On every open da(4) driver read all mode pages to use only one bit. It was done so to not depend on the list of pages supported by the disk. But I've found that at least for SATL of LSI/Broadcom HBAs with WD HDDs Power Condition mode page reading may take significant amount of time, much more than any other mode page, that visibly increased disk retaste time by GEOM.
With the change simultaneous retaste of 39 SATA disks takes about 2.5s instead of more than 4s before, and I no longer see "dareprobe" status on GEOM event thread.
On every open da(4) driver read all mode pages to use only one bit. It was done so to not depend on the list of pages supported by the disk. But I've found that at least for SATL of LSI/Broadcom HBAs with WD HDDs Power Condition mode page reading may take significant amount of time, much more than any other mode page, that visibly increased disk retaste time by GEOM.