With the current git tree (2.6.30-git16), the root partition is not found. I am using LVM2 and the root partition is one of the logical volumes. After a git bisect run, it appears that the first bad commit is the following:
Author: Ingo Molnar <email@example.com>
Date: Mon Jun 15 11:35:01 2009 +0200
perf_counter, x86: Improve interactions with fast-gup
This bug is solved in 2.6.31-rc1.
On Tuesday 30 June 2009, François Valenduc wrote:
> Rafael J. Wysocki a écrit :
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > The following bug entry is on the current list of known regressions
> > from 2.6.30. Please verify if it still should be listed and let me know
> > (either way).
> > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=13592
> > Subject : Root partition is not found
> > Submitter : François Valenduc <firstname.lastname@example.org>
> > Date : 2009-06-21 08:42 (8 days old)
> In fact, this problem is already solved in 2.6.31-rc1.