Persist mount from initramfs with systemd.volatile boot

[serenissi <serenissi@xxxxxxxxxxxxx>]

I have an use case that requires persisting a mount (/sysroot/mnt) from 
initramfs. The system is booted with systemd.volatile, so only /usr of 
/sysroot is used, rest is tmpfs.

Ideally I should add the mount unit in the /usr itself but /usr is a 
read only signed fs that I can't modify for reasons. I can arbitrarily 
change initramfs though. As it is an ephemerous system, there isn't any 
other place.


Is it somehow possible? I couldn't think of a way surviving the 
pivot_root for volatile.


serene

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