LogicalVolumes on mdraid devices backed by device-mapper-multipath LUNs are unresponsive

Solution Verified - Updated -

Issue

  • after the reboot not all MD-devices recovered correctly, the MD-devices consist out of device-mapper-multipath devices
  • reading from the filesystem on the LogicalVolumes on the MD-devices hangs indefinitely, processes go into D-state

Environment

  • Red Hat Enterprise Linux 5.3
  • SAN connected over device-mapper-multipath
    • RAID1 mdraid on two device-mapper-multipath devices
      • LVM with filesytems on the mdraid devices
  • LifeKeeper High availability clustering

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