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OverviewThis howto describes how to setup a Fedora Core 9 using init4boot initramfs. The aim is, to get a ready to use Fedora Core 9 system that boots from iSCSI. This setup assumes, that the new system will run as a guest system under Xen. PreparationBefore starting, the following things must be available:
Put the DVD image to the additional computer where an NFS server is running. Loop-mount it and export it via NFS. Note: pick a short name for the path - you'll have to type this some times... Create a directory on the Xen box (inside the dom0), and put the following files into this directory:
Startup the guest system: xm create -c fc9-install.sxp Start up a vnc viewer and connect to the freshly generated guest system: the IP address is the one from the host system, the port is somewhat random starting at 5900. (So if port 5900 is used by another server, increase the port number by 1 and try again, and again...) Basic InstallationThe installation is mostly the same as any other Fedora installation - just follow the instructions - and stop at the right point: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Press OK here and proceed to the next page, where you have to enter the root password. Enter the root password, but do not press OK. ![]() iSCSI SetupInstead of pressing OK, press ALT-Crsr-Rigth to switch to another terminal - which gives you the shell and the control. (The standard Fedora iSCSI setup seems broken - and is not very flexible. It is, e.g. not possible to use username / password for authentication or discovery.) ![]() Setup of initiatornameTo set the initiatorname, create the corresponding directory and edit the initiatorname.iscsi file: ![]() iscsid Configuration and StartupIf you want, you can now setup the configuration for iscsid. This is needed, if some non standard configuration must be used, e.g. usernames and passwords. Please have a look at the iscsid documentation how to specify the parameters. ![]() iSCSI target discoveryTo discover the iSCSI disk(s), use the following command: iscsiadm -m discovery -t sendtargets -p [iSCSI-Filer-IP]:[iSCSIFiler-Port] Typically the iSCSIFiler-Port is the standard iSCSI Port: 3260. The command returns the port (up to the first space; Note: the ',1' (or ',N') is part of the port) and the target (rest of the line). ![]() iSCSI target loginTo login into the detected targets, use the following command: iscsiadm -m node -T [target] -p [port] -l where target and port are the values from the discovery command. ![]() To check the success (or failure), you can switch with ALT-Crsr-Right to some log console: ![]() Now switch back to the first console (with Alt-Crsr-Left) where you entered the root password. ![]() Finish InstallationContinue the installation. The iSCSI disk will be used now as if this were a normal local disk. ![]() In this example, a custom disk layout way chosen - only one partition without any swap. ![]() ![]() ![]() ![]() ![]() ![]() ![]() No boot loader is needed for this setup - initramfs and kernel are stored on the dom0. ![]() ![]() Chose the packages you want to install. (Note that iscsi initiator must be installed. This can be done now (easy way) or later. ![]() ![]() ![]() ![]() ![]() ![]() ![]() Post InstallationGrab the latest init4boot initramfs from the Download page. Grab the current system kernel from Fedora Core 9 (use another installation or the kernel package. Put both files into a new directory. Additional you must put a < href="fedora_guest_setup/fc9-gnu4u.sxp">Xen configuration file into this directory - and adapt it to your needs. System AdaptionsSome adaptions must be done to the new system. These must be done in single user mode. So prepend an uppercase 'S' to the extra line in the configuration file: extra="S console=..." and boot up: xm create -c fc9-gnu4u.sxp. init.d iscsid scriptAfter booting, edit the /etc/init.d/iscsid. Add the following lines in the start function: success return fi if [ -f /etc/iscsi/iscsid.pid ] ; then echo "Killing iscsid from boot" kill `cat /etc/iscsi/iscsid.pid` sleep 3 kill -9 `cat /etc/iscsi/iscsid.pid` rm /etc/iscsi/iscsid.pid fi echo -n $"Starting iSCSI daemon: " Disable most servicesMost services are not needed, so they can be disabled (even some might have problems when running within Xen). Here is the list of active services: # chkconfig | grep on anacron 0:off 1:off 2:off 3:off 4:off 5:off 6:off atd 0:off 1:off 2:off 3:on 4:on 5:on 6:off auditd 0:off 1:off 2:on 3:on 4:on 5:on 6:off cpuspeed 0:off 1:on 2:on 3:on 4:on 5:on 6:off crond 0:off 1:off 2:on 3:on 4:on 5:on 6:off fuse 0:off 1:off 2:off 3:on 4:on 5:on 6:off haldaemon 0:off 1:off 2:off 3:on 4:on 5:on 6:off ip6tables 0:off 1:off 2:on 3:on 4:on 5:on 6:off iptables 0:off 1:off 2:on 3:on 4:on 5:on 6:off irqbalance 0:off 1:off 2:off 3:on 4:on 5:on 6:off iscsid 0:off 1:off 2:on 3:on 4:on 5:on 6:off mdmonitor 0:off 1:off 2:on 3:on 4:on 5:on 6:off messagebus 0:off 1:off 2:on 3:on 4:on 5:on 6:off microcode_ctl 0:off 1:off 2:on 3:on 4:on 5:on 6:off netconsole 0:off 1:off 2:off 3:off 4:off 5:off 6:off netfs 0:off 1:off 2:off 3:on 4:on 5:on 6:off network 0:off 1:off 2:on 3:on 4:on 5:on 6:off nfslock 0:off 1:off 2:off 3:on 4:on 5:on 6:off restorecond 0:off 1:off 2:on 3:on 4:on 5:on 6:off rpcbind 0:off 1:off 2:on 3:on 4:on 5:on 6:off rpcgssd 0:off 1:off 2:off 3:on 4:on 5:on 6:off rpcidmapd 0:off 1:off 2:off 3:on 4:on 5:on 6:off rsyslog 0:off 1:off 2:on 3:on 4:on 5:on 6:off setroubleshoot 0:off 1:off 2:off 3:on 4:on 5:on 6:off sshd 0:off 1:off 2:on 3:on 4:on 5:on 6:off udev-post 0:off 1:on 2:on 3:on 4:on 5:on 6:off Installation of iscsi initiatorYou can install the iscsi initiator now: # /etc/init.d/network start # /etc/init.d/ssh start Then sftp to somewhere, get the package and install it. Config files via tftpIf you need some special configuration (which you will, if using multipath and iSCSI), there is a way to put these on a tftp server. During boot these files are downloaded and extracted. Have a look in the contrib/tftp dir for an example. Boot into new systemRemove the 'S' from the extra line in the configuration file and start over. Happy Penguins are winking at you. ![]() |