mm fe97da49a3 Return EIO if vdev->v_phys_read is NULL.
This fixes booting from a ZFS mirror with a unavailable primary device.

PR:		kern/148655
Reviewed by:	avg
Approved by:	delphij (mentor)
MFC after:	3 days
2010-08-09 06:36:11 +00:00
..
2010-08-07 10:23:54 +00:00
2010-08-06 23:11:19 +00:00
2010-07-23 11:00:46 +00:00
2010-08-02 22:26:08 +00:00
2010-08-08 14:37:16 +00:00