I can go in and delete the device and re-add it, and device will show Icmp Perf graph. Is there a way to fix this besides deleting, then re-adding devices one by one? I would prefer to keep historic data, but it’s not critical.
I got about 150 devices. Any devices added before November of 2025, the graph just shows empty after June 24 2026. only 18 devices are currently showing the graph, which all have been recently added in the past 8 months.
What’s weird is that all other graphs. Just the poller ping response. I checked the poller graphs and nothing seems out of the ordinary with it.
I see this difference when i run lnms device pole. 1 = old not working, 2 = new working. (same device model, sonicwall tz270)
(1 not working) Enabled graphs (12): uptime poller_modules_perf availability ping_perf netstat_udp netstat_tcp netstat_icmp netstat_icmp_info netstat_ip netstat_ip_frag netstat_snmp netstat_snmp_pkt
(2 working) Enabled graphs (12): uptime poller_modules_perf availability netstat_icmp netstat_icmp_info netstat_ip netstat_ip_frag netstat_snmp netstat_snmp_pkt netstat_udp netstat_tcp ping_perf
===========================================
| Component | Version |
|---|---|
| LibreNMS | 26.7.0 (2026-07-20T11:51:00-04:00) |
| DB Schema | 2026_07_17_140739_change_interference_to_small_int_access_points_table (394) |
| PHP | 8.3.6 |
| Python | 3.12.3 |
| Database | MariaDB 10.11.14-MariaDB-0ubuntu0.24.04.1 |
| RRDTool | 1.7.2 |
| SNMP | 5.9.4.pre2 |
| =========================================== |
[OK] Composer Version: 2.10.2
[OK] Dependencies up-to-date.
[OK] Database Connected
[OK] Database Schema is current
[OK] SQL Server meets minimum requirements
[OK] lower_case_table_names is enabled
[OK] MySQL engine is optimal
[OK] Database and column collations are correct
[OK] Database schema correct
[OK] MySQL and PHP time match
[OK] Active pollers found
[OK] Dispatcher Service not detected
[OK] Locks are functional
[OK] Python poller wrapper is polling
[OK] Redis is unavailable
[OK] rrd_dir is writable
[OK] rrdtool version ok