Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
> -----Original Message----- > From: drbd-user-bounces at lists.linbit.com > [mailto:drbd-user-bounces at lists.linbit.com] On Behalf Of Lars > Ellenberg > Sent: 15 October 2009 16:26 > To: drbd-user at lists.linbit.com > Subject: Re: [DRBD-user] Kernel oops on create-md > > On Thu, Oct 15, 2009 at 03:17:40PM +0100, Stef Morrell wrote: > > Hello, > > > > > -----Original Message----- > > > From: drbd-user-bounces at lists.linbit.com > > > [mailto:drbd-user-bounces at lists.linbit.com] On Behalf Of Lars > > > Ellenberg > > > Sent: 15 October 2009 14:25 > > > To: drbd-user at lists.linbit.com > > > Subject: Re: [DRBD-user] Kernel oops on create-md > > > > > > On Thu, Oct 15, 2009 at 02:10:54PM +0100, Stef Morrell wrote: > > > > Hello, > > > > > > > > I'm attempting to run drbd 8.3.4 against Linux 2.31.4. I'm > > > making the > > > > (possibly incorrect) assumption that from the Changelog, > > > > > > > > 8.3.3 > > > > * Following Linux upstream changes 2.6.31 > > > > > > > > that I'm ok on the 2.6.31 kernel series. > > > > > > > > I've patched the kernel directly and can see from > > > > > > > > root [ /sources/drbd-8.3.4 ]# cat /proc/drbd > > > > version: 8.3.4 (api:88/proto:86-91) > > > > GIT-hash: 70a645ae080411c87b4482a135847d69dc90a6a2 build by > > > > root at atuin-1, 2009-10-15 11:36:31 > > > > > > > > that the patch has been applied correctly. > > > > > > Nope. > > > > > > > My problem is that when I attempt to create the > metadata I get a > > > > kernel Oops, output of which is attached. I've also included my > > > > drbd.conf, very basic, but there you have it. > > > > > > > > Problem is 100% reproduceable both on this machine and it's > > > > (identical) counterpart which will (eventually) form the > > > second node in the cluster. > > > > > > > > I've wondered if it is a kernel compatibility problem, > > > > > > Yes. > > > > > > > I wonder if anyone can provide some advice? > > > > > > You patched it wrong. Sorry. > > > > Do you mean that 2.6.31.4 isn't supported at all, or that > I've made a > > mistake in the patching process itself? (Log of patching process > > attached). If it is the kernel version, what is actually the latest > > which drbd supports? > > I mean you patched it wrong. > > > > If you get any compile warnings during the module build, > you got it > > > wrong again. So try again. > > > > Yes. One compile warning - does seem to fit with the oops. > > > > drivers/block/drbd/drbd_nl.c: In function 'drbd_nl_init': > > drivers/block/drbd/drbd_nl.c:2380: warning: passing argument 3 of > > 'cn_add_callback' from incompatible pointer type > > yep. > > > root [ /sources/drbd-8.3.4 ]# make KDIR=/sources/linux-2.6.31.4 > > kernel-patch > > forget about that. > _that_ is not supported. > sometimes it works, sometime it does not. > if it does not work, it does not work. > > it may help if you do a "normal" out-of-tree module build, > before you generate the patch. there is some automatic > adjustment of compatibility ifdefs going on. This method works a treat. Building a standard kernel module first made the following change in drbd_config.h root [ /sources/drbd-8.3.4/drbd/linux ]# diff drbd_config.h drbd_config.h.orig 102c102 < //#define KERNEL_HAS_CN_SKB_PARMS --- > #define KERNEL_HAS_CN_SKB_PARMS Following that, a newly made kernel patch worked perfectly fine. Many thanks. Stef