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Monitoring.md

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+## Monitoring if zfs-autobackup succeeds
+
+On completion, zfs-autobackup returns an exit code:
+
+* `0`: Everything went fine, no important errors.
+* `x`: Snapshotting was ok, but there are `x` datasets that aborted with a fatal error.
+* `255`: Wrong options or other major failure, probably nothing succeeded. 
+
+### Output
+
+Without `--verbose` or `--debug`, zfs-autobackup only echos (zfs) errors and warnings to stderr. Complete silence means everything is fine.
+
+If it detects a tty it will output progress updates to stdout.
+
+
+## Monitoring example with Zabbix-jobs
+
+You can monitor backups by using my zabbix-jobs script. (<https://github.com/psy0rz/stuff/tree/master/zabbix-jobs>)
+
+Put this command directly after the zfs_backup command in your cronjob:
+
+```console
+zabbix-job-status backup_smartos01_fs1 daily $?
+```
+
+This will update the zabbix server with the exit code and will also alert you if the job didn't run for more than 2 days.