In order to assist tuning ZFS, add the tunable vfs.zfs.vdev.cache.bshift, base r2 logarithm of the size used to read disks, simlar to the Solaris /etc/system tunable. How-To-Repeat: N/A
Responsible Changed From-To: freebsd-bugs->freebsd-fs Over to maintainer(s).
State Changed From-To: open->closed - A patch similar to this is already in HEAD, and will probably be MFCed in the case of a ZFS MFC.