Further Observations on ZFS Metadata Special Device

Last quarter we discussed metadata special devices.

By default, adding a special device to a zpool causes all (new) pool metadata to be written to the device. Presumably this device is substantially faster than spinning disk vdevs in the pool. //

Finally, the permissions and ownerships regime is re-enforced every five minutes just in case something ever gets chowned/chmodded incorrectly. Yes, we really are gratuitously chmodding and chowning ourselves every five minutes.