projects / people / ms / strongswan.git / blame
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1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> |
| 2 | <HTML> | |
| 3 | <HEAD> | |
| 4 | <TITLE>Building a RedHat root image</TITLE> | |
| 5 | <!-- Created by: Michael Richardson, 22-Nov-2001 --> | |
| 6 | <!-- Changed by: Michael Richardson, 22-Nov-2001 --> | |
| 7 | ||
| 8 | ||
| 9 | </HEAD> | |
| 10 | <BODY> | |
| 11 | <H1>Building a RedHat root image</H1> | |
| 12 | ||
| 13 | <P> | |
| 14 | The image required to use User-Mode-Linux is just a normal set of executables. | |
| 15 | These can be extracted from a RedHat distribution using the following proceedure. | |
| 16 | </P> | |
| 17 | ||
| 18 | <P> | |
| 19 | There is a script in testing/utils called <CODE>uml-rhroot.sh</CODE>. It takes | |
| 20 | two arguments: | |
| 21 | <UL> | |
| 22 | <LI> a directory in which to put resulting directory tree. | |
| 23 | <LI> a directory tree containing the RedHat distribution RPMs. This may be | |
| 24 | in one of three forms: | |
| 25 | <UL> | |
| 26 | <LI> a directory containing the directories "disc1" and "disc2". These | |
| 27 | could be ISO images that are mounted loopback via, for instance: | |
| 28 | <PRE> | |
| 29 | <CODE> | |
| 30 | mkdir -p /distros/redhat/7.2/disc1 /distros/redhat/7.2/disc1 | |
| 31 | mount -t iso9660 -o loop,ro /distros/redhat/7.2/enigma-i386-disc1.iso /distros/redhat/7.2/disc1 | |
| 32 | mount -t iso9660 -o loop,ro /distros/redhat/7.2/enigma-i386-disc2.iso /distros/redhat/7.2/disc2 | |
| 33 | </CODE> | |
| 34 | </PRE> | |
| 35 | or even two real CDroms mounted somewhere. In the example above, use "/distros/redhat/7.2" as the distribution directory. | |
| 36 | </LI> | |
| 37 | <LI> a directory containing a "merged" disc1 and disc2 as suggested by RedHat in <A HREF="http://www.redhat.com/docs/manuals/linux/RHL-7.2-Manual/install-guide/s1-install-network.html#S2-INSTALL-SETUPSERVER">http://www.redhat.com/docs/manuals/linux/RHL-7.2-Manual/install-guide/s1-install-network.html under "Setting up the Server"</A>. | |
| 38 | <LI> a directory containing all the required RPMs. (See <A HREF="uml-rhroot-list7.2.txt">list of RPMs</A>)</LI> | |
| 39 | </UL> | |
| 40 | </UL> | |
| 41 | </P> | |
| 42 | ||
| 43 | <P>The unpacked distribution will take approximately 133Mb. You will | |
| 44 | want to locate this on the same partition as your intended root | |
| 45 | trees for your User-Mode-Linux's as this will permit hard links to | |
| 46 | be used, saving disk space. | |
| 47 | </P> | |
| 48 | ||
| 49 | <P> | |
| 50 | Because the RPM command used uses the chroot(2) system call and | |
| 51 | needs to change ownership of the files that it creates, it must be | |
| 52 | run as root. Afterward, you should chown the entire directory to the | |
| 53 | userid that you will be using for testing (i.e. probably | |
| 54 | yours). It should eventually suffices to make sure that you can read | |
| 55 | every file. | |
| 56 | </P> | |
| 57 | ||
| 58 | <P> | |
| 59 | You should be able to chroot to this directory and run programs. If | |
| 60 | you can not at least run ls, then there is a problem. | |
| 61 | </P> | |
| 62 | <P> | |
| 63 | Expect a couple of errors about install-info. | |
| 64 | </P> | |
| 65 | ||
| 66 | <P> | |
| 67 | An example: | |
| 68 | <PRE> | |
| 69 | <CODE> | |
| 70 | Script started on Thu Nov 22 15:51:15 2001 | |
| 71 | cassidy:/c2/user-mode-linux# df | |
| 72 | Filesystem 1k-blocks Used Available Use% Mounted on | |
| 73 | /dev/hda1 3844408 1673528 1975584 46% / | |
| 74 | /dev/hda3 12495048 1823404 10036884 16% /home | |
| 75 | /dev/hdc1 10325748 805056 8996172 9% /c1 | |
| 76 | /dev/hdc2 10325780 4815160 4986100 50% /c2 | |
| 77 | /dev/hdc3 10325780 2972480 6828780 31% /c3 | |
| 78 | /dev/hdc4 7495084 3059640 4054704 44% /c4 | |
| 79 | /distros/redhat/7.2/enigma-i386-disc1.iso | |
| 80 | 662072 662072 0 100% /distros/redhat/7.2/disc1 | |
| 81 | /distros/redhat/7.2/enigma-i386-disc2.iso | |
| 82 | 653740 653740 0 100% /distros/redhat/7.2/disc2 | |
| 83 | cassidy:/c2/user-mode-linux# /c2/freeswan/sandbox-main/testing/utils/uml-rhroot.sh | |
| 84 | Usage: /c2/freeswan/sandbox-main/testing/utils/uml-rhroot.sh rootdir cdimagedir | |
| 85 | cassidy:/c2/user-mode-linux# /c2/freeswan/sandbox-main/testing/utils/uml-rhroot.sh /c2/user-mode-linux/rpm-root/root /distros/redhat/7.2 | |
| 86 | Assuming RH disc1 at /distros/redhat/7.2/disc1/RedHat/RPMS | |
| 87 | and disc2 at /distros/redhat/7.2/disc2/RedHat/RPMS | |
| 88 | /var/tmp/rpm-tmp.99149: /sbin/install-info: No such file or directory | |
| 89 | error: execution of %post scriptlet from textutils-2.0.14-2 failed, exit status 127 | |
| 90 | cat: /proc/mounts: No such file or directory | |
| 91 | warning: /var/lib/rpm/Basenames created as /var/lib/rpm/Basenames.rpmnew | |
| 92 | warning: /var/lib/rpm/Conflictname created as /var/lib/rpm/Conflictname.rpmnew | |
| 93 | warning: /var/lib/rpm/Group created as /var/lib/rpm/Group.rpmnew | |
| 94 | warning: /var/lib/rpm/Name created as /var/lib/rpm/Name.rpmnew | |
| 95 | warning: /var/lib/rpm/Packages created as /var/lib/rpm/Packages.rpmnew | |
| 96 | warning: /var/lib/rpm/Providename created as /var/lib/rpm/Providename.rpmnew | |
| 97 | warning: /var/lib/rpm/Requirename created as /var/lib/rpm/Requirename.rpmnew | |
| 98 | warning: /var/lib/rpm/Triggername created as /var/lib/rpm/Triggername.rpmnew | |
| 99 | You should now chown it to yourself. | |
| 100 | cassidy:/c2/user-mode-linux# chown -R mcr rpm-root/root | |
| 101 | cassidy:/c2/user-mode-linux# ls rpm-root/root | |
| 102 | bin dev home lib opt root tmp var | |
| 103 | boot etc initrd mnt proc sbin usr | |
| 104 | cassidy:/c2/user-mode-linux# chroot rpm-root/root | |
| 105 | cassidy:/# ls | |
| 106 | bin dev home lib opt root tmp var | |
| 107 | boot etc initrd mnt proc sbin usr | |
| 108 | cassidy:/# exit | |
| 109 | cassidy:/c2/user-mode-linux# exit | |
| 110 | Script done on Thu Nov 22 15:54:33 2001 | |
| 111 | </CODE> | |
| 112 | </PRE> | |
| 113 | ||
| 114 | ||
| 115 | </BODY> | |
| 116 | </HTML> |