K 10
svn:author
V 6
mjacob
K 8
svn:date
V 27
2010-04-23T16:49:18.516449Z
K 7
svn:log
V 856
This is an MFC of 205847, 204071 and 196580

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Change how multipath labels are created and managed. This makes it easier
to support various storage boxes which really aren't active-active.

We only write the label on the *first* provider. For all other providers
we just "add" the disk. This also allows for an "add" verb.

A usage implication is that you should specificy the currently active
storage path as the first provider.

Note that this does not add RDAC-like functionality, but better allows for
autovolumefailover configurations (additional checkins elsewhere will support
this).

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- Style fixes.
- Prefer strlcpy() over strncpy().

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There's no need for checking result of M_WAITOK allocation.

END