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Le jeu. 5 mars 2020 à 13:07, Michael <confabulate@××××××××.com> a écrit : |
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> |
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> On Thursday, 5 March 2020 09:54:01 GMT Alessandro Barbieri wrote: |
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> > I want to do a crazy thing. I want to migrate my gentoo installation from a |
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> > chroot to a VM (both on the same host). The host is debian but I can only |
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> > use SSH. What do you suggest to do? |
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> |
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> There are VMWare applications to convert a physical installation of an OS to a |
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> VM disk, but since the guest OS is linux, the way I would do it would be: |
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> |
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> 1. Create a virtual disk of the desired size. |
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> 2. Attach a LiveCD to the VM and boot with it. |
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> 3. Use the LiveCD environment to partition/format/mount the VM disk. |
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> 4. Use rsync to copy the filesystem contents from the chroot to the VM |
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> partitions. |
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> 5. Edit the copied fstab to correspond to the VM disk partition UUIDs and |
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> potentially reinstall GRUB. |
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> 6. Unmount the VM disk partitions, shutdown the VM, detatch the LiveCD and |
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> restart the VM. |
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> |
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> You could use partclone instead of rsync, which would retain the same UUIDs |
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> and filesystems as the chrooted system and therefore simplify the migration. |
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> |
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> HTH. |
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As a chroot is not a complete system, you will also have to do some |
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more actions inside the VM |
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- Compile and install a kernel [1], probably with the VMware modules |
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to get better performance. |
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- Tell Grub to include that kernel in the list of boot options [2] |
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- Check that an init system is fully configured, you can choose |
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between OpenRC or SystemD [3] |
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- Configure networking inside the VM [4] and in VMware on the host |
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- Add services like SSH to system start to be able to connect to the VM |
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|
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As you can see, this will be a mix of a fresh install and a migration |
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of your chroot. Basically you can read through the Gentoo Handbook to |
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see what steps are necessary for the VM to boot. |
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When you copy the chroot files into the VM they will overwrite files |
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from the Stage3. |
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I believe the best step to do this is just before the "Installing |
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tools" chapter, but their may be side effects I don't anticipate... |
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|
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The good thing about a VM is that if anything goes wrong, you just |
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trash it and restart ! |
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Tell us how things turn out for you. |
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|
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Best regards |
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Mickaël Bucas |
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|
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[1] https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Kernel |
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[2] https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Bootloader |
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[3] https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Base |
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[4] https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/System |
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