5 ms·
No way to tell if it's changed if you don't store a hash as metadata. Something like ZFS where hashing is baked into the cost of the FS operation could optimis
by XorNot 5y ago
No way to tell if it's changed if you don't store a hash as metadata.
Something like ZFS where hashing is baked into the cost of the FS operation could optimise this.
- londons_explore 5y agoBut if you control the kernel and all the code that runs in the kernel, you know exactly who has written to disk and when. So if nobody wrote that data, then it hasn't changed.