Ordersdb error: database is locked

[donald.m.motsinger]

What does filefrag orders.db say? I had a lot of these errors until I defragmented it.

Disk fragmentation is inevitable... Do we need to prepare?

On an almost full 3.5TB node I had a problem with a lot of “ordersdb error: database is locked” errors and 99% I/O with 4 threads. The orders.db was heavily fragmented (~180000 extends). After defragmenting all databases the I/O is back to normal and so far no more errors.