LND channels take long to get re-enabled

[kilrau]

The issue: Currently, if you take your xud setup down (with channels open to some other nodes) for >20 minutes and bring it up again, you will need to wait 19 minutes for channels to get re-enabled and swaps to work.

As per lightningnetwork/lnd#3328 (comment) we should change lnd's config, question is how.

Options
a)--chan-disable-timeout, but this will increase routing failures drastically since nodes will try to route via disabled channels
b) --chan-enable-timeout and configure the timeout to something short and check that it works in both directions. Channels get disabled after 10s but also re-enabled after 10s.
c) ?

[kilrau]

Second question is the right place to do this. xud native or docker.

[sangaman]

xud native can't set lnd command args or config flags, so this would be for the docker/simnet repos I believe.

[kilrau]

Which option do you prefer? I would vouch for b) with something like 10s, since this is the "proper" way and should work accross Simnet/Testnet/Mainnet.

[kilrau]

Decision: 10s for Simnet & Testnet. Mainnet stays with 20 mins.

[offerm]

10s chan-enable-timeout implemented in xud-simnet-start (simnet native).

Taking myself of the Assignees list. @kilrau