Bitcoin Core developers have been trying to squash a cockroach of a bug that has bothered full node operators since 2020. This month, it seems like they might have finally exterminated the pesky disk fill attack once and for all.

The disk fill attack physically annoys the machines that operate full nodes. Attackers use commands like LogPrintf, LogInfo, LogWarning, or LogError to force the hard drives of victims to excessively write superfluous data to disk.

Especially for cheap or older nodes that use non-flash storage with a spinning disk, this excessive logging overwhelms their hard drives, filling it with pointless data.

Even for storage drives that use flash storage, excessive writes degrade the disk and can even crash the machine altogether.

...read more at protos.com