Again, yes, you may rear end someone, but this is not the correct analogy here. In this situation, the car rear ends someone while you are fully breaking because you didn't pay for the automatic breaking upgrade. This is a fail.
125 karma · joined July 12, 2017
I understand somebody wanting to type "docker run xxx" and have everything setup automatically, but if you're running anything but default networking and actually care where the xxx image comes from, it's gonna fail miserably. Coming from the VM world, I found it much easier to work with macvlan interfaces that lxd supports for example - the container gets it's own interface and IP address and all networking can be prepared and set up on the host instead of some daemon thinking it knows my firewall better than me...
I even run it in some KVM environments for intra-VM routing and firewall because it's lightweight.
Basically, ashift=12 increases ZFS block size to 4K. Metadata use full blocks that would be 512b on ashift=9 but are now 4K (due to ashift=12). It wastes at least 3.5Kb more than normal 512 byte blocks for each block that is not filled entirely.
According to some bug reports, nobody has touched this since 2011...