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
