[CentOS-devel] no drbd after update to 5.3

[Jerry Amundson]

On Mon, Apr 13, 2009 at 5:08 PM, Akemi Yagi <amyagi at gmail.com> wrote:
> On Mon, Apr 13, 2009 at 2:09 PM, Jerry Amundson <jamundso at gmail.com> wrote:
>> On Mon, Apr 13, 2009 at 4:05 PM, Akemi Yagi <amyagi at gmail.com> wrote:
>
>>>> [root at xenb ~]# rpm -qa kernel\* | sort
>>>> kernel-headers-2.6.18-128.1.6.el5
>>>> kernel-xen-2.6.18-128.1.6.el5
>>>> kernel-xen-2.6.18-92.1.10.el5
>>>> kernel-xen-2.6.18-92.1.22.el5
>>>> [root at xenb ~]# rpm -qa \*drbd\* | sort
>>>> drbd82-8.2.6-1.el5.centos
>>>> kmod-drbd82-xen-8.2.6-1.2.6.18_92.1.10.el5
>>>> kmod-drbd82-xen-8.2.6-2
>>>> [root at xenb ~]# ls -l `find /lib/modules -name drbd.ko`
>>>> lrwxrwxrwx 1 root root      54 Apr 13 13:57
>>>> /lib/modules/2.6.18-128.1.6.el5xen/weak-updates/drbd82/drbd.ko ->
>>>> /lib/modules/2.6.18-92.1.6.el5xen/extra/drbd82/drbd.ko
>>>
>>> This is not right.  kmod-drbd82-xen-8.2.6-2 is supposed to install:
>>>
>>> /lib/modules/2.6.18-92.1.13.el5xen/extra/drbd82/drbd.ko
>>>
>>> and the symlink should look like:
>>>
>>> /lib/modules/2.6.18-128.1.6.el5xen/weak-updates/drbd82/drbd.ko ->
>>> /lib/modules/2.6.18-92.1.13.el5xen/extra/drbd82/drbd.ko
>>>
>>> Could you show us the output from:
>>>
>>> rpm -ql kmod-drbd82-xen
>>>
>>> rpm -q --scripts kmod-drbd82-xen
>>
>> [root at xenb ~]# rpm -ql kmod-drbd82-xen
>> /lib/modules/2.6.18-92.1.10.el5xen/extra/drbd82/drbd.ko
>> /lib/modules/2.6.18-92.1.13.el5xen
>> /lib/modules/2.6.18-92.1.13.el5xen/extra
>> /lib/modules/2.6.18-92.1.13.el5xen/extra/drbd82
>> /lib/modules/2.6.18-92.1.13.el5xen/extra/drbd82/drbd.ko
>
> 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

jerry