K 10
svn:author
V 7
asomers
K 8
svn:date
V 27
2016-05-27T22:32:44.867463Z
K 7
svn:log
V 887
Avoid issuing spa config updates for physical path when not necessary

ZFS's configuration needs to be updated whenever the physical path for a
device changes, but not when a new device is introduced. This is because new
devices necessarily cause config updates, but only if they are actually
accepted into the pool.

sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_geom.c
	Split vdev_geom_set_physpath out of vdev_geom_attrchanged.  When
	setting the vdev's physical path, only request a config update if
	the physical path has changed.  Don't request it when opening a
	device for the first time, because the config sync will happen
	anyway upstack.

sys/geom/geom_dev.c
	Split g_dev_set_physpath and g_dev_set_media out of
	g_dev_attrchanged

Submitted by:	will, asomers
MFC after:	4 weeks
Sponsored by:	Spectra Logic Corp
Differential Revision:	https://reviews.freebsd.org/D6428

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