[DRBD-user] Re: drbd 8.0.2/3 doesn't load under kernel 2.6.21

Maurice Volaski mvolaski at aecom.yu.edu
Wed Aug 1 22:21:29 CEST 2007

I'm making an assumption that depmod is somehow to blame and have 
logged this as a kernel bug, 

>>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
>>>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
>>  >drbd. Source was compiled with Gentoo gcc-4.1.2, glibc-2.5-r3


Maurice Volaski, mvolaski at aecom.yu.edu
Computing Support, Rose F. Kennedy Center
Albert Einstein College of Medicine of Yeshiva University

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