Troubleshooting
Problem
nzhealcheck showed that one multipath port is down.
Symptom
Host reports:
Summary: [MAN] Log /var/log/messages multipathd: sdi: readsector0
checker reports path is down
Cause
Port path are down.
Diagnosing The Problem
To diagnose the issue please run the multipath
[root@lrdna74542v01a ~]# multipath -l
mpath2 (360060480000190105524533030453642) dm-1 EMC,SYMMETRIX
[size=280G][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=0][active]
\_ 5:0:0:364 sdc 8:32 [active][undef]
\_ 6:0:0:364 sdn 8:208 [active][undef]
mpath1 (360060480000190105524533030303632) dm-0 EMC,SYMMETRIX
[size=5.6M][features=0][hwhandler=0][ro]
\_ round-robin 0 [prio=0][active]
\_ 5:0:0:0 sdb 8:16 [active][undef]
\_ 6:0:0:0 sdm 8:192 [active][undef]
mpath9 (360000970000192603015533039453930) dm-8 EMC,SYMMETRIX
[size=2.0T][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=0][active]
\_ 5:0:1:2 sdj 8:144 [active][undef]
\_ 6:0:1:2 sdu 65:64 [active][undef]
mpath8 (360000970000192603015533039453830) dm-7 EMC,SYMMETRIX
[size=2.0T][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=0][active]
\_ 5:0:1:1 sdi 8:128 [failed][faulty]
\_ 6:0:1:1 sdt 65:48 [active][undef]
mpath7 (360060480000190105524533030453735) dm-6 EMC,SYMMETRIX
[root@lrdna74542v01a ~]# multipath -ll
mpath2 (360060480000190105524533030453642) dm-1 EMC,SYMMETRIX
[size=280G][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=2][active]
\_ 5:0:0:364 sdc 8:32 [active][ready]
\_ 6:0:0:364 sdn 8:208 [active][ready]
mpath1 (360060480000190105524533030303632) dm-0 EMC,SYMMETRIX
[size=5.6M][features=0][hwhandler=0][ro]
\_ round-robin 0 [prio=2][active]
\_ 5:0:0:0 sdb 8:16 [active][ready]
\_ 6:0:0:0 sdm 8:192 [active][ready]
mpath9 (360000970000192603015533039453930) dm-8 EMC,SYMMETRIX
[size=2.0T][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=2][active]
\_ 5:0:1:2 sdj 8:144 [active][ready]
\_ 6:0:1:2 sdu 65:64 [active][ready]
mpath8 (360000970000192603015533039453830) dm-7 EMC,SYMMETRIX
[size=2.0T][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=1][active]
\_ 5:0:1:1 sdi 8:128 [failed][faulty]
\_ 6:0:1:1 sdt 65:48 [active][ready]
Resolving The Problem
This is an issue with the SAN card
[{"Product":{"code":"SSULQD","label":"IBM PureData System"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":null,"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"1.0.0","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
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Document Information
Modified date:
17 October 2019
UID
swg21669931