Drive type that the chain is on?
Discussion
On production it's a ceph cluster with is a mix of SSDs and WD Red spinny disks.
In the test environment, I think it's a WD Red, but it might be an SSD. Can't remember off the top of ny head.
Interesting. I run mine on a NVMe and it makes a huge difference. I think Spinny disc full chain sync is a month+ these days. NVMe is 48 hours or less.
I haven't dug into the details of why but Bitcoin chain ops seem to be very disc intensive.
To be clear the bitcoind server has never had any problems. It processes and stores blocks like a champ.
It's only been lnd that is troublesome.
Right but remember they are stacked. Bitcoind is the first pass at the blocks then electrs then LND each adding more IO both in terms of bandwidth and thrash.
So if bitcoind can't keep up, LND will never work. You may have split the sweet spot where Bitcoind can work but you don't have enough left over for electrs and LND to do their thing.
It seems to be keeping up just since I upgraded to 0.19.0-beta, but we will see how long that lasts...