--- On Thu, 11/13/08, Alan Brown <ajb2 AT mssl.ucl.ac DOT uk> wrote:

> From: Alan Brown <ajb2 AT mssl.ucl.ac DOT uk>
> Subject: Re: [Bacula-users] Missing nfs share blocks job [fd: 2.2.8]
> To: "Ronald Buder" <rbuder AT proficom-ag DOT de>
> Cc: bacula-users AT lists.sourceforge DOT net
> Date: Thursday, November 13, 2008, 10:42 AM
> On Thu, 13 Nov 2008, Ronald Buder wrote:
> 
> > > This is normal NFS behaviour - if a NFS server
> doesn't respond, the
> > > processes accessing it wait in an uninterruptible
> state. They also do
> > > not get notification of a problem by a signal.
> 
> > That's what I was afraid of...
> 
> It's a really _bad_ idea to backup NFS mounts. I
> explicitly exclude all of
> these in my backup definitions.
> 
> If at all possible, run a client on the NFS server to
> backup those
> filesystems directly.
> 

 It not possible to run bacula on deicated NAS server (e.g. NetApp Filer), so 
you have to back it up ove NFS mounts.

> > Is there no way at all to make a job, which has
> stalled due to
> > filesystem "restrictions", time out? I
> wonder if other (network)
> > filesystems or even storage devices might opt for a
> similar behaviour.
> 
> In general when you're waiting for a missing NFS
> server, your processes
> are in uninterruptible sleep and a lot of the time they
> won't even
> respond to SIGTERM or SIGKILL
> 
> This is one of the reasons why it's a bad idea to
> backup a network
> filesystem instead of doing it directly on the network
> fileserver.
> 
> AB
> 
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Hemant Shah
E-mail: hjrrs AT yahoo DOT com



      

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