cam::periph:error, cam::{,a,n,sd}da:error
Trace the error evolution for I/O errors the periph encounters
cam::periph:recovery, cam::{,a,n,sd}da:recovery
Trace the result of the error sorting
cam::periph:invalidate
Trace device invalidations
cam::periph:hold-boot
cam::periph:release-boot
cam::xpt:hold-boot
cam::xpt:release-boot
Trace boot holds and releases at different levels
cam::xpt:bus-register
Trace new busses added
These additions allow fairly complete instrumentation of the discovery
process at boot through dtrace's anonymous tracing. It would be mildly
better to have the boot holds have the periph, but dtrace sbts have to
be static at compile time.
Sponsored by: Netflix