Red Hat Bugzilla – Bug 832734
Grub2 fails to install (from Anaconda) onto a RAID-1
Last modified: 2013-07-31 14:27:04 EDT
Description of problem:
During installation, Anaconda offers to install Grub2 on the RAID-1 containing /boot. However, it pops
Version-Release number of selected component (if applicable):
Fedora 17 x86-64 release media
Steps to Reproduce:
1. Create a system with partitions, including a RAID-1 /boot (no LVM)
2. Select /dev/md0 as the boot device
3. At the end of installation, Anaconda says "something went wrong in installing your boot loader, the system may be unbootable"
4. The system is, indeed, unbootable.
Boot device is where the bootsector goes. It has to be real disk, not RAID-1 virtual one.
Reassigning to anaconda. It shouldn't offer the possibility of using a virtual device for the boot loader.
It seems odd that it should not be able to install on a RAID-1, which is just the disk replicated identically across N disks (thus satisfying the requirement of actually being able to boot from any of the disks), but perhaps Grub2 is just plain broken that way.
mdraid 1.1 and 1.2 are not. They are shifted by few sectors. On mdraid 1.0 and mdraid 0.9x you can declare mdX as BIOS-visible disk by manually specifying it in device.map. But the whole concept of treating one member of RAID-1 as if it was complete disk is broken.
This was working. Anaconda is smart enough to install to each of the RAID-1 members. Please attach the logs from /tmp/*log to this bug as individual text/plain files.
Too late; the machine has already been wiped and put into production using BIOS fakeraid.
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