Switch zone space exhausted from logs

We found a switch zone that looked like this

# zfs list rpool/zone/oxz_switch
NAME                    USED  AVAIL     REFER  MOUNTPOINT
rpool/zone/oxz_switch  2.97G  4.82M     2.97G  /zone/oxz_switch

due to this

-rw-r--r--   1 root     root     1703936 May  8 07:30 oxide-dendrite:default.log.0
drwxr-xr-x   2 root     sys          132 May  8 07:30 .
-rw-r--r--   1 root     root      393216 May  8 07:15 oxide-dendrite:default.log.1
-rw-r--r--   1 root     root     1441792 May  8 07:00 oxide-dendrite:default.log.2
-rw-r--r--   1 root     root     1383575 May  8 06:47 oxide-mg-ddm:default.log
-rw-r--r--   1 root     root     14286848 May  8 06:45 oxide-dendrite:default.log.3
-rw-r--r--   1 root     root     29766746 May  8 06:45 oxide-wicketd:default.log
-rw-r--r--   1 root     root      289898 May  8 06:45 oxide-pumpkind:default.log
-rw-r--r--   1 root     root     3612606464 May  8 06:31 oxide-dendrite:default.log.4
-rw-r--r--   1 root     root     4185253382 May  8 06:31 oxide-dendrite:default.log
-rw-r--r--   1 root     root     80839571 May  8 06:31 oxide-mgd:default.log
-rw-r--r--   1 root     root     61343803 May  8 06:31 oxide-mgs:default.log
-rw-r--r--   1 root     root     40323877 May  8 06:31 oxide-tfport:default.log
-rw-r--r--   1 root     root     2709568 May  8 06:26 oxide-lldpd:default.log
-rw-r--r--   1 root     root     4195630867 May  8 06:15 oxide-dendrite:default.log.5
-rw-r--r--   1 root     root     4203580961 May  8 06:00 oxide-dendrite:default.log.6
-rw-r--r--   1 root     root     4194655483 May  8 05:45 oxide-dendrite:default.log.7
-rw-r--r--   1 root     root     4196811310 May  8 05:30 oxide-dendrite:default.log.8
-rw-r--r--   1 root     root     4177313624 May  8 05:15 oxide-dendrite:default.log.9
-rw-r--r--   1 root     root     115733711 May  8 05:15 oxide-mgs:default.log.0
-rw-r--r--   1 root     root     107470637 May  8 05:00 oxide-mgd:default.log.0
-rw-r--r--   1 root     root     4191302754 May  8 05:00 oxide-dendrite:default.log.10
-rw-r--r--   1 root     root     4188813289 May  8 04:45 oxide-dendrite:default.log.11
-rw-r--r--   1 root     root     4222101031 May  8 04:30 oxide-dendrite:default.log.12

A sample log file can be found at /staff/core/dendrite-226. Due to production urgency we needed to move quickly with this one so that is all I have at the moment.

Start by examining the sample log at /staff/core/dendrite-226 and tracing how switch-zone service logs are configured and rotated. Done should mean log growth is bounded so a switch zone cannot be exhausted by service logs; the issue does not name source files or tests to run.