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[Bug 1588421] Re: linux: 4.6 kernel fails to boot on ppc64el multi-path system


Or maybe not as 4.6 seems to fix that race. Though I found one change in
the ALUA handler post 4.6 which modifies the handling of missing VPD
identification (which leads to the "No device descriptors found"

commit fe8b9534a0a0356f8a76467e2c561194bdb53c84
Author: Hannes Reinecke <hare@xxxxxxx>
Date:   Fri May 6 10:34:35 2016 +0200

    scsi_dh_alua: do not fail for unknown VPD identification
    Not every device will return a useable VPD identification, but still
    might support ALUA. Rather than disable ALUA support we should be
    allowing the device identification to be empty and attach individual
    ALUA device handler to each devices.

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  linux: 4.6 kernel fails to boot on ppc64el multi-path system

Status in linux package in Ubuntu:

Bug description:

  Provisioned modoc (ppc64el) with stock Xenial, then installed the
  above kernel. It eventually times out attempting to mount rootfs and
  drops to the busybox prompt.

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