[Ocfs2-users] Ocfs2-users Digest, Vol 99, Issue 3

[David Johle]

More specifically about blkid, here's my personal notes on the topic:


When trying to mount a filesystem by LABEL the first one listed in 
/etc/blkid/blkid.tab will be used.
For multipathed devices, this can be a problem as the /dev/sdX 
devices will often end up listed before
the /dev/mapper/mpathX in the blkid.tab, in which case only the 
/dev/sdX ones should be removed and cache rebuilt.

To do this, just remove the offending /dev/sdX lines from 
/etc/blkid/blkid.tab and then run `blkid` and it will recreate them 
in a compatible order (after the mpathX).  You can open blkid.tab 
again and check it before proceeding just to verify.




At 03:00 PM 3/10/2012, ocfs2-users-request at oracle.com wrote:
>Message: 2
>Date: Sat, 10 Mar 2012 09:57:12 -0800
>From: Sunil Mushran <sunil.mushran at oracle.com>
>Subject: Re: [Ocfs2-users] ocfs2console hangs on startup
>To: ocfs2-users at oss.oracle.com
>Message-ID: <4F5B95F8.9050406 at oracle.com>
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>ocfs2console has been obsoleted. Just use the utilities directly.
>To detect ocfs2 volumes, use blkid. You can use it to restrict
>the lookup paths. Refer its manpage.
>
>On 03/09/2012 06:15 PM, John Major wrote:
> > Hi,
> >
> > Hope this is the right place to ask this.
> >
> > I have set up 2 ubuntu lts machines with an IBM iscsi san. I have set up
> > multipathd and ocfs2 and it seems to be working.
> >
> > The problem is that when I run up ocfs2console it hangs (the console
> > app, not the system). Using strace, I can see that it is running through
> > all the /dev/sdx devices and loops trying to access the first one in
> > 'ghost' state per 'multipath -ll'.
> >
> > Is there a way to restrict which devices the app looks at as it starts
> > to say  /dev/mapper/mpath* since I don't actually want it to access any
> > of the /dev/sd.. devices directly?