Author: mm
Date: Mon Aug 9 06:36:11 2010
New Revision: 211091
URL: http://svn.freebsd.org/changeset/base/211091
Log:
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
Modified:
head/sys/boot/zfs/zfsimpl.c
Modified: head/sys/boot/zfs/zfsimpl.c
==============================================================================
--- head/sys/boot/zfs/zfsimpl.c Mon Aug 9 06:02:23 2010 (r211090)
+++ head/sys/boot/zfs/zfsimpl.c Mon Aug 9 06:36:11 2010 (r211091)
@@ -328,6 +328,9 @@ vdev_read_phys(vdev_t *vdev, const blkpt
size_t psize;
int rc;
+ if (!vdev->v_phys_read)
+ return (EIO);
+
if (bp) {
psize = BP_GET_PSIZE(bp);
} else {
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