I have a pi or two running openwrt, which does this naturally. I also have a pi running pikvm. You change the filesystem by doing: # rw <-- makes filesys

I have a pi or two running openwrt, which does this naturally. I also have a pi running pikvm. You change the filesystem by doing: # rw <-- makes filesystem read/write # (change config, or commands making filesystem changes) # ro <-- back to read-only