Using RHEL 6.6 on Powerpc architecture, Multipath failing to time out bad paths in a timely manner.

Solution Verified - Updated -

Issue

  • Multipath failing to time out bad paths in a timely manner.
    ---Steps to Reproduce---
    RHEL 6.8 lpar with two vfc adapters mapped to SAN Storage and configured in mulitpath.
    In vios do: vfcmap -vadapter vfchost0 -fcp (where vfchost0 maps to test lpar).
    multipath -ll and lvm commands hang in linux lpar.
    tail /var/log/message hangs sometimes. multipath doesn't see failing devices and doesn't mark paths down.

Environment

  • Red Hat Enterprise Linux 6

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