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Status Not under consideration
Workspace IBM Z and LinuxONE Systems Hardware
Categories HMC/Support Element (SE)
Created by Guest
Created on Dec 4, 2017

RELATED IDEAS

Create 'Blue' hardware error based on channel error threshold being exceeded

We recently has a 'storm' of IFCC errors on a FICON channel over a number of days that ended up causing an outage on a pair of VM SSI LPARs . After the fact, we saw that we'd received hundreds of "Purge Path Extended Data" errors on the channel, but there was never an indication from the processor view that there was an error. Ideally, we'd have seen a blue hardware error days in advance to notify us of an error in the channel path.

Idea priority Medium
  • Guest
    Reply
    |     Jul 13, 2018

    We reviewed the request to create hardware messages from IFCC errors and have concluded that this is not a viable option for the following reasons:
    IFCC errors are typically related to network problems, but not hardware failures.
    Nearly all client systems generate many IFCCs and hit IFCC thresholds frequently. If we created hardware errors in all these cases then most systems would be creating hardware messages repeatedly for non-hardware errors.
    It is our belief that most clients would not expect or want this behavior.
    Repeated hardware messages for IFCCs we could potentially mask real hardware errors by flooding the hardware messages.
    There are already several notifications for IFCCs and tasks to investigate them.
    Some of the tasks to analyze IFCCs include:
    The "IFCC and other errors task"
    Perform Problem Analysis
    Fiber Channel Analyzer
    Notifications include:
    The background color will change if the acceptable status flag is set for CHPIDs (the default behavior looks for IFCC errors).
    The Operating System shows channel errors.
    Operating system messages are also generated.

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