Some paths are missing in multipath?
Issue
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Some sub paths are missing in multipath. I have tried to force lip the HBA card as well, and the storage team have confirmed that they can see no errors on their side.
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The hardware is IBM X3650. There are two HBAs configured each with 2 paths:
1a:00.0 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03) 1a:00.1 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03)
But multupath is not listing some of the paths randomly:
mpath1 (3600c0ff0001187d84537fe5101000000) dm-7 IBM,2145 [size=140G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=50][active] \_ 5:0:0:1 sdc 8:32 [active][ready] \_ round-robin 0 [prio=20][enabled] \_ 5:0:2:1 sdk 8:160 [active][ready] \_ 6:0:0:1 sds 65:32 [active][ready] mpath0 (3600c0ff0001187d84537fe5101000001) dm-6 IBM,2145 [size=80G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=100][active] \_ 5:0:2:0 sdj 8:144 [active][ready] \_ 6:0:0:0 sdr 65:16 [active][ready] \_ round-robin 0 [prio=20][enabled] \_ 5:0:0:0 sdb 8:16 [active][ready] \_ 6:0:2:0 sdz 65:144 [active][ready] mpath2 (3600c0ff0001187d84537fe5101000002) dm-13 IBM,2145 [size=125G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=50][enabled] \_ 5:0:3:3 sdq 65:0 [active][ready] \_ round-robin 0 [prio=20][enabled] \_ 5:0:1:3 sdi 8:128 [active][ready] \_ 6:0:1:3 sdy 65:128 [active][ready] mpath3 (3600c0ff0001187d84537fe5101000003) dm-12 IBM,2145 [size=50G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=100][enabled] \_ 5:0:1:2 sdh 8:112 [active][ready] \_ 6:0:1:2 sdx 65:112 [active][ready] \_ round-robin 0 [prio=10][enabled] \_ 5:0:3:2 sdp 8:240 [active][ready] mpath4 (3600c0ff0001187d84537fe5101000004) dm-11 IBM,2145 [size=80G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=100][enabled] \_ 5:0:1:1 sdg 8:96 [active][ready] \_ 6:0:1:1 sdw 65:96 [active][ready] \_ round-robin 0 [prio=10][enabled] \_ 5:0:3:1 sdo 8:224 [active][ready] mpath5 (3600c0ff0001187d84537fe5101000005) dm-10 IBM,2145 [size=50G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=100][active] \_ 5:0:1:0 sdf 8:80 [active][ready] \_ 6:0:1:0 sdv 65:80 [active][ready] \_ round-robin 0 [prio=10][enabled] \_ 5:0:3:0 sdn 8:208 [active][ready] mpath6 (3600c0ff0001187d84537fe5101000006) dm-8 IBM,2145 [size=601G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=50][active] \_ 5:0:0:2 sdd 8:48 [active][ready] \_ round-robin 0 [prio=20][enabled] \_ 5:0:2:2 sdl 8:176 [active][ready] \_ 6:0:0:2 sdt 65:48 [active][ready] mpath7 (3600c0ff0001187d84537fe5101000007) dm-9 IBM,2145 [size=75G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=100][enabled] \_ 5:0:2:3 sdm 8:192 [active][ready] \_ 6:0:0:3 sdu 65:64 [active][ready] \_ round-robin 0 [prio=10][enabled] \_ 5:0:0:3 sde 8:64 [active][ready]
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Environment
- Red Hat Enterprise Linux(RHEL) 5.5
- Device Mapper Multipath(DM Multipath)
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