Dell Acceleration Appliances for Databases - Manual (Page 72)

Resolving Path Failures during Multipathing Scans
If a path fails while
multipathd
is scanning the path UID, then
multipathd
won't recognize that
path until it is rescanned explicitly. To verify whether
multipathd
failed to add one or more paths,
run the following command:
# echo show paths | multipathd -k | grep faulty
388:0:0:10 sdlt 68:432 1 undef faulty running orphan
388:0:0:11 sdlu 68:448 1 undef faulty running orphan
You can also force
multipathd
to reconsider faulty paths, as follows:
# echo reconfigure | multipathd -k
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