On-demand backup only when channel state changes

[meeDamian]

See: https://gist.github.com/alexbosworth/2c5e185aedbdac45a03655b709e255a3

Is the image the place to incorporate backups?

Theoretically, the final stage here could also trigger backups after each new channel open, and always write a new backup file to an extra volume.

Alternatively, the host system does it since all necessary files are in an exposed volume already.

I think I'd lean towards the host OS handling it.

[AnotherDroog]

I think I'd lean towards the host OS handling it.

100%

I'm going to check that we have inotify, that's better than polling.

Otherwise, doesn't LND have an API endpoint that can notify us of changes requiring a new backup?

[nolim1t]

It doesn’t I believe.. maybe we can ask the lnd guys

[meeDamian]

Honestly, I didn't think that this endpoint existed… But it does: https://github.com/lightningnetwork/lnd/blob/master/lnrpc/rpc.proto#L760-L770 :) That's pretty cool!

Still, that belongs to some management utility, and not this general container. Let's close/move the issue.

[AnotherDroog]

Backup functionality makes sense as a manual CLI command and API function of noma.

Details could use further discussion