X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=README;h=bbf5742267de6dd91c572aa86348c1d3f9769eea;hb=52433696d9755eb0e6cc5caa0f35b6690ace67fd;hp=30afc68c3a0f5489de54fcb4f52463700abe868a;hpb=cc7a490c49e75e0c0b29098f212ed3c0f3f73612;p=virt-p2v.git diff --git a/README b/README index 30afc68..bbf5742 100644 --- a/README +++ b/README @@ -8,3 +8,108 @@ Written by: Copyright (C) 2007 Red Hat Inc. + http://et.redhat.com/~rjones/virt-p2v/ + +Binaries +---------------------------------------------------------------------- + +Binaries are available from the website (live CD images which can be +burned directly to a CD and booted on the p2v candidate machine). + +http://et.redhat.com/~rjones/virt-p2v/ + +Building +---------------------------------------------------------------------- + +Requirements: + * livecd-creator (on Fedora the package is 'livecd-tools') + * qemu (only for testing) + +(1) Edit Makefile - there is some general configuration at the + top which you may want to change. + +(2) 'make build' will build an ISO image called virt-p2v-$VERSION.iso + +(3) Burn the image on to a CD using standard tools. + +Booting from USB device +---------------------------------------------------------------------- + +If you wish to boot from a USB keydrive, use the livecd-iso-to-disk +tool: + + livecd-iso-to-disk virt-p2v-$VERSION.iso /dev/sdX1 + +(Replace /dev/sdX1 with the actual USB device). + +In my experience I also had to set up a suitable MBR: + + cat /usr/lib/syslinux/mbr.bin > /dev/sdX + +Running +---------------------------------------------------------------------- + +Boot the candidate machine from the live CD or USB keydrive. + +You will need to have network access to another machine where it will +save the virtual disk images. Ideally that machine will have ssh +access (sshd service running), but there is also a simple network +daemon that you can run on the target machine. Note that the target +machine is usually the Xen host, but it doesn't need to be: you could +copy the images to a staging machine, and later copy them over to the +Xen host. + +Note that the live CD doesn't modify any data on the candidate +machine. + +Answer the questions. There is a tutorial and explanation of some of +the questions on the website which you may wish to follow: +http://et.redhat.com/~rjones/virt-p2v/ + +While the live CD is booted a shell is available on other virtual +consoles. Go to a virtual console using [ALT] [F2] and log in as root +with no password. + +If it works, the result will be disk images for each filesystem from +the candidate machine, which should boot directly or with the minimum +of changes. + +Booting P2V candidate under Xen +---------------------------------------------------------------------- + + +Testing +---------------------------------------------------------------------- + +If you want to test the live CD without actually P2V-ing a real +server, then you can run the ISO directly in qemu. (To do any sort of +realistic testing you will also need an operating system image, +eg. from /var/lib/xen/images, to experiment with). For example: + + $ cp /var/lib/xen/images/rhel5gax32fv.img . + $ make boot HDA=rhel5gax32fv.img + qemu -m 512 -cdrom virt-p2v-0.1.iso -boot d -hda rhel5gax32fv.img + + +TCP transport and network daemon +---------------------------------------------------------------------- + +The preferred transport is ssh, but if you cannot use this then there +is an alternate TCP transport. (This transport is not encrypted). + +On the Xen host or staging server, install NetCat (the 'nc' command, +in Fedora and RHEL the package is also called 'nc'). + +Choose a free port number and make sure that it is not firewalled. + +Then run: + + nc -kl PORT > disks + +where PORT is replaced by the port number chosen above. + +After p2v has completed the 'disks' file will contain compressed +images of one or more disks. There is a Perl script called +virt-p2v-unpack which can unpack the file: + + virt-p2v-unpack disks