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On Mon, Feb 17, 2020 at 6:00 PM Nikos Chantziaras <realnc@×××××.com> wrote: |
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> |
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> On 17/02/2020 21:46, Rich Freeman wrote: |
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> > |
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> > Well, if you decide to play with it I'll offer up: |
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> > https://rich0gentoo.wordpress.com/2014/07/14/quick-systemd-nspawn-guide/ |
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> |
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> Hm. I'm too chicken to try it because I'm not sure it does what I think |
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> it does, but does the "--ephemeral" option pretty much do *exactly* what |
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> Dale was asking about? Can you start your current "/" as a container |
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> as-is, emerge packages in it and save them as binaries, then install |
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> those from the outside, then shutdown the container and all is forgotten? |
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You know, I think that might actually work. |
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Note that it depends on reflinks or snapshots for efficient operation, |
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and I'm not sure what the full list of supported filesystems are. |
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They do mention btrfs. I'm not sure if zfs is supported (zfs supports |
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snapshots but clones would be needed here and those have some |
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limitations, and zfs does not support reflinks). |
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You'd obviously have to bind-mount your binary package directory - I |
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think you could do that even using the same root as this would enable |
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writes to that one path to escape the mount namespace and get into |
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your host filesystem. |
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Obvious way to test this would be to just set up a VM. It has the |
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obvious advantage of always being in-sync with your host config. |
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I think I might actually try playing around with this. I'm on zfs |
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though so I'm not sure how it will perform. |
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-- |
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Rich |
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