pfSense became unresponsive, then no DNS resolution after reboot

Sherwatt

@stephenw10 I asked ChatGPT the same question as in my previous post and after a short chat it turns out it is ZFS:

$ zpool status -v
  pool: pfSense
 state: ONLINE
config:

	NAME        STATE     READ WRITE CKSUM
	pfSense     ONLINE       0     0     0
	  mmcsd0p4  ONLINE       0     0     0

errors: No known data errors

Is there anything else I could use to retroactively diagnose the problem? I already fed the boot log to ChatGPT to look for errors, but it didn't find anything scary. Should I share it with you and if yes, is pasting it in a post acceptable?

stephenw10

Then you can run a zfs pool scrub: zpool scrub pfSense
https://docs.netgate.com/pfsense/en/latest/troubleshooting/filesystem-check.html

You can upload the logs here and I can look at them:
https://nc.netgate.com/nextcloud/s/zgpTGfKio3Fa5eb

Sherwatt

@stephenw10 Thank you. I uploaded boot.txt.

[2.7.2-RELEASE][admin@pfSense.lan.mydomain.com]/root: zpool scrub pfSense
[2.7.2-RELEASE][admin@pfSense.lan.mydomain.com]/root: zpool status
  pool: pfSense
 state: ONLINE
  scan: scrub repaired 0B in 00:00:10 with 0 errors on Wed Mar 19 15:11:17 2025
config:

        NAME        STATE     READ WRITE CKSUM
        pfSense     ONLINE       0     0     0
          mmcsd0p4  ONLINE       0     0     0

errors: No known data errors

stephenw10

That's just the boot log from after the outage happened.

We need to see the system covering the event. So from at least some hours before until and including the reboot.

You should disable the on-board audio device though. It just uses resources and does nothing in pfSense.

hdacc0: <Intel Jasper Lake HDA CODEC> at cad 2 on hdac0
hdaa0: <Intel Jasper Lake Audio Function Group> at nid 1 on hdacc0

Sherwatt

@stephenw10 Thank you for looking into my issue. I uploaded system.log twice, because I messed up the first one. I guess this is what I should be looking at, right? (from /var/log).
I think the issue happened around 17:45 (March 18). I left my computer around 17:40 and when came back pfSense was dead.

I should disable the audio device in UEFI, right?

stephenw10

@Sherwatt said in pfSense became unresponsive, then no DNS resolution after reboot:

I should disable the audio device in UEFI, right?

Yup somewhere in the EFI/BIOS setup you should be able to disable it completely.

stephenw10

Mmm, nothing really shown in the logs at all:

Mar 18 17:17:00 pfSense sshguard[62427]: Now monitoring attacks.
Mar 18 17:26:00 pfSense sshguard[62427]: Exiting on signal.
Mar 18 17:26:00 pfSense sshguard[44994]: Now monitoring attacks.
Mar 18 17:35:00 pfSense sshguard[44994]: Exiting on signal.
Mar 18 17:35:00 pfSense sshguard[31294]: Now monitoring attacks.
Mar 18 17:44:00 pfSense sshguard[31294]: Exiting on signal.
Mar 18 17:44:00 pfSense sshguard[11995]: Now monitoring attacks.
Mar 18 17:47:09 pfSense syslogd: exiting on signal 15
Mar 18 17:48:38 pfSense syslogd: kernel boot file is /boot/kernel/kernel
Mar 18 17:48:38 pfSense kernel: ---<<BOOT>>---
Mar 18 17:48:38 pfSense kernel: Copyright (c) 1992-2023 The FreeBSD Project.
Mar 18 17:48:38 pfSense kernel: Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
Mar 18 17:48:38 pfSense kernel:         The Regents of the University of California. All rights reserved.
Mar 18 17:48:38 pfSense kernel: FreeBSD is a registered trademark of The FreeBSD Foundation.
Mar 18 17:48:38 pfSense kernel: FreeBSD 14.0-CURRENT amd64 1400094 #1 RELENG_2_7_2-n255948-8d2b56da39c: Wed Dec  6 20:45:47 UTC 2023
Mar 18 17:48:38 pfSense kernel:     root@freebsd:/var/jenkins/workspace/pfSense-CE-snapshots-2_7_2-main/obj/amd64/StdASW5b/var/jenkins/workspace/pfSense-CE-snapshots-2_7_2-main/sources/FreeBSD-src-RELENG_2_7_2/amd64.amd64/sys/pfSense amd64
Mar 18 17:48:38 pfSense kernel: FreeBSD clang version 16.0.6 (https://github.com/llvm/llvm-project.git llvmorg-16.0.6-0-g7cbf1a259152)

If nothing is logged at reboot like that it can be a hardware issue.

I assume you didn't see a crash report after rebooting? It doesn't look like you have SWAP configured so you wouldn't see one if it panicked.

Sherwatt

@stephenw10 Thank you for your time looking into the logs. I did not see any crash reports. Do you think I should configure swap in pfSense in case this happens again?

stephenw10

You would need to re-install to do so. But that would then give you a crash report if it was the result of a kernel panic.

Sherwatt

@stephenw10 Then I'm just going to stick with my current setup and see if there is anything on the console the next time this happens, if happens.
Thank you for your help, much appreciated!