Comment 9 for bug 927540

That devnode line is actually part of the default in memory config,
see libmultipath/blacklist.c#setup_default_blist. So try dropping
that.

Just try and keep you multpath.conf as simple as possible,
to even *one* directive, test and record, then iterate until you start to see it
break. It's best to stop multipath-tools altogether and just "multipath -F &&
multipath -v4" until you find the breakage. Record the logs the entire time
using redirection or 'script' and attach your results to this issue. Thank you.