Interesting.  Putting the comma in all 6 lines made them all fail one at a time.  The failure message in /var/log/boot.log says

mount: unknown filesystem type 'loop'
mountall: mount /tftpboot/howtogeek/linux/ubu1004DL32 [745] terminated with status 32

and I find no reference to loop in a man fstab though I do in mount.  I am wondering if the guide I am using may have been written by someone who manually mounted as a loop device and then wrote the article and assumed it was a valid type for fstab.  <mumbling as I speculate>  I have never understood loop devices.  Is that why you said you did not know why any of them worked?


On Mon, May 2, 2011 at 8:53 PM, Brian Cluff <brian@snaptek.com> wrote:
I can't tell you why any of them work, but there appears to be a missing comma between iso9660 and user on all the lines.

As for the nfs stuff, nfs requires you to add either the "subtree_check" or "no_subtree_check" option to the exports file for every line these days.

Brian


On 05/02/2011 08:21 PM, Dazed_75 wrote:
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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--
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