K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2017-04-14T17:03:32.403989Z
K 7
svn:log
V 287
Check for a provider error before enqueuing mirror I/O.

We are otherwise susceptible to a race with a concurrent teardown of the
mirror provider, causing the I/O to be left uncompleted after the mirror
started withering.

Tested by:	pho
MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon

END