** Description changed:
Binary package hint: apt
+
+ TEST CASE:
+ 1. insert a intrepid alternate CD
+ 2. open a temrinal and type "apt-cdrom add"
+ 3. watch it fail
+
+ 4. install the new apt from hardy-proposed
+ 5. insert a intrepid alternate CD
+ 6. type apt-cdrom add and verify that it works (its ok that it prints
warnings about missing files)
+
+ ----
When acquiring packages from a networked archive, apt is quite happy for
the uncompressed Packages file to be omitted to save space; it only
fetches the indexes it needs, and will try Packages.bz2 (if bzip2 is
available) or Packages.gz first, so omitting Packages is harmless.
However, the same does not hold for CDs, which is rather unfortunate as
the space problem is more acute there; we'd like to be able to remove
the uncompressed Packages files from our alternate install CDs and save
about 1.5MB. apt-cdrom wants to copy all the indexes, and gets upset
when some of them are missing. Here's a demonstration with a hacked-up
loop-mounted image from which I removed all the uncompressed Packages
files:
$ sudo apt-cdrom -m add
Using CD-ROM mount point /cdrom/
Identifying.. [661daa73dbd974b9ad9c1ffeeab8f8f0-2]
Scanning disc for index files..
Found 2 package indexes, 0 source indexes, 0 translation indexes and 1
signatures
Found label 'Ubuntu 8.10 _Intrepid Ibex_ - Alpha i386 (20080806.2)'
This disc is called:
'Ubuntu 8.10 _Intrepid Ibex_ - Alpha i386 (20080806.2)'
Copying package lists...gpgv: Signature made Wed 06 Aug 2008 16:39:54 BST
using DSA key ID FBB75451
gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key <[EMAIL
PROTECTED]>"
E: Could not open file /cdrom/dists/intrepid/main/binary-i386/Packages -
open (2 No such file or directory)
E: Unable to determine the file size - fstat (9 Bad file descriptor)
W: Hash mismatch for: main/binary-i386/Packages
E: Could not open file
/cdrom/dists/intrepid/main/debian-installer/binary-i386/Packages - open (2 No
such file or directory)
E: Unable to determine the file size - fstat (9 Bad file descriptor)
W: Hash mismatch for: main/debian-installer/binary-i386/Packages
E: Could not open file
/cdrom/dists/intrepid/restricted/binary-i386/Packages - open (2 No such file or
directory)
E: Unable to determine the file size - fstat (9 Bad file descriptor)
W: Hash mismatch for: restricted/binary-i386/Packages
E: Could not open file
/cdrom/dists/intrepid/restricted/debian-installer/binary-i386/Packages - open
(2 No such file or directory)
E: Unable to determine the file size - fstat (9 Bad file descriptor)
I suspect that it might be possible to work around this by removing the
uncompressed Packages files from Release, but this would probably cause
other problems. Last I checked, the size and checksums of Packages had
to be in Release even if the files themselves were missing, in order
that apt could verify those files after uncompressing them. People do
create local mirrors starting from an Ubuntu CD image quite often, so I
wouldn't like to introduce a two-way incompatibility here.
Would it be possible to only fail if none of the versions of a given
Packages file are available, or explicitly copy only the compressed
files, or synthesise the uncompressed files from the compressed ones in
order to verify Release file integrity, or something?
--
requires uncompressed Packages files on CDs
https://bugs.launchpad.net/bugs/255545
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