MSA2040FC - IO traffic only on controller A

[JerryKor]

Hello,

I have strange problem with MSA2040FC on customer site. To this array are connected directly two linux hosts. Array has two storage pools, on each pool is configured one volume.  Multipathing is configured correctly, on both volume I can see IO on volume statistics but I see IO traffic only on A1 and A2 ports, not B1 and B2.

Pool configuration below. Volume configuration, IO statistics and multipath in attchement files.

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Name  Size     Free   Own Pref RAID   Class    Disks Spr Chk  Status Jobs  Job% Serial Number                    Spin Down SD Delay Sec Fmt   Health     Reason Action
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dg01  5995.1GB 25.1MB A   A    RAID10 Linear   12    0   512k FTOL              00c0ff265c150000a5fd665600000000 Disabled  0        512n      OK                      
dg02  4995.9GB 37.7MB B   B    RAID10 Linear   10    0   512k FTOL   VRSC  63%  00c0ff266b6900009efe665600000000 Disabled  0        512n      OK                      
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Do you have any idea why I dont observe IO on B-ports?