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I am running my lnd node since about 60 days. Looking at the file channel.db, I found it grows currently about 500M per day:

btc@xxx:~/.lnd$ ls -al ./data/graph/mainnet/channel.db
-rw------- 1 btc btc 15776518144 Oct 19 14:31 ./data/graph/mainnet/channel.db

-rw------- 1 btc btc 16874332160 Oct 21 12:59 channel.db

What is in that file that needs 16GB and when will it stop growing? Running lnd 0.13.3 on i9-9900K CPU Ubuntu 20.04, bitcoin-core.

EDIT: New data from Oct 27 added:

It's now

-rw------- 1 btc btc 23279489024 Oct 27 09:20 channel.db

Growth of about 5 GB in 6 days with 2 amts forwarded and 1 new channel opened. Think I stop operating this. Someone with good alternatives to lnd?

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  • This will be an open question, by generic idea the DB should never stop growing Nov 15 '21 at 14:45
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Like vincenzopalazzo commented - it never stops growing by design. Solution is to add

db.bolt.auto-compact=true

to the lnd config. Then the db gets "compacted" (means cleaned-up here) at lnd's startup. But take care for enough disk space. Why it sometimes grows so fast could not be revealed.

The complete discussion is here: https://github.com/lightningnetwork/lnd/issues/5705

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