A fix is available
APAR status
Closed as program error.
Error description
In a clustered lvm environment, when one node is running 7100-03-04, and other node(s) are at prior levels... Running mklv on one of the nodes at a prior level will cause the 7100-03-04 system to crash with this stack: KDB(0)> f pvthread+014100 STACK: Ý05C6E56C¨hd_nearby+00032C (0000000000006C75, F1000A01C0AF0E88, 0000000000000000, 00000000000363A8, 0000000000006C75 Ý??¨) Ý05C6828C¨hd_parallel_read+00020C (??, ??, ??) ... . This is because the 7100-03-04 node mis-interprets a structure passed to it from the node at a prior level, which very likely leads to a crash when I/O occurs at a later stage in the mklv process.
Local fix
To avoid crash make sure nodes in cluster are at the same aix release level.
Problem summary
**************************************************************** * USERS AFFECTED: * Systems running the 7100-03 Technology Level with * bos.clvm.enh at 7.1.3.30 **************************************************************** * PROBLEM DESCRIPTION: * In a clustered lvm environment, when one node is * running 7100-03-04, and other node(s) are at prior * levels... * Running mklv on one of the nodes at a prior level * will cause the 7100-03-04 system to crash with * this stack: * KDB(0)> f * pvthread+014100 STACK: * 05C6E56C hd_nearby+00032C (0000000000006C75, F1000A01C0AF0E88 ,* 0000000000000000, 00000000000363A8, 0000000000006C75 ?? ) * 05C6828C hd_parallel_read+00020C (??, ??, ??) * ... * . * This is because the 7100-03-04 node mis-interprets a structure * passed to it from the node at a prior level, which very likely * leads to a crash when I/O occurs at a later stage in the mklv * process. **************************************************************** * RECOMMENDATION: * Install APAR IV71769. ****************************************************************
Problem conclusion
Correct the data structure used to pass information between nodes so crash cannot occur even in a mixed level environment.
Temporary fix
Comments
APAR Information
APAR number
IV71769
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
YesPE
HIPER
NoHIPER
Submitted date
2015-04-01
Closed date
2015-04-02
Last modified date
2016-05-11
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 U865733
UP15/05/19 I 1000
PTF to Fileset Mapping
U865733 bos.clvm.enh 7.1.3.45
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Document Information
Modified date:
11 May 2016