K 10
svn:author
V 3
smh
K 8
svn:date
V 27
2014-12-25T02:17:17.499895Z
K 7
svn:log
V 285
Prevent zpool upgrade failing due to unavailable pools

Prior to this fix "zpool upgrade" and "zpool upgrade -a" would fail due to
an assert when operating on unavailable pools.

We now print a warning to stderr but allow the processing of other pools
to procesed.

MFC after:	1 month

END