[Ocfs2-users] Getting Started with ocfs2

[Martin J. Evans]

On Wed, 2006-10-11 at 22:50 +0100, Martin J. Evans wrote:
> On Wed, 2006-10-11 at 10:16 -0700, Sunil Mushran wrote:
> > 1. Do "/etc/init.d/o2cb load"
> > Appears you have hand loaded the modules. Use the script. It needs
> > to do some mounting too.
> 
> [root at db ~]# /etc/init.d/o2cb.init  load
> Mounting configfs filesystem at /sys/kernel/config: OK
> Loading module "ocfs2_dlmfs": OK
> Mounting ocfs2_dlmfs filesystem at /dlm: OK
> 
> > 2. Run "ocfs2console". No -N option.
> 
> fine but on selecting cluster/configure nodes I still get dialogue
> saying "Could not query the state of the cluster stack. This must be
> resolved before any OCFS2 filesystemcan be mounted."
> 
> > Which distro are you on?
> 
> Fedora Core release 5 (Bordeaux)
> 
> with ocfs2 tools installed by downloading the source and the usual
> configure and make (version ocfs2-tools-1.2.1.tar.gz) because the rpms I
> saw seemed ages (years) out of date.
> 
> I get a bit futher if I create an /etc/ocfs2/cluster.conf
> containing:
> 
> cluster:
>         node_count = 0
>         name = ocfs2
> 
> in that I can hit cluster/configure but when I enter the information
> into the dialogue and click apply I get:
> 
> "o2cb_ctl: Unable to access cluster service while creating node. Could
> not add node xxx."
> 
> I must have missed this somewhere as all I read was run ocfs2console and
> it will create the cluster.conf.
> 
> Martin

By manually creating /etc/ocfs2/cluster.conf to say:

cluster:
        node_count = 1
        name = ocfs2

node:
        ip_port = 7777
        ip_address = 192.168.0.87
        number = 1
        name = db
        cluster = ocfs2

I can mount the filesystem so some progress has been made.

I'm new to this so I may be missing a lot but following the instructions
in the user guide did not get me to this point:

1. the ocfs2console does not run without setting my PYTHONPATH first - I
don't know why.
2. the ocfs2console does not seem to create the /etc/ocfs2/cluster.conf
(for me anyway).
3. if you install the ocfs2 tools from the rpm it create a minor
cluster.conf which ocfs2console does not seem to like since you can't
add nodes. If you install from the source code you don't even get a
cluster.conf.

I am willing to accept I've missed things but what were they? Does
everyone go through this?

Martin

> > Martin Evans wrote:
> > > John Peeken, Linux OS Support wrote:
> > >> Martin,
> > >> http://oss.oracle.com/projects/ocfs2/documentation/
> > >> See the OCFS2 FAQ and the users guide.
> > >> Follow the steps on OC2B Cluster Service Loading
> > >> regards,
> > >> John Peeken
> > >> Linux OS Support
> > >>
> > > John,
> > >
> > > Thanks for that, I had missed the part about running
> > >
> > > /etc/init.d/o2cb configure
> > >
> > > However, I don't have a cluster.conf and the docs seems to suggest you 
> > > run ocfs2console to create it:
> > >
> > > If you have installed the console, use it to create this configuration 
> > > file. For details, refer to the user's guide. If you do not have the 
> > > console installed, check the Appendix in the User's guide for a sample 
> > > cluster.conf and the details of all the components. Do not forget to 
> > > copy this file to all the nodes in the cluster. If you ever edit this 
> > > file on any node, ensure the other nodes are updated as well.
> > >
> > > and in the user guide it says:
> > >
> > > Start ocfs2console and click on menu item Cluster followed by 
> > > Configure Nodes. If the cluster is
> > > offline, the console will start it and display a message to that 
> > > effect. If cluster.conf is not present,
> > > the console will create one with a default cluster name ocfs2.
> > >
> > > but every time I run the ocfs2console -N or click on configure nodes I 
> > > get the error stated in my last email.
> > >
> > > How do you create the cluster.conf with the console?
> > >
> > > Martin
> > >> Martin J. Evans wrote:
> > >>
> > >>> I am trying to use ocfs2 and wanted to know if anyone knew of a good 
> > >>> getting
> > >>> started guide as I'm struggling to find a one which is relevant for 
> > >>> ocfs2. So
> > >>> far I've loaded the ocfs2 kernel modules (linux) and installed the 
> > >>> ocfs2 tools,
> > >>> I managed to mkfs.ocfs2 a partition but:
> > >>>
> > >>> 1. ocfs2console errored with
> > >>>
> > >>> Traceback (most recent call last):
> > >>>  File "/usr/local/sbin/ocfs2console", line 3, in ?
> > >>>    from ocfs2interface.about import process_args
> > >>> ImportError: No module named ocfs2interface.about
> > >>>
> > >>> I don't know what the correct fix for this but if I run the 
> > >>> ocfsconsole with
> > >>> PYTHONPATH=/usr/local/lib/python2.4/site-packages it works. I can 
> > >>> see ocfstools
> > >>> installed the ocfs python packages here and I don't see wht python 
> > >>> is not
> > >>> looking in the site dir.
> > >>>
> > >>> 2. Now I can run ocfs2console I run with -N to configure my noeds 
> > >>> and just get
> > >>> a dialogue saying:
> > >>>
> > >>> Could not query the state of the cluster stack.This must be resolved 
> > >>> before any
> > >>> OCFS2 filesystemcan be mounted.
> > >>>
> > >>> In case it makes a diference /etc/init.d/o2cb.init status shows
> > >>>
> > >>> Module "configfs": Loaded
> > >>> Filesystem "configfs": Not mounted
> > >>> Module "ocfs2_nodemanager": Loaded
> > >>> Module "ocfs2_dlm": Loaded
> > >>> Module "ocfs2_dlmfs": Not loaded
> > >>> Filesystem "ocfs2_dlmfs": Not mounted
> > >>>
> > >>> I am using ocfs2-tools-1.2.1.
> > >>>
> > >>> I am a bit stuck for now at this point.
> > >>>
> > >>> Any ideas or pointers?
> > >>>
> > >>> Martin
> > >>> -- 
> > >>> Martin J. Evans
> > >>> Easysoft Ltd, UK
> > >>> http://www.easysoft.com
> > >>>
> > >
> > > _______________________________________________
> > > Ocfs2-users mailing list
> > > Ocfs2-users at oss.oracle.com
> > > http://oss.oracle.com/mailman/listinfo/ocfs2-users
> > 
> > 
-- 
Martin J. Evans
Easysoft Limited
http://www.easysoft.com