This how to helps you to learn fixing the No Space Left On Device On OpenHAB issue during updating OpenHAB. Fixing is working with OpenHAB 3 and it also should work with OpenHAB 4 and any other Linux based system.
No Space Left On Device On OpenHAB
Index Of How To ….
- Background for No Space Left On Device On OpenHAB
- How To Fix No Space Left On Device On OpenHAB
- Additional Information
Background for No Space Left On Device On OpenHAB
In one of the recent updates that I made to my system I noticed an endless amount of messages that said “No space left on device”. It actually looked like the above. Fixing this issue is fortunately very easy. This how to explains how you can fix this leveraging on the example that I faced.
In case of OpenHAB 3 you are likely to also see the below error message. In OpenHAB 4 and any other Linux system you might see error messages too.
There was an error or interruption during the execution of Upgrade System
How to fix No Space Left On Device On OpenHAB
In my case, the system complains that it has not enough space to write into the /var/log/dkpg.log. This logs like the below.
Setting up openhab-addons (3.4.4-2) ... dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device Setting up php-symfony-filesystem (4.4.19+dfsg-2+deb11u3) ... dpkg: cannot write to log file '/var/log/dpkg.log': No space left on device
I would guess, that there is indeed an issue with the disk. Therefore, let’s check it. I check it by executing:
openhabian@OpenHAB:~ $ df -h
The system tells me the following:
openhabian@OpenHAB:~ $ df -h Filesystem Size Used Avail Use% Mounted on /dev/root 469G 36G 409G 9% / devtmpfs 3.9G 0 3.9G 0% /dev tmpfs 3.9G 0 3.9G 0% /dev/shm tmpfs 1.6G 156M 1.4G 10% /run tmpfs 5.0M 0 5.0M 0% /run/lock /dev/sda1 253M 52M 201M 21% /boot /dev/zram1 721M 230M 440M 35% /opt/zram/zram1 overlay1 721M 230M 440M 35% /var/lib/openhab/persistence /dev/zram2 974M 951M 0 100% /opt/zram/zram2 overlay2 974M 951M 0 100% /var/log tmpfs 787M 0 787M 0% /run/user/1000
Now, looking into these numbers in more details and considering that I have not enough disk space for /var/log/dkpg.log, it gets in the above quite visible that /var/log is 100% used. This is, why the system complains.
Now… The overlay2 and /dev/zram2 both related to the zram service.
I therefore decided to restart this service (on OpenHAB 3) with the below command:
openhabian@OpenHAB:~ $ sudo systemctl stop zram-config.service
Following this I checked the status on my hard drive and (of course) it was resolved:
openhabian@OpenHAB:~ $ df -h Filesystem Size Used Avail Use% Mounted on /dev/root 469G 37G 408G 9% / devtmpfs 3.9G 0 3.9G 0% /dev tmpfs 3.9G 0 3.9G 0% /dev/shm tmpfs 1.6G 156M 1.4G 10% /run tmpfs 5.0M 0 5.0M 0% /run/lock /dev/sda1 253M 52M 201M 21% /boot tmpfs 787M 0 787M 0% /run/user/1000
After this, I started Zram again by the below command:
openhabian@OpenHAB:~ $ sudo systemctl start zram-config.service
Shutting again the df -h command shows the new reality, which indicates: Issue Fixed!
openhabian@OpenHAB:~ $ df -h Filesystem Size Used Avail Use% Mounted on /dev/root 469G 37G 408G 9% / devtmpfs 3.9G 0 3.9G 0% /dev tmpfs 3.9G 0 3.9G 0% /dev/shm tmpfs 1.6G 156M 1.4G 10% /run tmpfs 5.0M 0 5.0M 0% /run/lock /dev/sda1 253M 52M 201M 21% /boot tmpfs 787M 0 787M 0% /run/user/1000 /dev/zram1 721M 36K 669M 1% /opt/zram/zram1 overlay1 721M 36K 669M 1% /var/lib/openhab/persistence /dev/zram3 974M 36K 907M 1% /opt/zram/zram3 overlay3 974M 36K 907M 1% /var/log
That’s it!
Additional Information
To learn more about zram and OpenHAB, checkout these websites:
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