Problems with RHEL 5 server: NFS related?

[Mertens, Bram]

I haven't checked it myself but perhaps /proc/mounts would show the
correct status?

When it happened on our systems I always noticed after running the mount
command with the remount,rw option:
# mount -o remount,rw /
mount: block device /dev/rootvg/rootlv is write-protected, mounting
read-only

Things to try initially would be those performed by the NFS init script,
creating/removing a file in `/var/lock/subsys/nfs' reading, checking the
file attributes of /var/lib/nfs/etab, etc.

Kind regards

Bram

> 


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-----Original Message-----
> From: redhat-list-bounces at redhat.com [mailto:redhat-list-
> bounces at redhat.com] On Behalf Of Kenneth Holter
> Sent: dinsdag 3 februari 2009 16:25
> To: General Red Hat Linux discussion list
> Subject: Re: Problems with RHEL 5 server: NFS related?
> 
> Thanks for your reply.
> 
> I did run "mount" to check for ro/rw attributes, and it said "rw" as
> expected. How do you suggest I check the mount options besides running
> "mount" - checking /etc/mtab?
> 
> The server is a physical Dell PowerEdge server, and not connected to
> any
> remote storage. So it's all locally stored.
> 
> Output of dump2fs states that the file system is mounted cleanly. Are
> there
> anything in particular you suggest I'd investigate further with
regards
> to
> file system problems?
> 
> 
> 
> On 2/2/09, Mertens, Bram <mertensb at mazdaeur.com> wrote:
> >
> >
> > Did you check if the filesystem(s) were mounted RW?
> >
> > Note that you can't always trust the output of mount.
> >
> > We ran into a kernel bug on some of our virtual servers a while ago
> > where a file system became read-only in the event of busy I/O retry
> or
> > path failover of the ESX Server's SAN storage (details available at
> >
>
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cm
> d
> > =displayKC&externalId=51306)
> >
> > Even though mount showed the file system mounted rw the file system
> was
> > in fact write-protected as trying to remount it showed:
> > # mount -o remount,rw /
> > mount: block device /dev/rootvg/rootlv is write-protected, mounting
> > read-only
> >
> > Considering 2 of your symptoms indicate a problem with the file
> system
> > you might want to investigate in this direction.
> >
> > HTH
> >
> > Bram
> >
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