[Ocfs2-users] OCFS2 Installation woes

[Peter Sylvester]

Here is some feedback on my OCFS2 installation...

You were correct about selinux.  I was able to disable it by specifying 
"SELINUX=disabled" in /etc/selinux/config and rebooting. I was then able 
to run the console tool correctly.

I did stumble on another issue, though.  It appears that the console 
tool hard codes the cluster name as "ocfs2", but the cluster service 
seems to be looking for cluster "racdb", and errors out when attempting 
to bring online.  I hand edited the cluster.conf file and changed the 
cluster name to "racdb" and everything then appeared to work.

Also, I noticed that the cluster.conf configuration is a bit different 
from that shown in the User's Guide documentation.

I was able to mkfs.ocfs2 and mount the partition and it appears to 
work.  I'll plan on doing some testing next week to stress it out a bit.

--Peter

Sunil Mushran wrote:
> You appear to have selinux enabled which is missing policies for 
> configfs/ocfs2.
> We are still investigating the issue, but one quick solution would be 
> to disable selinux. :)
>
> Peter Sylvester wrote:
>
>> I've got a fresh RHEL AS 4-U2 installation on a Dell PE2850 server.
>>
>> I downloaded and installed the latest RPMs:
>> ocfs2-2.6.9-22.ELsmp-1.0.7-1.i686.rpm
>> ocfs2-tools-1.0.2-1.i386.rpm
>> ocfs2console-1.0.2-1.i386.rpm
>>
>> I was able to start the console, but when I try to run 
>> cluster->configure_nodes, I get the following error message:
>> Could not start cluster stack. This must be resolved before any OCFS2 
>> filesystem can be mounted.
>>
>> I tried to start the service via the command line:
>> /etc/init.d/o2cb load
>>
>> And got the error:
>> Mounting configfs filesystem at /config: mount: block device configfs 
>> is write-protected, mounting read-only
>> mount: cannot mount block device configfs read-only
>> Unable to mount configfs filesystem
>> Failed
>>
>> I tried mounting /config myself via the following, which worked (not 
>> sure if thats how it *should* be done though):
>> mount -t configfs none /config
>>
>> Now o2cb load puts out the following message:
>> Loading module "ocfs2_nodemanager": Unable to load module 
>> "ocfs2_nodemanager"
>> Failed
>>
>> And an o2cb status shows:
>> Module "configfs": Loaded
>> Filesystem "configfs": Mounted
>> Module "ocfs2_nodemanager": Not loaded
>> Module "ocfs2_dlm": Not loaded
>> Module "ocfs2_dlmfs": Not loaded
>> Filesystem "ocfs2_dlmfs": Not mounted
>>
>> I tried creating a /etc/ocfs2/cluster.conf myself (using vi), but it 
>> did not seem to have any effect.
>> I tried a fresh reboot but that did not seem to change anything.
>> Also note that all commands were run as root, and I am just trying to 
>> get a single node with local disk working.
>>
>> There were some error messages reported in /var/log/messages, of the 
>> form:
>> Oct 13 17:02:56 dblinux1 kernel: SELinux: initialized (dev configfs, 
>> type configfs), not configured for labeling
>> Oct 13 17:02:56 dblinux1 kernel: audit(1129237376.191:5): avc:  
>> denied  { mount } for  pid=14922 comm="mount" name="/" dev=configfs 
>> ino=70286 scontext=root:system_r:initrc_t 
>> tcontext=system_u:object_r:unlabeled_t tclass=filesystem
>>
>> Also have some errors of form:
>> Oct 13 18:03:49 dblinux1 dbus: Can't send to audit system: USER_AVC 
>> pid=2587 uid=81 loginuid=-1 message=avc:  denied  { send_msg } for  
>> scontext=user_u:system_r:unconfined_t 
>> tcontext=user_u:system_r:initrc_t tclass=dbus
>>
>> And this one:
>> Oct 13 17:46:36 dblinux1 kernel: OCFS2 Node Manager 1.0.7 Wed Oct 12 
>> 13:18:42 PDT 2005 (build 6cb35edfedddf6b4d606b95f2579cb39)
>> Oct 13 17:46:36 dblinux1 kernel: audit(1129239996.953:8): avc:  
>> denied  { mount } for  pid=3903 comm="modprobe" name="/" dev=configfs 
>> ino=10949 scontext=root:system_r:initrc_t 
>> tcontext=system_u:object_r:unlabeled_t tclass=filesystem
>> Oct 13 17:46:36 dblinux1 kernel: nodemanager: Registration returned -13
>> Oct 13 17:46:36 dblinux1 modprobe: FATAL: Error inserting 
>> ocfs2_nodemanager 
>> (/lib/modules/2.6.9-22.ELsmp/kernel/fs/ocfs2/ocfs2_nodemanager.ko): 
>> Permission denied
>>
>> Any clues as to what I should do I try from here????
>>
>> thanks,
>> --Peter
>>
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>