Thank you infeo, for your careful write-up following my post. For the casual readers of this post i’ll answer my own questions:
- Is this the intended behavior?
Yes. Starting with release 1.6.9 newly created directories receive a backup dirid.c9r file. This fact only turned up after the 1.6.15 release, which contains an extended health check.
- I would expect that with the first Cryptomator release which saves the (new) dirid.c9r files, these would be generated for the whole vault.
The designers decided against it:
“Modifying vault structure without a migration is dangerous, additionally it would cause a lot of user concern when their cloud sync starts running even though they just browsed the vault content.”
Also note (again) that the missing dirid’s are a resilience feature. Nice to have, if not: no problem.