[CentOS] Fedora and CentOS no longer on speaking terms

Sat Aug 20 11:05:51 UTC 2011
Craig White <craigwhite at azapple.com>

On Sat, 2011-08-20 at 09:38 +0100, Anne Wilson wrote:
> On Saturday 20 Aug 2011 03:41:12 Craig White wrote:
> > On Fri, 2011-08-19 at 17:46 +0100, Anne Wilson wrote:
> > > On Friday 19 Aug 2011 17:23:34 Anne Wilson wrote:
> > > > On Friday 19 Aug 2011 15:43:23 Tony Schreiner wrote:
> > > > > NFS v4 problems maybe. Try setting a value for  Domain  in
> > > > >
> > > > > /etc/idmapd.conf
> > > > >
> > > > > on both systems (the same for both).
> > > >
> > > > That gave me an unbootable system.  I've removed it, and am back at
> > > > square 1. Two things -
> > > >
> > > > I should have said that I can access the system from the laptop using
> > > > ssh + keys.
> > > >
> > > > During bootup I saw many messages about nfs4 exports failing, so that's
> > > >  whre the problem is, it seems.  Can you please give me a sample line
> > > > of a known good nfs4 export?
> > >
> > > It's hard to be sure when messages flash by so quickly, but I got the
> > > impression that there was something about fstab.  Maybe the format
> > > required for those lines has changed, too?  These are the lines that I
> > > guess it is looking at:
> > >
> > > /Data1			/nfs4exports/Data1	none	bind		0 0
> > > /Data2			/nfs4exports/Data2	none`	bind		0 0
> > > /Data3			/nfs4exports/Data3	none	bind		0 0
> > > /home			/nfs4exports/home	none	bind		0 0
> > >
> > > I think there was something about wrong or missing type.  Each of those
> > > partitions is defined earlier in fstab and does have the correct type
> > > stated.
> > 
> > ----
> > this is obviously intended to be your NFS server (who knows whether this
> > is CentOS or Fedora 14).
> 
> The server is CentOS 6.
> 
> > You can only bind mount something that already
> > exists and maybe it's empty.
> > 
> > does ls -l /Data1 /Data2 /Data3 /home show much of anything?
> 
> Yes, it lists the contents of each of them.
> > 
> > On the other system (the NFS client), what does it have in fstab?
> 
> 192.168.0.40:/Data1 /mnt/borg_Data1 nfs4 rsize=8192,wsize=8192,timeo=14,intr 0
>  0
> and equivalents for each of the others.
> 
> As I said originally, these lines worked with nfs4 on CentOS 5.
----
then issuing the command (on the Fedora client)

mount /mnt/borg_Data1
should either work or fail and give you a message (at worst, log
to /var/log/messages).

This of course assumes that it isn't already mounted which could be
noted by simply issuing a 'mount' command by itself to see what is
mounted.

You may have to check /var/log/messages on the CentOS server for clues
too.

Craig


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.