[Ocfs2-users] ocfs2_dlmfs

[Sunil Mushran]

The error suggests the chksum of dlmlock in ocfs_dlm.ko not match
the expected one in ocfs2_dlmfs.ko. This should not happen if you are
building both as part of the same build.

Useful commands to debug:

# nm ocfs2_dlm.ko | grep __crc_dlmlock
dce6db76 A __crc_dlmlock
# modprobe --dump-modversions ocfs2_dlmfs.ko | grep dlmlock
0xdce6db76      dlmlock

Notice the matching checksums. The only bummer is that the version of 
modprobe
shipped with most distros does not appear to have --dump-modversions.
I could only find it in in one shipped with fc6.
ftp://mirrors.kernel.org/fedora/core/6/source/SRPMS/module-init-tools-3.3-0.pre1.4.17.src.rpm

Randy Ramsdell wrote:
> Sunil Mushran wrote:
>   
>> # find /lib/modules/`uname -r` -name \*ocfs\*
>>
>> What is the output of the above? The error indicates a mismatch
>> between ocfs2_dlm.ko and ocfs2_dlmfs.ko.
>>
>>     
> I provided the output of locate which essentially does the same thing
> and I also including a long listing of ls to show that the modules were
> actually rebuilt today.
>
> ls -l `locate ocfs2` |grep modules |grep 2.6.16.27-0.9-smp
>
> -rw-r--r--  1 root root  970513 Apr 18 09:11
> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/cluster/ocfs2_nodemanager.ko
> -rw-r--r--  1 root root 1932116 Apr 18 09:11
> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/dlm/ocfs2_dlm.ko
> -rw-r--r--  1 root root  361897 Apr 18 09:11
> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/dlm/ocfs2_dlmfs.ko
> -rw-r--r--  1 root root 4580126 Apr 18 09:11
> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/ocfs2.ko
>
>
>
> find /lib/modules/`uname -r` -name \*ocfs\*
>
> /lib/modules/2.6.16.27-0.9-smp/extra/ocfs2
> /lib/modules/2.6.16.27-0.9-smp/kernel/fs/ocfs2
> /lib/modules/2.6.16.27-0.9-smp/kernel/fs/ocfs2/cluster/ocfs2_user_heartbeat.ko
> <---- I really don't know what this module is for.
> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2
> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/dlm/ocfs2_dlm.ko
> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/dlm/ocfs2_dlmfs.ko
> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/cluster/ocfs2_nodemanager.ko
> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/ocfs2.ko
>
>
>   
>> Randy Ramsdell wrote:
>>     
>>>     Man I really can't believe all the issues I have faced getting this
>>> to ocfs2 v.1.2.5 to work and I really APPRECIATE all the input so far.
>>> Does anyone else compile these packages? I do remember that someone
>>> saying  to upgrade the kernel to fix ocfs2 issues or upgrade the
>>> drivers. Using a new kernel to upgrade a driver seems way too excessive
>>> when a simple module upgrade would take care of that.
>>>
>>> Here is a new issue I am just found on one of the nodes.
>>> Any thoughts?
>>>
>>> /etc/init.d/o2cb start
>>> Mounting configfs filesystem at /sys/kernel/config: OK
>>> Loading module "ocfs2_dlmfs": Unable to load module "ocfs2_dlmfs"
>>> Failed
>>>
>>> modprobe ocfs2_dlmfs
>>> FATAL: Error inserting ocfs2_dlmfs
>>> (/lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/dlm/ocfs2_dlmfs.ko):
>>> Unknown symbol in module, or unknown parameter (see dmesg)
>>>
>>> dmesg
>>> ocfs2_dlmfs: module not supported by Novell, setting U taint flag.
>>> ocfs2_dlmfs: disagrees about version of symbol dlmlock
>>> ocfs2_dlmfs: Unknown symbol dlmlock
>>> ocfs2_dlmfs: disagrees about version of symbol dlm_unregister_domain
>>> ocfs2_dlmfs: Unknown symbol dlm_unregister_domain
>>> ocfs2_dlmfs: disagrees about version of symbol dlm_register_domain
>>> ocfs2_dlmfs: Unknown symbol dlm_register_domain
>>> ocfs2_dlmfs: disagrees about version of symbol dlmunlock
>>> ocfs2_dlmfs: Unknown symbol dlmunlock
>>>
>>> lsmod:
>>>
>>> jbd                    62880  1 ocfs2
>>> ocfs2_dlm             163080  1 ocfs2
>>> ocfs2_nodemanager     139584  2 ocfs2,ocfs2_dlm
>>> configfs               27536  3 ocfs2,ocfs2_nodemanager
>>>
>>>
>>> As you can see from the dates, I built this again this mourning.
>>>
>>> ls -l `locate ocfs2` |grep modules |grep 2.6.16.27-0.9-smp
>>>
>>> -rw-r--r--  1 root root  970513 Apr 18 09:11
>>> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/cluster/ocfs2_nodemanager.ko
>>>
>>> -rw-r--r--  1 root root 1932116 Apr 18 09:11
>>> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/dlm/ocfs2_dlm.ko
>>> -rw-r--r--  1 root root  361897 Apr 18 09:11
>>> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/dlm/ocfs2_dlmfs.ko
>>> -rw-r--r--  1 root root 4580126 Apr 18 09:11
>>> /lib/modules/2.6.16.27-0.9-smp/updates/ocfs2/ocfs2.ko
>>>
>>>
>>>
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>>> Ocfs2-users at oss.oracle.com
>>> http://oss.oracle.com/mailman/listinfo/ocfs2-users
>>>   
>>>       
>
>
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