~mdw / dpkg / blame
| Commit | Line | Data |
|---|---|---|
| 1479465f GJ |
1 | Installation methods for multiple binary CDs |
| 2 | -------------------------------------------- | |
| 3 | ||
| 4 | This package provides three new methods to be used within dselect in | |
| 5 | order to access Debian binary packages stored across multiple binary CD | |
| 6 | ROMs. It will install itself into the methods directory from dselect | |
| 7 | so the user will be able to use them immediately. | |
| 8 | ||
| 9 | These are the three new methods: | |
| 10 | ||
| 11 | . Multiple binary CD-ROMs | |
| 12 | ||
| 13 | . Multiple binary CD-ROMs, accessed through NFS | |
| 14 | ||
| 15 | . Multiple binary CD-ROMs, pre-mounted | |
| 16 | ||
| 17 | Acquiring package data | |
| 18 | --------------------- | |
| 19 | ||
| 20 | Since this method is derived from the 'mounted' method the user is | |
| 21 | able to access up to five binary directories within 'dists/stable': | |
| 22 | ||
| 23 | . main | |
| 24 | . contrib | |
| 25 | . non-free | |
| 26 | . non-US | |
| 27 | . local | |
| 28 | ||
| 29 | The selected method will try to read the 'Packages.cd' file from each | |
| 30 | of these directories if it is available. | |
| 31 | ||
| 32 | Identifying the CD-ROM | |
| 33 | ---------------------- | |
| 34 | ||
| 35 | A unique name is associated to each CD. This name should correspond | |
| 36 | with the label on the front of the CD. The name is also available on | |
| 37 | the CD, so the system can find out which CD is in the drive at any | |
| 38 | time. | |
| 39 | ||
| 40 | Installing the files | |
| 41 | -------------------- | |
| 42 | ||
| 43 | At the beginning of the installation the 'multicd' package will sort | |
| 44 | the list of to-be-installed packages and install them CD by CD. If a | |
| 45 | different CD-ROM is required the user will be prompted to exchange | |
| 46 | the CD-ROM. | |
| 47 | ||
| 48 | Preparing multiple binary CD-ROMs | |
| 49 | --------------------------------- | |
| 50 | ||
| 51 | Since the 'multicd' methods need to know which packages are on which | |
| 52 | CD-ROMs one cannot use regular 'Packages' files. An additional data | |
| 53 | field "X-Medium:" is required. The first CD-ROM from the set should | |
| 54 | contain all 'Packages.cd' files. To be more convenient you should | |
| 55 | include the 'Packages.cd' files on all CD-ROMs. This ensures that | |
| 56 | you don't have to start with the first CD-ROM all the time. | |
| 57 | ||
| 58 | Additionally the package needs to gain information which CD-ROM is | |
| 59 | currently used. Thus each CD-ROM contains the file '.disk/info' | |
| 60 | which contains the symbolic name for the CD-ROM as specified by | |
| 61 | "X-Medium:". | |
| 62 | ||
| 63 | In order to be able to create the modified 'Packages.cd' files, you | |
| 64 | have to use the '-M medium' option of dpkg-scanpackages (supported | |
| 65 | in dpkg-dev >= 1.15.5). | |
| 66 | ||
| 67 | To split the 'main' distribution into two CD-ROMs you'll need to | |
| 68 | create a 'Packages.cd' file for each 'binary-$arch' directory. | |
| 69 | Afterwards you simply append the second one to the first one and | |
| 70 | put the resulting 'Packages.cd' file into both 'binary-$arch' | |
| 71 | directories. | |
| 72 | ||
| 73 | Sample Layout | |
| 74 | ------------- | |
| 75 | ||
| 76 | CD1 .disk/info = "Debian GNU/Linux binary-i386" | |
| 77 | dists/stable/main/binary-all/ | |
| 78 | binary-i386/Packages.cd.gz | |
| 79 | binary-i386/net/foo.deb | |
| 80 | contrib/binary-i386/Packages.cd.gz | |
| 81 | non-free/binary-i386/Packages.cd.gz | |
| 82 | non-US/binary-i386/Packages.cd.gz | |
| 83 | ||
| 84 | CD2 .disk/info = "Debian GNU/Linux contrib-i386" | |
| 85 | dists/stable/main/binary-i386/Packages.cd.gz | |
| 86 | contrib/binary-all/ | |
| 87 | binary-i386/Packages.cd.gz | |
| 88 | binary-i386/net/foo.deb | |
| 89 | non-free/binary-i386/Packages.cd.gz | |
| 90 | non-US/binary-i386/Packages.cd.gz | |
| 91 | ||
| 92 | CD3 .disk/info = "Debian GNU/Linux non-free-i386" | |
| 93 | dists/stable/main/binary-i386/Packages.cd.gz | |
| 94 | contrib/binary-i386/Packages.cd.gz | |
| 95 | non-free/binary-all/ | |
| 96 | binary-i386/Packages.cd.gz | |
| 97 | binary-i386/net/foo.deb | |
| 98 | non-US/binary-all/ | |
| 99 | ||
| 100 | To re-generate the Packages file you have to chdir into | |
| 101 | 'dists/stable/$part' and issue 'dpkg-scanpackages' as follows. It's | |
| 102 | assumed that you use regular compressed overrides files in | |
| 103 | /pub/debian/indices. | |
| 104 | ||
| 105 | CD1: dpkg-scanpackages -M "Debian GNU/Linux binary-i386" \ | |
| 106 | binary-i386 /pub/debian/indices/override.hamm.gz \ | |
| 107 | dists/stable/ > binary-i386/Packages | |
| 108 | ||
| 109 | CD2: dpkg-scanpackages -M "Debian GNU/Linux contrib-i386" \ | |
| 110 | binary-i386 /pub/debian/indices/override.hamm.contrib.gz \ | |
| 111 | dists/stable/ > binary-i386/Packages | |
| 112 | ||
| 113 | CD3: dpkg-scanpackages -M "Debian GNU/Linux non-free-i386" \ | |
| 114 | binary-i386 /pub/debian/indices/override.hamm.non-free.gz \ | |
| 115 | dists/stable/ > binary-i386/Packages | |
| 116 | ||
| 117 | Please direct comments to Martin Schulze <joey@infodrom.north.de> |