OH4.3.4-release / openHABian: deletes rrd4j completely, no more var/log/openhab

Setup, Configuration and Use Migration
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1

Thought I would create a new thread instead of doing this in the 4.3 release one.

first off: I updated a openHABian-based 4.3.3-release installation (Pi4/4GB) from within openhabian (menu 02):

  1. after restarting OH4 during update, there are no more rrd4j-based historic states.
  2. all sub-directories I created in the persistence directories (I purposely copied my /srv/openhab-userdata/persistence/rrd4j into /srv/openhab-userdata/persistence/BACKUP_rrd4j before updating!) are gone.

I also deactivated ZRAM with menu 38 - Uninstall zram before updating, because I do have A LOT of items: 1455. So ZRAM should not be the issue.
except:

  1. the logfiles are NOT in /var/log/openhab/ anymore, the ./openhab directory does not exist anymore.
  2. there IS indeed item changes/updates in the now built in openhab GUI, but no openhab.log entries
  3. there really is no logging anymore:
openhabian@openHABMain:~ $ sudo find / -name openhab.log -ls
   399927    276 -rw-r--r--   1 openhab  openhab    278695 Dec  8 12:13 /var/lib/openhab/logs/openhab.log
       39   3204 -rw-r--r--   1 openhab  openhab   3280099 Apr  3 09:07 /opt/zram/zram2/upper/openhab/openhab.log
   399927    276 -rw-r--r--   1 openhab  openhab    278695 Dec  8 12:13 /srv/openhab-userdata/logs/openhab.log
openhabian@openHABMain:~ $ sudo find / -name events.log -ls
   399934   1684 -rw-r--r--   1 openhab  openhab   1722400 Dec  8 12:13 /var/lib/openhab/logs/events.log
       97  15664 -rw-r--r--   1 openhab  openhab  16032458 Apr  3 09:06 /opt/zram/zram2/upper/openhab/events.log
   399934   1684 -rw-r--r--   1 openhab  openhab   1722400 Dec  8 12:13 /srv/openhab-userdata/logs/events.log
openhabian@openHABMain:~ $ date
Thu Apr  3 09:48:55 AM CEST 2025

as you can see, somehow there’s still logs in /opt/zram? but they stopped after I uninstalled ZRAM via openHABian.

in conclusion:

  • I do get rrd-updates since restart
  • I don’t get any logs (and subsequently my ELK-stack doesn’t get updated)
  • OH seems to not use ZRAM, with ZRAM still somehow active in the system:
openhabian@openHABMain:~ $ df
Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/root       30189212 15691040  13227136  55% /
devtmpfs         1933400        0   1933400   0% /dev
tmpfs            1968248     1320   1966928   1% /dev/shm
tmpfs             787300     9852    777448   2% /run
tmpfs               5120        0      5120   0% /run/lock
/dev/mmcblk0p1    258095    51430    206665  20% /boot
/dev/zram1        738048   520752    163536  77% /opt/zram/zram1
/dev/zram2        996780    76008    851960   9% /opt/zram/zram2
tmpfs             393648        0    393648   0% /run/user/1000

Is there anything I can do to regain at least the logs?
oh, OH4.3.4 seems to run, the rules should’ve all fired as expected - but I have no means to check as there’s no logs with no ERRORs/WARNs/…, but only item changes.

edit 1:
after a reboot at least it seems, all ZRAM is gone:

openhabian@openHABMain:/var/log $ df
Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/root       30189212 15330396  13587780  54% /
devtmpfs         1933400        0   1933400   0% /dev
tmpfs            1968248     1304   1966944   1% /dev/shm
tmpfs             787300     9876    777424   2% /run
tmpfs               5120        0      5120   0% /run/lock
/dev/mmcblk0p1    258095    51430    206665  20% /boot
tmpfs             393648        0    393648   0% /run/user/1000

but still: no /var/log/openhab-directory and no logfile anywhere:

openhabian@openHABMain:/var/log $ sudo find / -name events.log -ls
[sudo] password for openhabian:
   399934   1684 -rw-r--r--   1 openhab  openhab   1722400 Dec  8 12:13 /var/lib/openhab/logs/events.log
   399934   1684 -rw-r--r--   1 openhab  openhab   1722400 Dec  8 12:13 /srv/openhab-userdata/logs/events.log

edit 2
it even purged all other logfiles, e.g. my zabbig-agent crashed as it no longer had access to /var/log/zabbix-agent/zabbix_agentd.log:

openhabian@openHABMain:/var/log $ sudo systemctl status zabbix-agent.service
× zabbix-agent.service - Zabbix Agent
     Loaded: loaded (/lib/systemd/system/zabbix-agent.service; enabled; preset: enabled)
     Active: failed (Result: exit-code) since Thu 2025-04-03 10:04:37 CEST; 20s ago
   Duration: 23ms
       Docs: man:zabbix_agentd
    Process: 4462 ExecStart=/usr/sbin/zabbix_agentd --foreground (code=exited, status=1/FAILURE)
   Main PID: 4462 (code=exited, status=1/FAILURE)
        CPU: 20ms

Apr 03 10:04:37 openHABMain systemd[1]: Started zabbix-agent.service - Zabbix Agent.
Apr 03 10:04:37 openHABMain zabbix_agentd[4462]: zabbix_agentd [4462]: cannot open log: unable to open log file [/var/log/zabbix-agent/zabbix_agentd.log]: [2] No such file or directory
Apr 03 10:04:37 openHABMain zabbix_agentd[4462]: Starting Zabbix Agent [openHABMain]. Zabbix 6.0.14 (revision 3f184b456c7).
Apr 03 10:04:37 openHABMain zabbix_agentd[4462]: Press Ctrl+C to exit.
Apr 03 10:04:37 openHABMain systemd[1]: zabbix-agent.service: Main process exited, code=exited, status=1/FAILURE
Apr 03 10:04:37 openHABMain systemd[1]: zabbix-agent.service: Failed with result 'exit-code'.
2

This looks like an openHABian issue. You might add that to the tags and title.

Given my limited knowledge and what is shown here, it looks like removal of the zram didn’t fix all the links and file structure back to what it should be, or something like that.

3

ok, I added openHABian, but it did delete all structure on non-ZRAM directories, which is a complete no-go! :roll_eyes:
Don’t think openHABian did that, but then again, I only moved within openHABian menu…