how to share blockchain data on one linux machine btw different users

[brenzi]

Hi

Because of its size, I'd like to hold only one version of the blockchain on my machine (ubuntu). Two users should be able to use it.

What I did:
- move ~/.bitcoin/blocks to a folder accessible by all users
- symlink to new location
- change permissions to allow both users to rw(x)
- set default directory permissions using setfacl so newly crated files should get correct permissions

Unfortunately, bitcoin-qt complains whenever I change the user and permissions are messed up after each startup of bitcoin-qt

How should I do that?

kind regards
Alain