install to-filesystem doesn't work when target /var is a separate mount

[stephan-tolksdorf]

install to-filesystem fails with if the target filesystem includes an empty /var directory.

ERROR Installing to filesystem: Verifying empty rootfs: Non-empty root filesystem; found "var"

With --replace=wipe the installation fails when the empty /var is an active mount point with

ERROR Installing to filesystem: Device or resource busy (os error 16)

[cgwalters]

What's your higher level goal? Do you want the /var directory to be the same /var in the installed target (on the same physical filesystem) or are you trying to make /var be a separate mount point/partition?

With --replace=wipe the installation fails when the empty /var is an active mount point with

Based on this it sounds like the latter, you want the /var to be a mount point in the target?

We should definitely change --wipe to not attempt to cross mount points for safety though, as I think that's never desired.

[cgwalters]

We should definitely change --wipe to not attempt to cross mount points for safety though, as I think that's never desired.

➡ #1001

[stephan-tolksdorf]

Thanks!

/var is a mount point in the target.

[cgwalters]

OK, we should definitely support that...there's a few related issues but I think not a dedicated one. Will do some triage and if I can't find/repurpose one will make a new one.