EMC PowerPath marks paths and SP as dead in RHEL
Issue
- Storage paths failed and applications or file systems on those devices reported I/O errors
- LUNs are missing and we tried to make LUNs enable all the ways we can but were unsuccessful
/var/log/messagesshows paths being marked as dead:
May 5 05:59:39 node1 kernel: Error:Mpx:Path Bus 1 Tgt 0 Lun 5 to APM00091103916 is dead.
May 5 05:59:39 node1 kernel: Error:Mpx:Path Bus 1 Tgt 0 Lun 0 to APM00091103916 is dead.
May 5 05:59:39 node1 kernel: Error:Mpx:Path Bus 1 Tgt 0 Lun 2 to APM00091103916 is dead.
May 5 05:59:39 node1 kernel: Error:Mpx:Path Bus 1 Tgt 0 Lun 4 to APM00091103916 is dead.
May 5 05:59:39 node1 kernel: Error:Mpx:Path Bus 1 Tgt 0 Lun 6 to APM00091103916 is dead.
May 5 05:59:39 node1 kernel: Error:Mpx:Path Bus 1 Tgt 0 Lun 3 to APM00091103916 is dead.
May 5 05:59:39 node1 kernel: Error:Mpx:Path Bus 1 Tgt 0 Lun 1 to APM00091103916 is dead.
May 5 05:59:39 node1 kernel: Error:Mpx:Bus 1 to Clariion APM00091103916 port SP A6 is dead.
powermtshows paths marked as dead
Pseudo name=emcpowere
CLARiiON ID=APM00091103916 [DLP09XWAP]
Logical device ID=60060160824020001C05C626FB43DE11 [LUN 990]
state=dead; policy=CLAROpt; priority=0; queued-IOs=0;
Owner: default=SP A, current=SP A Array failover mode: 1
==============================================================================
--------------- Host --------------- - Stor - -- I/O Path -- -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 qla2xxx sdc SP A5 active dead 0 1
0 qla2xxx sdj SP B5 active dead 0 1
1 qla2xxx sdq SP A6 active dead 0 1
1 qla2xxx sdx SP B6 active dead 0 1
Environment
- Red Hat Enterprise Linux (RHEL) 6
- Red Hat Enterprise Linux (RHEL) 5
- Red Hat Enterprise Linux (RHEL) 4
- EMC PowerPath
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