Change your fstab parameters from 
"...loop  0 0" to "...loop  0 1" 
(might work, might not)

It looks to me like a race condition caused by parallel mount tasks.
The second zero allows non-sequential (multiple ) mount processes.  A one disables it.

The missing commas seem wrong, but not an issue here.

(-:  Chas.M.  :-)


Date: Mon, 2 May 2011 20:21:33 -0700
Subject: Help with fstab additions
From: lthielster@gmail.com
To: plug-discuss@lists.plug.phoenix.az.us

I've added these 6 lines to /etc/fstab on this machine:

/home/larry/isofiles/ubuntu/10.04/ubuntu-10.04.02-desktop-i386.iso    /mnt/ubu1004DL32    udf,iso9660 user,loop 0 0

/home/larry/isofiles/ubuntu/10.04/ubuntu-10.04.02-desktop-amd64.iso    /mnt/ubu1004DL64    udf,iso9660 user,loop 0 0
/home/larry/isofiles/ubuntu/10.10/ubuntu-10.10-desktop-i386.iso        /mnt/ubu1010DL32    udf,iso9660 user,loop 0 0

/home/larry/isofiles/ubuntu/10.10/ubuntu-10.10-desktop-amd64.iso    /mnt/ubu1010DL64    udf,iso9660 user,loop 0 0
/home/larry/isofiles/ubuntu/11.04/ubuntu-11.11-desktop-i386.iso        /mnt/ubu1104DL32    udf,iso9660 user,loop 0 0

/home/larry/isofiles/ubuntu/11.04/ubuntu-11.11-desktop-amd64.iso    /mnt/ubu1104DL64    udf,iso9660 user,loop 0 0
Problem is that only the middle two seem to work.  The first one (or more) show an error on screen and give 2 options before the gdm login but gdm comes up too soon to do anything.  After logging in I find 


May  2 19:49:11 fogtest exportfs[1100]: /etc/exports [2]: Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/images/dev".#012  Assuming default behaviour ('no_subtree_check').#012  NOTE: this default has changed since nfs-utils version 1.0.x
May  2 19:49:11 fogtest exportfs[1100]: /etc/exports [3]: Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/mnt/ubu1004DL32".#012  Assuming default behaviour ('no_subtree_check').#012  NOTE: this default has changed since nfs-utils version 1.0.x
May  2 19:49:11 fogtest exportfs[1100]: /etc/exports [4]: Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/mnt/ubu1004DL64".#012  Assuming default behaviour ('no_subtree_check').#012  NOTE: this default has changed since nfs-utils version 1.0.x
May  2 19:49:11 fogtest exportfs[1100]: /etc/exports [5]: Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/mnt/ubu1010DL32".#012  Assuming default behaviour ('no_subtree_check').#012  NOTE: this default has changed since nfs-utils version 1.0.x
May  2 19:49:11 fogtest exportfs[1100]: /etc/exports [6]: Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/mnt/ubu1010DL64".#012  Assuming default behaviour ('no_subtree_check').#012  NOTE: this default has changed since nfs-utils version 1.0.x
May  2 19:49:11 fogtest exportfs[1100]: /etc/exports [7]: Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/mnt/ubu1104DL32".#012  Assuming default behaviour ('no_subtree_check').#012  NOTE: this default has changed since nfs-utils version 1.0.x
May  2 19:49:11 fogtest exportfs[1100]: /etc/exports [8]: Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/mnt/ubu1104DL64".#012  Assuming default behaviour ('no_subtree_check').#012  NOTE: this default has changed since nfs-utils version 1.0.x

from processing /etc/exports for nfs.  I don't think this means anythoing about why only 2 of the 6 gets mounted.  Any ideas?

-- 
Dazed_75 a.k.a. Larry

The spirit of resistance to government is so valuable on certain occasions, that I wish it always to be kept alive.

  - Thomas Jefferson


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