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Live Update #34

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nuta opened this issue Nov 23, 2020 · 0 comments
Open

Live Update #34

nuta opened this issue Nov 23, 2020 · 0 comments
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@nuta
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nuta commented Nov 23, 2020

A live update feature allows updating the operating system without rebooting the computer. Unlike kernel live patch in Linux, on Resea, it might be feasible to implement complicated updates beyond bug and vulnerability fixes.

  • We can assume that the kernel does not require updates (in the future).
  • Servers have their states (e.g. global variables) and we need to save/restore during updates.
  • To enable live update, server authors would have to write some piece of code called migrations (just like DB migrations in web application frameworks) to restore the server from the previous state.

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