Write to disk on next block after tip disconnected

[blondfrogs]

When a node shutdowns ungracefully. Sometimes (not deterministically) its state can get corrupted.

This change should allow the node to save a known good state after it adds a block after an orphan.

Also remove logs that are no longer needed.

[MorningLightMountain713]

I have some changes that I'm running on a custom build for Arcane:

• Disable starting / stopping of fluxbenchd based on an env var. I.e. if we're running on Arcane, let systemd manage fluxbenchd.
• Bump libevent dep so fluxd will build on Ubuntu 24.04

The above is incorporated into the Arcane build already... but I would rather be installing via normal channels.
It probably makes more sense to expose the fluxbenchd control via a configuration option (which I can add)

I'm assuming it would make sense to do a separate PR and get this merged before the next release

Let me know your thoughts thanks.

[Cabecinha84]

I have some changes that I'm running on a custom build for Arcane:

• Disable starting / stopping of fluxbenchd based on an env var. I.e. if we're running on Arcane, let systemd manage fluxbenchd.
• Bump libevent dep so fluxd will build on Ubuntu 24.04

The above is incorporated into the Arcane build already... but I would rather be installing via normal channels. It probably makes more sense to expose the fluxbenchd control via a configuration option (which I can add)

I'm assuming it would make sense to do a separate PR and get this merged before the next release

Let me know your thoughts thanks.

yes, let's have a separate PR for that, once it's done let me know and add all of as as reviewers. Thank you.

[Cabecinha84]

Ack