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List:       veritas-vx
Subject:    Re: [Veritas-vx] Force unmount
From:       Bayard Bell <Bayard.G.Bell () morganstanley ! com>
Date:       2002-10-21 22:23:09
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Neither will show locks held directly in kernel (e.g. by the NFS kernel
components).

Where can umount -f can a panic?

"Myers, Mike" wrote:
> 
> We've run into many situations where fuser returns clean (and lsof wasn't
> installed).  Once with lsof installed we discovered that someone had a named
> pipe open on the file system (that fuser didn't show).  Apparently fuser
> does not report on those (Sun has acknowledged this as a bug -- I can't
> recall if they classified it as a functional bug or a bug in the man
> page...)
> 
> Cheers,
>  - Mike.Myers@nwdc.ibs-lmco.com
> 
> -----Original Message-----
> From: Peter DrakeUnderkoffler [mailto:pcd@xinupro.com]
> Sent: Friday, October 04, 2002 4:52 AM
> To: Scott Howard
> Cc: Donaldson, Mark; 'Kramer, Dale'; Veritas Users VX (E-mail)
> Subject: Re: [Veritas-vx] Force unmount
> 
> Scott Howard wrote:
> >
> > On Thu, Oct 03, 2002 at 12:52:56PM -0600, Donaldson, Mark wrote:
> > > Solaris 8 supports a "-f" option to umount now.
> >
> > I would suggest using this option only as a last resort.  There is at
> > least one situation where doing a umount -f can panic a machine.
> >
> > There is a bug for this, but the fix is far from trivial.
> >
> >   Scott.
> > _______________________________________________
> > Veritas-vx maillist  -  Veritas-vx@mailman.eng.auburn.edu
> > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
> 
> I agree.  A combination of fuser and lsof would tell you what
> is preventing the umount.
> 
> Thanks
> Peter
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> 
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