Quote Originally Posted by [email protected]
I was overly optimistic - UNIONFS let me add the hard drive, but still acted like it was out of space when the ram part filled up. I'm guessing that it needs to be added earlier in the process, or better yet, instead of the ramdisk. Sounds like major surgery to me.
You can use
Code:
sudo unionctl /UNIONFS --mode /ramdisk ro
to make ramdisk-branch readonly. After that no additional data will be written to it. You should of course add another read-write branch before doing this.