We ran daily compactifications on Beryl-Aquamarine for years without issue, so long as we always had enough disk space.
Expect things to go really wonky if you run out of disk space during compacting. But we never had hangs during compacting, things seemed to work fine.
We had an unusual issue last night (thanks to @luca.mascetti for working through it with us) where under Citrine, a slave didn’t load the new files correctly into memory, and bugged out. For write access to resume to the master MGM, we needed to shut down the slave MGM.
Citrine appears to do compacting quite differently, and we identified some differences last night we’ll have to submit a ticket for clarity on.