Public bug reported:
I have experienced a failure to install Ubuntu natty, using the d-i
(alternate, not ubiquity) installer.
The actual failure occurs when the installer executes grub-install.
Debugging a bit shows that the actual failing command is "grub-probe -t
fs /boot/grub". Debugging a bit more shows that /boot/grub is in my
situation, located on /dev/md0, and the failure involves grub-probe
attempting to execute /dev/md/0 (note: md/0, not md0) which does not
exist during the installer run.
A further point of interest found by looking into the grub code is that
grub only ends up looking for md/0 rather than md0 if the array is using
a version 1 md superblock - i.e. my problem is worked around by using a
version 0.90 md superblock.
But, there seems to be some other wrinkle involved that I have not yet
diagnosed, as the above problems were experienced on real hardware,
using a partman-auto-raid recipe, whilst attempting a kvm test install
without the preseed resulted in the md/0 symlink being created. More
info to come...
Other notes - the following bugs may be related to some degree:
bug 713874
bug 789226
bug 701351
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/803749
Title:
grub-install fails during d-i installation when /boot/grub is located
on md raid device
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