It turns out I was adding the web100 patch (http://www.web100.org) to
the 2.6.21 kernel and that's what causes the symbol resolving problem
below. Adding the corresponding version of the web100 patch to the
2.6.20 kernel makes this problem appear there as well. On fresh
versions of the kernel, this problem does not occur. At the moment,
it's not possible to have a current kernel that contains both drbd
and web100.
On a 64-bit Gentoo system with Gentoo's 2.6.21 kernel, drbd 8.0.2/3>drbd. Source was compiled with Gentoo gcc-4.1.2, glibc-2.5-r3
complains when I try to load the module:
[ 134.141363] drbd: Unknown symbol cn_fini
[ 134.141399] drbd: Unknown symbol cn_init
It works fine when I compile it and load in the previous kernel
version, 2.6.20 and the symbols are present in the map file
./System.map-genkernel-x86_64-2.6.21-gentoo-r2:ffffffff802935aa t cn_fini
./System.map-genkernel-x86_64-2.6.21-gentoo-r2:ffffffff8029362a t cn_init
I am c'cing the kernel mailing list because this appears to be a
problem with how any module accesses symbols in the kernel, not just