Prevent mfs corruption

[achingbrain]

I think we need a mechanism for js-ipfs components to prevent the process from exiting until they've finished a bit of critical work (could show a CTRL-C to force quit kind of message).

My concern is that if mfs is interrupted while writing the root hash to the level datastore, it'll potentially not be able to read the hash on the next startup which would show the user an empty directory.

[alanshaw]

Received interrupt signal, shutting down...
(Hit ctrl-c again to force-shutdown the daemon.)

Like go-ipfs?

[grantlouisherman]

Hey @alanshaw could I take this one?

[alanshaw]

@grantlouisherman you are welcome to have a go at this, but the issues labelled "help wanted" might be slightly more appropriate for new contributors https://github.com/ipfs/js-ipfs/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22

In particular I'd love to see #1867 implemented.

[SgtPooki]

js-ipfs is being deprecated in favor of Helia. You can #4336 and read the migration guide.

Please feel to reopen with any comments by 2023-06-02. We will do a final pass on reopened issues afterwards (see #4336).

This issue is most likely resolved in Helia, please try it out!