Can someone please comment on this behavior ? Please let me know if the question is not clear and I need to rephrase it in different words. Thanks! -- Regards, Amit Arora > Hello, > > A little bit of background first... > > If we have blacklisted devices in /etc/multipath.conf, "multipath -l" > output looks like this (please note "#"s below) : > # multipath -l > mpath2 () dm-4 , > [size=15G][features=0][hwhandler=0] > \_ round-robin 0 [prio=0][active] > \_ #:#:#:# - #:# [active][undef] > \_ #:#:#:# - #:# [active][undef] > mpath1 () dm-1 , > [size=15G][features=0][hwhandler=0] > \_ round-robin 0 [prio=0][active] > \_ #:#:#:# - #:# [active][undef] > \_ #:#:#:# - #:# [active][undef] > mpath3 () dm-7 , > [size=15G][features=0][hwhandler=0] > \_ round-robin 0 [prio=0][active] > \_ #:#:#:# - #:# [active][undef] > \_ #:#:#:# - #:# [active][undef] > > > And, for these blacklisted devices, "multipath -ll" gives full output > (i.e. no "#"s in the result) : > # multipath -ll > mpath2 () dm-4 IBM,1724-100 FAStT > [size=15G][features=0][hwhandler=0] > \_ round-robin 0 [prio=2][active] > \_ 1:0:0:2 sdd 8:48 [active][ready] > \_ 1:0:1:2 sdh 8:112 [active][ready] > mpath1 () dm-1 IBM,1724-100 FAStT > [size=15G][features=0][hwhandler=0] > \_ round-robin 0 [prio=2][active] > \_ 1:0:0:1 sdc 8:32 [active][ready] > \_ 1:0:1:1 sdg 8:96 [active][ready] > mpath3 () dm-7 IBM,1724-100 FAStT > [size=15G][features=0][hwhandler=0] > \_ round-robin 0 [prio=2][active] > \_ 1:0:0:3 sde 8:64 [active][ready] > \_ 1:0:1:3 sdi 8:128 [active][ready] > > >From the source code we can see that in both cases (-l and -ll), > path_discovery() and get_dm_mpvec() get called. The only difference is > that -ll will result in a call to update_paths() in get_dm_mpvec(), > after multipath maps have been disassembled/discovered. > > The question is that, is this behavior intended, a bug or a "feature" as > a result of the design of the tool ? And, does it make sense to keep the > behavior identical for -l and -ll options (of multipath tool) incase of > blacklisted devices ? > > Thanks! > -- > Regards, > Amit Arora -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
