On Tue, Apr 14, 2009 at 6:20 AM, Jerry Amundson <jamundso at gmail.com> wrote: > On Mon, Apr 13, 2009 at 5:08 PM, Akemi Yagi <amyagi at gmail.com> wrote: >> I suppose, at some point in time, you had >> kmod-drbd-xen-8.0.12-1.2.6.18_92.1.6.el5 which installed >> /lib/modules/2.6.18-92.1.6.el5xen/extra/drbd82/drbd.ko. [expected >> behavior] >> >> When kmod-drbd82-xen-8.2.6-2 was installed later on, it installed >> /lib/modules/2.6.18-92.1.13.el5xen/extra/drbd82/drbd.ko and created >> symlinks through the action of /sbin/weak-modules. Kernels that >> existed at that moment now point to the drbd.ko in >> /lib/modules/2.6.18-92.1.13.el5xen. [expected behavior] > > Yes, I'm with you so far. > >> When the kernel was updated to -128 (upon 5.3 update), weak-modules >> was supposed to do the same (create a symlink to >> 2.6.18-92.1.13.el5xen). But instead, it made a link to >> 2.6.18-92.1.6.el5xen. This is the part I don't understand. [???] > > It seems related to installation order. With the kernel not yet > installed, weak-modules has nothing to pick up in /lib/modules for the > new kernel... > > [root at xenb ~]# rpm -qa --last | grep xen > xen-3.0.3-80.el5_3.2 Mon 13 Apr 2009 01:58:11 PM CDT > kernel-xen-2.6.18-128.1.6.el5 Mon 13 Apr 2009 01:57:51 PM CDT > xen-libs-3.0.3-80.el5_3.2 Mon 13 Apr 2009 01:57:26 PM CDT > kmod-drbd82-xen-8.2.6-2 Thu 19 Mar 2009 02:41:55 PM CDT > kernel-xen-2.6.18-92.1.22.el5 Thu 19 Mar 2009 02:41:39 PM CDT > kmod-drbd82-xen-8.2.6-1.2.6.18_92.1.10.el5 Fri 15 Aug 2008 03:19:31 PM CDT > kernel-xen-2.6.18-92.1.10.el5 Fri 15 Aug 2008 03:19:09 PM CDT Yes, that is the normal order. /sbin/weak-module is run during the kernel installation as you can see in the script (some messages ago). It surveys installed modules (not kernel built-in) and sets up symlinks for those that are kABI compatible. When kernel-xen-2.6.18-128.1.6 was installed on your system, it was supposed to make a link to the drbd.ko in /lib/modules/2.6.18-92.1.13.el5xen which already existed at that time. But it didn't. Very strange. Akemi