Add an option to enable/disable DTrace without disabling ZFS. New
architectures such as CHERI may support ZFS before they support DTrace
and the old model of WITHOUT_CDDL disabling both wasn't helpful.
For compatiblity, the CDDL option remains and WITHOUT_CDDL implies
WITHOUT_DTRACE. WITHOUT_DTRACE also implies WITHOUT_CTF.
As part of this change, largely convert cddl/*/Makefile to using the
more compact SUBDIR.${MK_<FOO>}+= form rather than using intermediate
variables.
Reviewed by: markj
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D35718
From the zpool_influxdb.8 manual page:
zpool_influxdb produces InfluxDB-line-protocol-compatible metrics from
zpools. Like the zpool command, zpool_influxdb reads the current pool
status and statistics. Unlike the zpool command which is intended for
humans, zpool_influxdb formats the output in the InfluxDB line protocol.
The expected use is as a plugin to a metrics collector or aggregator,
such as Telegraf.
zpool_influxdb is installed into /usr/libexec/zfs/
Differential revision: https://reviews.freebsd.org/D31094
MFC after: 3 days
