sudo mount -o remount,size=30G /run

Why 30G though? Isn't it enough to be of the size of shared_memory.bin? In that case setting both the size of shm and ram-disk to 22G should still have decent margin (4-5G).

downloading it could take a significant amount of time (6-12 hours even with a decent network connection)

12 hours is only a bit less than syncing from scratch through p2p, so downloading in that case is not a viable solution 😁

/home/hive/datadir/blockchain/block_log and /home/hive/datadir/blockchain/block_log.artifacts will be created

So, I guess the version supporting split block log is the next one, right?