Hi Jari,
Thanks for your response.
Re: EXT3. Yes. I set this filesystem up "years" ago. I originally
created an ext3, then modified to remove the journal based upon your
advice on this mailing list - I just did not rename the ".fs.ext3" file.
Note that mount shows ext2.
Re: mount/umount. Your explanation makes sense, however, "it used to
work!". Let me explain:
1. I mount the loop filesystem using your option 3 below.
2. Gnome desktop (nautilus) displays the mount on the desktop and
within nautilus itself in graphical form.
3. To unmount the loop device, I right click on the icon and select
"Unmount Volume".
4. This "used to work" up until about a month ago. When I do this
now, the operation fails with the message: "Unable to unmount
the selected volume." with the details
"umount: /dev/loop4 not mounted"
"Error: umount failed"
I am trying to establish whether something in mount/umount or in Gnome
nautilus has changed... any thoughts?
BTW, I've reported this elsewhere at https://launchpad.net/bugs/84201
Cheers,
Daniel.
--
Daniel Harvey <daniel@xxxxxxxxxxxxxxx>
On Sat, 2007-03-17 at 20:53 +0200, Jari Ruusu wrote:
> Daniel Harvey wrote:
> > My fstab mount line represents the following:
> >
> > /media/usbdisk/.fs.ext3 --> /dev/loop4 --> /media/usbdisk/fs ext2
> > file containing EXT3 filesystem --> loop device --> mounted EXT3
> > filesystem
>
> That is journaling file system on file backed loop.
> loop-AES README section 2.2.
>
> > The problem is that in the past, "umount /dev/loop4" worked, but NOT any
> > more.
>
> There are three ways to mount loop devices:
>
> 1) Do loop setup/teardown manually:
>
> losetup -e AES128 -K foo.gpg /dev/loop4 /dev/hda999
> mount -t ext3 /dev/loop4 /mnt
> umount /mnt (or umount /dev/loop4 )
> losetup -d /dev/loop4
>
> 2) Let mount/umount do loop setup/teardown for you:
>
> mount -t ext3 /dev/hda999 /mnt -o loop=/dev/loop4,encryption=AES128,gpgkey=foo.gpg
> umount /mnt (or umount /dev/hda999 )
>
> 3) The fstab way, mount/umount do loop setup/teardown for you:
>
> /etc/fstab line:
> /dev/hda999 /mnt ext3 defaults,noauto,loop=/dev/loop4,encryption=AES128,gpgkey=foo.gpg,user=daniel 0 0
>
> mount /mnt
> umount /mnt (or umount /dev/hda999 )
>
> > However mount shows:
> >
> > /media/usbdisk/.fs.ext3 on /media/usbdisk/fs type ext2
> > (rw,nosuid,nodev,loop=/dev/loop4,user=daniel)
>
> Looks like you used method (1) earlier and are now using method (3). umount
> needs mountpoint directory or backing device that was used at mount time. If
> you didn't mount /dev/loop4 device directly, then you should not expect
> "umount /dev/loop4" to work either.
>
> Try "umount /media/usbdisk/fs" or "umount /media/usbdisk/.fs.ext3"
>
-
Linux-crypto: cryptography in and on the Linux system
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