Re: [PATCH v4 10/10] scsi: Implement blk_mq_ops.show_rq()

Martin K. Petersen
2017-04-24T23:19:50Z

Bart,

> SCSI tracing has to be enabled before a test is started, produces a
> huge amount of data, and deriving state information from a huge trace
> is far from easy. The information in debugfs provides an easy to read
> overview of the current state without having to analyze megabytes of
> traces, without introducing any slowdown and without having to enable
> any tracing mechanism from beforehand.

Fair enough. Just seems like there's an obvious overlap in plumbing.
Don't know if that can be leveraged instead of introducing something
completely new?

--
Martin K. Petersen Oracle Linux Engineering