hb.disk

Minimal configlet:

[hb#1]
type = disk
dev = /dev/mapper/36589cfc000000e03957c51dabab8373a

Minimal setup command:

om test/ccfg/foo set \
	--kw="type=disk" \
	--kw="dev=/dev/mapper/36589cfc000000e03957c51dabab8373a"

addr

required:    false
scopable:    true
default:     The ipaddr resolved for the nodename.

Example:

addr = 1.2.3.4

The addr to use to connect a peer. Use scoping to define each non-default address.

dev

required:    true
scopable:    true

Example:

dev = /dev/mapper/36589cfc000000e03957c51dabab8373a

The device to write the heartbeats to and read from.

It must be,

• Dedicated to the daemon use.
• Sized 1MB for metadata + 1MB/node.

interval

required:    false
scopable:    true
default:     5s
convert:     duration

The maximum interval between 2 heartbeat payload sends.

The actual interval is not fixed, because the daemon tries to send the message as soon as it has something to notify. A minimum interval protects the node from saturating the network and cpu with the daemon synchronization workload.

timeout

required:    false
scopable:    true
default:     15s
convert:     duration

The delay since the last received heartbeat from a node before considering this node is gone.

type

required:    true
scopable:    false
candidates:  unicast, multicast, disk, relay

The heartbeat driver name.