423a5e0cc3## Problem - If you want to install additional packages or you want to copy a manually built Rust binary then you might have trouble with not enough free disk space in the Live ISO - This test shows that the available space in the default image is about 0.5GB: ``` # df -h / Filesystem Size Used Avail Use% Mounted on /dev/mapper/live-rw 2.4G 1.8G 398M 83% / # dd bs=1M if=/dev/zero of=/take_space dd: error writing '/take_space': No space left on device 522+0 records in 521+0 records out 546709504 bytes (547 MB, 521 MiB) copied, 0.750277 s, 729 MB/s ``` ## Solution - Unfortunately it seems Kiwi does not support manually changing the default value - As a workaround create a huge sparse file which in reality takes tiny fraction of it's size - Kiwi evaluates the apparent (virtual) file sizes when computing the size of the image so it makes the image bigger - During testing I found out that after deleting the sparse file you can actually get even some more free space - So I created a new systemd service which deletes the created file at boot ## Testing - The build ISO image has a similar size as before, the sparse file does not increase the ISO size - Tested manually, with the fix there is about 3.4GB free space now: ``` # df -h / Filesystem Size Used Avail Use% Mounted on /dev/mapper/live-rw 5.3G 1.9G 3.2G 37% / # dd bs=1M if=/dev/zero of=/take_space dd: error writing '/take_space': No space left on device 3522+0 records in 3521+0 records out 3692621824 bytes (3.7 GB, 3.4 GiB) copied, 3.87284 s, 953 MB/s ``` ## Notes - The writes to the system are kept in RAM, that means to fully use the new 3.4GB disk space the machine needs more than 4GB RAM!
9 lines
167 B
Desktop File
9 lines
167 B
Desktop File
[Unit]
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Description=Delete a temporary file to have more disk space
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[Service]
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ExecStart=rm -f /var/lib/live_free_space
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Type=oneshot
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[Install]
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WantedBy=default.target
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