Cannot umount NFS mounted cdrom

Cannot umount NFS mounted cdrom

[Nicolas Turro]

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Hi,
We use linux 2.4.17 and knfsd-0.2.1-1 and we have a problem :
1- we mount an ISO cdrom on host A on /mnt/cdrom
2- we do a NFS mount of A:/mnt/cdrom /tmp/remotecdrom on host B
3- we umount /tmp/remotecdrom on host B
4- when we try to umount /mnt/cdrom on host A, he get fs busy and it fails.
lsof doesn't give any process using /mnt/cdrom

Is-this a known problem ? Any workaround ?

Thx in advance.

N. Turro
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Re: Cannot umount NFS mounted cdrom

[Andreas Metzler]

On Fri, Oct 18, 2002 at 02:41:14PM +0200, Nicolas Turro wrote:
> We use linux 2.4.17 and knfsd-0.2.1-1 and we have a problem :
> 1- we mount an ISO cdrom on host A on /mnt/cdrom
> 2- we do a NFS mount of A:/mnt/cdrom /tmp/remotecdrom on host B
> 3- we umount /tmp/remotecdrom on host B
> 4- when we try to umount /mnt/cdrom on host A, he get fs busy and it fails.
> lsof doesn't give any process using /mnt/cdrom
> 
> Is-this a known problem ? Any workaround ?

You have to unexport /mnt/cdrom on A before you can unmount it - use
exportfs -correct -options.
                  cu andreas


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Re: Cannot umount NFS mounted cdrom

[James Pearson]

Try unexporting the CD mount point on host A - see:

http://marc.theaimsgroup.com/?l=linux-nfs&m=100166778506852&w=2

James Pearson

Nicolas Turro wrote:
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Hi,
> We use linux 2.4.17 and knfsd-0.2.1-1 and we have a problem :
> 1- we mount an ISO cdrom on host A on /mnt/cdrom
> 2- we do a NFS mount of A:/mnt/cdrom /tmp/remotecdrom on host B
> 3- we umount /tmp/remotecdrom on host B
> 4- when we try to umount /mnt/cdrom on host A, he get fs busy and it fails.
> lsof doesn't give any process using /mnt/cdrom
> 
> Is-this a known problem ? Any workaround ?
> 
> Thx in advance.
> 
> N. Turro
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.0.6 (GNU/Linux)
> Comment: For info see http://www.gnupg.org
> 
> iD8DBQE9sAFqty/HpgyBIboRAiu+AJ0R2fJDOEp4zGcLZxBKYiDczFbg/gCfUwUX
> nIUTITIVtDN+9Ch05JM1bco=
> =0oqr
> -----END PGP SIGNATURE-----
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf
> _______________________________________________
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