K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2019-11-22T21:31:59.326643Z
K 7
svn:log
V 492
Do not retry long ready waits if previous gave nothing.

I have some disks reporting "Logical unit is in process of becoming ready"
for about half an hour before finally reporting failure.  During that time
CAM waits for the readiness during ~2 minutes for each request, that makes
system boot take very long time.

This change reduces wait times for the following requests to ~1 second if
previously long wait for that device has timed out.

MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.

END