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[dm-devel] multipath user tools help



hi everyone
 
i have some primary doughts on multipath, i installed every thing like user tools and kernel module.
 
but in my case disk subsystem in other country, they told  2 paths for disk subsystem.
 
but if i use multipath user command like multipath -l itis showing only one path and if i say multipath -v 1( it has to print devmap names), but is is giving error like error adding target table.
 
can any one know the details please help me.
 
 
multipath -v 1
device-mapper: dm-multipath: error getting device
device-mapper: error adding target to table
device-mapper: dm-multipath: error getting device
device-mapper: error adding target to table
device-mapper: dm-multipath: error getting device
device-mapper: error adding target to table
_______________________________________________
 multipath -l
SUNISYS__018404ST318404L3BT1AVVX000021460S66
[size=17 GB][features="0"][hwhandler="0"]
\_ round-robin 0 [active]
 \_ 0:0:1:0 sdb 8:16 [active][ready]

SSEAGATE_ST318305LC_____3JKP1HJQ000022144RSP
[size=16 GB][features="0"][hwhandler="0"]
\_ round-robin 0 [active]
 \_ 1:0:2:0 sde 8:64 [active][ready]

_________________________________________

 


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