siad is constantly writing ~200 KiB to disk when 'host' module is enabled
I've setup siad and already host ~5GiB. I noticed that siad is constantly performing write operations.
Total DISK READ : 904.36 K/s | Total DISK WRITE : 239.43 K/s
Actual DISK READ: 904.36 K/s | Actual DISK WRITE: 344.83 K/s
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND
287 be/4 sia 208.20 K/s 39.04 K/s 0.00 % 9.93 % siad -d /var/lib/sia
1272 be/4 sia 19.52 K/s 23.42 K/s 0.00 % 5.81 % siad -d /var/lib/sia
274 be/4 sia 42.94 K/s 46.84 K/s 0.00 % 4.88 % siad -d /var/lib/sia
383 be/4 sia 0.00 B/s 65.06 K/s 0.00 % 4.25 % siad -d /var/lib/sia
1274 be/4 sia 0.00 B/s 52.05 K/s 0.00 % 4.02 % siad -d /var/lib/sia
296 be/4 bitcoin 633.70 K/s 0.00 B/s 0.97 % 2.01 % bitcoind -daemon -con~.pid [bitcoin-msghand]
343 be/4 sia 0.00 B/s 13.01 K/s 0.00 % 0.00 % siad -d /var/lib/sia
1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % systemd --system --deserialize 20
2 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.
The blockchain is fully synced. While it would be great, I doubt that there are constants file uploads going on, as my storage's folder used space does not grow.
Compare this to bitcoind running on the same system, which mostly performs reads and occasional writes (e.g. when a new block is found).
Why does siad constantly write ~200 KiB/s to disk?