Server configuration

Options

Backend configuration

ioprio (ionice) for background threads

Starting from v2.27.4.1 ioprio for background threads like defrag, periodic etc. can be specified via backends' config section by two parameters:

• bg_ioprio_class - one of:
  • 0 — IOPRIO_CLASS_NONE
  • 1 — IOPRIO_CLASS_RT
  • 2 — IOPRIO_CLASS_BE
  • 3 — IOPRIO_CLASS_IDLE
• bg_ioprio_data - priority level within class specified in bg_ioprio_class

For more details, please read http://man7.org/linux/man-pages/man2/ioprio_set.2.html

If bg_ioprio_* parameters aren't specified, background threads will inherit them from dnet_ioserv process.

NB! ioprio will have no effect if underlying devices isn't configured with CFQ io scheduler