someone runs a RAID with 3 harddisks, I'd like to have a menu.lst entry for each of them - even if only the first and second are automatically booted by GRUB ;-)
Imagine a system with RAID1 that has a major failure on the first harddisk or just got the first harddisk replaced after a failure.
In the current state the system will not boot (at least without editing menu.lst), with this feature implemented it will boot automatically.
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Last change: 5 years ago