A fix is available
APAR status
Closed as program error.
Error description
Some old levels of FC adapter firmware had an issue where the adapter would erroneously return an error continuously. Normally, that would result in an I/O failure. However, there is one case where it could cause the PCM to indefinitely retry reading information from the LUN, causing an I/O hang instead of an I/O failure.
Local fix
Problem summary
Some old levels of FC adapter firmware had an issue where the adapter would erroneously return an error continuously. Normally, that would result in an I/O failure. However, there is one case where it could cause the PCM to indefinitely retry reading information from the LUN, causing an I/O hang instead of an I/O failure.
Problem conclusion
Modified the PCM to check for excessive retries when rereading the LUN access state information.
Temporary fix
Comments
6100-08 - use AIX APAR IV69994 6100-09 - use AIX APAR IV69792 7100-02 - use AIX APAR IV70248 7100-03 - use AIX APAR IV69803
APAR Information
APAR number
IV69803
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2015-02-23
Closed date
2015-02-23
Last modified date
2015-09-30
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
AIX V7.1
Fixed component ID
5765H4000
Applicable component levels
R710 PSY U865818
UP15/05/19 I 1000
PTF to Fileset Mapping
U865818 devices.common.IBM.mpio.rte 7.1.3.45
[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSMV87","label":"AIX 6.1 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSMVAX","label":"AIX Express Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11R","label":"AIX 7.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
30 September 2015