multipathd shows path status as orphan, faulty

Solution Verified - Updated -

Issue

  • System is able to detect the SAN devices successfully in /proc/scsi/scsi output but for some paths multipathd is showing path status as orphaned, faulty:
multipathd> show paths
hcil    dev dev_t  pri dm_st   chk_st   next_check
[...]
1:0:0:0 sdm 8:192  0   [active][faulty] [orphan]
1:0:0:1 sdn 8:208  10  [active][ready]  XXX....... 6/20
1:0:0:2 sdo 8:224  0   [undef] [faulty] [orphan]
1:0:0:3 sdp 8:240  0   [undef] [faulty] [orphan]
1:0:0:4 sdq 65:0   0   [undef] [faulty] [orphan]
1:0:0:5 sdr 65:16  0   [undef] [faulty] [orphan]
1:0:1:0 sds 65:32  0   [undef] [faulty] [orphan]
1:0:1:1 sdt 65:48  0   [undef] [faulty] [orphan]
1:0:1:2 sdu 65:64  0   [undef] [faulty] [orphan]
1:0:1:3 sdv 65:80  0   [undef] [faulty] [orphan]
1:0:1:4 sdw 65:96  0   [undef] [faulty] [orphan]
1:0:1:5 sdx 65:112 0   [undef] [faulty] [orphan]

Environment

  • Red Hat Enterprise Linux 5.6
  • DM-Multipath.
  • IBM 2145 SAN devices.

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