Issue

Multipath device marked as Read-Only

 mpath10 (360060480000190101654533031423245) dm-11 EMC,SYMMETRIX
  [size=2.0G][features=0][hwhandler=0][ro]
  \_ round-robin 0 [prio=2][active]
   \_ 4:0:0:93 sdac 65:192 [active][ready]
   \_ 3:0:0:93 sdo  8:224  [active][ready]

Following errors are seen in logs

multipathd: dm-23: add map (uevent)
multipathd: dm-23: devmap already registered
multipathd: 8:176: mark as failed
multipathd: mpath13: remaining active paths: 1

multipathd: dm-23: add map (uevent)
multipathd: dm-23: devmap already registered
multipathd: 65:144: mark as failed
multipathd: mpath13: remaining active paths: 0