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Status Not under consideration
Workspace AIX
Created by Guest
Created on Oct 29, 2015

LVM watchdog

PMR 70988,7TD presents an instance where the LPAR failed due to an LV hang affecting rootvg. The current analysis is that the failure event began with SAS adapter exceptions that were not properly handled, possibly due to APAR IV69522, and so some in-flight I/Os were never acknowledged back to the LVM layer.

An argument can be made that the LVM should have had its own watchdog timing capability to recognize that I/O had not completed, so that the affected submirrors could have been marked failed to maintain system stability. The LVM should have been able to reasonably survive and work around the hardware (and/or software) failure seen in adapter (and/or driver). This is a request for an LVM watchdog facility.

Idea priority Medium
  • Guest
    Aug 26, 2019

    IBM has evaluated the priority of this enhancement proposal relative to other future product content and determined that this RFE will not be pursued for a future product release.

  • Guest
    Oct 30, 2015

    Creating a new RFE based on Community RFE #79067 in product IBM AIX.