I see in the identity folder the next file: revocations.db
Is this linked to first node ? (storagenode)
Will storagenode2 try to create this (revocations.db) file again and rewrite the first one?
Just to say that there is some advice to keep a copy of the identity with the storagenode data that belongs to it. This is so if you lose /root you still have your identity with the data disk.
I would like to suggest you to move data inside subfolder on the mounted drive - in case if mount fail the node will not start and would not be disqualified for lost data.