ZRAM issues

i have a similar problem. :neutral_face:
system was set up a week ago (openhabian), zram was installed during unattended setup (no re-install):

###############################################################################
###############  ohab3  #######################################################
###############################################################################
##   Release = Raspbian GNU/Linux 10 (buster)
##    Kernel = Linux 5.10.52-v7l+
##  Platform = Raspberry Pi 4 Model B Rev 1.1
##    Uptime = 0 day(s). 16:38:6
## CPU Usage = 0% avg over 4 cpu(s) (4 core(s) x 1 socket(s))
##  CPU Load = 1m: 0.56, 5m: 0.24, 15m: 0.12
##    Memory = Free: 2.33GB (61%), Used: 1.46GB (39%), Total: 3.79GB
##      Swap = Free: 0.53GB (100%), Used: 0.00GB (0%), Total: 0.53GB
##      Root = Free: 2.90GB (43%), Used: 3.77GB (57%), Total: 7.00GB
##   Updates = 12 apt updates available.
##  Sessions = 2 session(s)
## Processes = 139 running processes of 32768 maximum processes
###############################################################################

                          _   _     _     ____   _
  ___   ___   ___   ___  | | | |   / \   | __ ) (_)  ____   ___
 / _ \ / _ \ / _ \ / _ \ | |_| |  / _ \  |  _ \ | | / _  \ / _ \
| (_) | (_) |  __/| | | ||  _  | / ___ \ | |_) )| || (_) || | | |
 \___/|  __/ \___/|_| |_||_| |_|/_/   \_\|____/ |_| \__|_||_| | |
      |_|                          3.2.0.M1 - Milestone Build

today the daily amanda backup mail was missing in my inbox so i checked frontail logs but it was empty. had the same problem on my old setup (2.5.x)

i’m not sure if this is the same issue as it is mentioned here, because my system doesn’t say /var/log 100%:

openhabian@ohab3:~ $ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/root       7.1G  3.8G  3.0G  57% /
devtmpfs        1.7G     0  1.7G   0% /dev
tmpfs           1.9G     0  1.9G   0% /dev/shm
tmpfs           1.9G   26M  1.9G   2% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           1.9G     0  1.9G   0% /sys/fs/cgroup
/dev/sda3       7.3G  272M  6.7G   4% /storage
/dev/mmcblk0p1  253M   49M  204M  20% /boot
/dev/zram1      324M  177M  123M  60% /opt/zram/zram1
overlay1        324M  177M  123M  60% /var/lib/openhab/persistence
/dev/zram2      324M   28M  271M  10% /opt/zram/zram2
overlay2        324M   28M  271M  10% /var/lib/influxdb
/dev/zram3      420M   11M  379M   3% /opt/zram/zram3
overlay3        420M   11M  379M   3% /var/log
tmpfs           389M     0  389M   0% /run/user/1000

i guess this is normal with zram?

openhabian@ohab3:~ $ cat /var/log/openhab/openhab.log
cat: /var/log/openhab/openhab.log: No such file or directory

zram:

openhabian@ohab3:~ $ zramctl
NAME       ALGORITHM DISKSIZE   DATA COMPR  TOTAL STREAMS MOUNTPOINT
/dev/zram3 zstd          450M  25.9M  2.1M    13M       4 /opt/zram/zram3
/dev/zram2 zstd          350M  91.4M 56.7M  65.2M       4 /opt/zram/zram2
/dev/zram1 zstd          350M 212.2M  3.5M 105.8M       4 /opt/zram/zram1
/dev/zram0 lzo-rle       450M     4K   86B     4K       4 [SWAP]
openhabian@ohab3:~ $ zramctl --version
zramctl from util-linux 2.33.1

ztab:

# swap  alg             mem_limit       disk_size       swap_priority   page-cluster    swappiness
swap    lzo-rle         200M            450M            75              0               80

# dir   alg             mem_limit       disk_size       target_dir                      bind_dir
dir     zstd            150M            350M            /var/lib/openhab/persistence    /persistence.bind
dir     zstd            150M            350M            /var/lib/influxdb               /influxdb.bind

# log   alg             mem_limit       disk_size       target_dir              bind_dir                oldlog_dir
log     zstd            200M            450M            /var/log                /log.bind

while setting up the system i had a problem with influxdb (solved here), but i don’t know if this is relevant… journal -xe brings has many lines that are connected to influxdb…:

-- Logs begin at Sun 2021-08-08 20:34:36 CEST, end at Mon 2021-08-09 13:20:02 CEST. --
Aug 09 12:29:30 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:12:29:30 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" ae76cca9-f8fc-11eb-8098-dca6322f7bc3 1022
...
...
... (lots of entries)
Aug 09 13:19:18 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:18 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" a32c866d-f903-11eb-8426-dca6322f7bc3 10
Aug 09 13:19:19 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:19 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" a4030c77-f903-11eb-8427-dca6322f7bc3 12
Aug 09 13:19:32 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:32 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" aba7d64f-f903-11eb-8428-dca6322f7bc3 11
Aug 09 13:19:33 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:33 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" ac22bffa-f903-11eb-8429-dca6322f7bc3 10
Aug 09 13:19:34 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:34 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" ad17c095-f903-11eb-842a-dca6322f7bc3 11
Aug 09 13:19:38 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:38 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" af02cf8f-f903-11eb-842b-dca6322f7bc3 14
Aug 09 13:19:39 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:39 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" af9c438b-f903-11eb-842c-dca6322f7bc3 96
Aug 09 13:19:41 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:41 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" b0ceaa2c-f903-11eb-842d-dca6322f7bc3 25
Aug 09 13:19:43 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:43 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" b210bd4e-f903-11eb-842e-dca6322f7bc3 19
Aug 09 13:19:44 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:44 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" b2aa51bb-f903-11eb-842f-dca6322f7bc3 10
Aug 09 13:19:44 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:44 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" b2f75cda-f903-11eb-8430-dca6322f7bc3 19
Aug 09 13:19:47 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:47 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" b494f275-f903-11eb-8431-dca6322f7bc3 15
Aug 09 13:19:50 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:50 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" b67eaa39-f903-11eb-8432-dca6322f7bc3 19
Aug 09 13:19:57 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:57 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" ba429a5d-f903-11eb-8433-dca6322f7bc3 28
Aug 09 13:19:57 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:57 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" ba52f7f4-f903-11eb-8434-dca6322f7bc3 22
Aug 09 13:19:58 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:58 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" bafbd76e-f903-11eb-8435-dca6322f7bc3 10
Aug 09 13:19:59 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:19:59 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" bbf0fadf-f903-11eb-8436-dca6322f7bc3 15
Aug 09 13:20:00 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:20:00 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" bc5c9839-f903-11eb-8437-dca6322f7bc3 11
Aug 09 13:20:01 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:20:01 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" bcb8e0d9-f903-11eb-8438-dca6322f7bc3 17
Aug 09 13:20:01 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:20:01 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" bccc562b-f903-11eb-8439-dca6322f7bc3 20
Aug 09 13:20:02 ohab3 influxd-systemd-start.sh[723]: [httpd] 127.0.0.1 - openhab [09/Aug/2021:13:20:02 +0200] "POST /write?db=openhab&rp=autogen&precision=n&consistency=one HTTP/1.1 " 204 0 "-" "okhttp/3.14.4" bd56b40f-f903-11eb-843a-dca6322f7bc3 13

journal -xe says there are 1129 lines, most of these lines look like those above…

as i also had problems with amanda i also checked amanda:

[13:24:07] backup@ohab3:~$ amcheck openhab-dir
amcheck: critical (fatal): create debug directory "/var/log/amanda/server/": Permission denied
amcheck: create debug directory "/var/log/amanda/server/": Permission denied
[13:24:14] backup@ohab3:~$ amreport openhab-dir
amreport: critical (fatal): create debug directory "/var/log/amanda/server/": Permission denied
amreport: create debug directory "/var/log/amanda/server/": Permission denied

this is not my operative setup so i haven’t made a reboot, but if it’s the same as on my operative setup (2.5) a reboot would solve the problem for 2 or 3 days…

if my problem is not connected to this thread please tell me, so i can open a new one!

edit:
something’s wrong with mosquitto, too (i can tail logs via console):

20:03:26.015 [INFO ] [del.core.internal.ModelRepositoryImpl] - Loading model 'mqtt.things'
20:03:26.109 [INFO ] [hab.event.ThingStatusInfoChangedEvent] - Thing 'mqtt:broker:mosq' changed from OFFLINE (COMMUNICATION_ERROR): io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:1883 to OFFLINE
20:03:26.113 [INFO ] [hab.event.ThingStatusInfoChangedEvent] - Thing 'mqtt:broker:mosq' changed from OFFLINE (COMMUNICATION_ERROR): io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:1883 to OFFLINE
20:03:26.117 [INFO ] [o.transport.mqtt.MqttBrokerConnection] - Starting MQTT broker connection to 'localhost' with clientid openHAB3
20:03:26.132 [INFO ] [hab.event.ThingStatusInfoChangedEvent] - Thing 'mqtt:broker:mosq' changed from OFFLINE to OFFLINE (COMMUNICATION_ERROR): Timeout
20:03:26.146 [INFO ] [hab.event.ThingStatusInfoChangedEvent] - Thing 'mqtt:broker:mosq' changed from OFFLINE (COMMUNICATION_ERROR): Timeout to OFFLINE (COMMUNICATION_ERROR): io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:1883
20:03:36.132 [INFO ] [t.reconnect.PeriodicReconnectStrategy] - Try to restore connection to 'localhost'. Next attempt in 60000ms
20:03:36.140 [INFO ] [hab.event.ThingStatusInfoChangedEvent] - Thing 'mqtt:broker:mosq' changed from OFFLINE (COMMUNICATION_ERROR): io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:1883 to OFFLINE
20:03:36.145 [INFO ] [o.transport.mqtt.MqttBrokerConnection] - Starting MQTT broker connection to 'localhost' with clientid openHAB3
20:03:36.155 [INFO ] [hab.event.ThingStatusInfoChangedEvent] - Thing 'mqtt:broker:mosq' changed from OFFLINE to OFFLINE (COMMUNICATION_ERROR): io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:1883
20:04:36.151 [INFO ] [t.reconnect.PeriodicReconnectStrategy] - Try to restore connection to 'localhost'. Next attempt in 60000ms
20:04:36.157 [INFO ] [hab.event.ThingStatusInfoChangedEvent] - Thing 'mqtt:broker:mosq' changed from OFFLINE (COMMUNICATION_ERROR): io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:1883 to OFFLINE
20:04:36.161 [INFO ] [o.transport.mqtt.MqttBrokerConnection] - Starting MQTT broker connection to 'localhost' with clientid openHAB3
20:04:36.178 [INFO ] [hab.event.ThingStatusInfoChangedEvent] - Thing 'mqtt:broker:mosq' changed from OFFLINE to OFFLINE (COMMUNICATION_ERROR): io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:1883
.
.
.
etc.