Ask questionsMPP pay splits into too many subpayments

I have an outbound channel with an BTC to Lightning exchange worth 2.000.000 satoshi, with enough capacity. I try to swap my 2.000.000 satoshi for the same amount, but on-chain. Lightningd splits the payment into too many subpayments, and eventually fails, even though the destination is only one hop away, and has enough capacity.


Answer questions thestick613

First time i tried this, i ended up with #3846, then with #3848 and then with #3851, and then with #3915. The logs always looked like this:

  • Detected large payment, splitting into 100 sub-payments, and then a log of entries about too many HTLCs or timeouts. I'm willing to do another test in a few days.
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