A fix is available
APAR status
Closed as program error.
Error description
When backbyname encounter read errors on files while it already started backing up the file. It doesn't exit, it continue to loop in read for the supposed remaining bytes thus continue to output the same error, for the same file for each input blocs it try to read that fail. The resulting backup will contain the begining of the input file followed by zeros up to the end of the file size that was computed before the file went in error. This can occurs for example when backing up from an nfs filesystem, and a file is removed from the nfs server. In that case backbyname will output the following errors in loop : backup: 0511-076 Cannot read the specified file. ./bigfile: A file, file system or message queue is no longer available. backup: 0511-076 Cannot read the specified file. ./bigfile: A file, file system or message queue is no longer available. etc...
Local fix
Problem summary
When backbyname encounters read errors on file while it already started backing up, it continues to loop in read for the supposed remaining bytes thus continue to output the same error, for the same file for each input blocks it try to read that fails. This results in too many error messages making it difficult to analyze and determine what went wrong.
Problem conclusion
backbyname will now print only one error message per file for the read errors if any encountered during the backup of that file.
Temporary fix
Comments
6100-07 - use AIX APAR IV54181 6100-08 - use AIX APAR IV58652 6100-09 - use AIX APAR IV58485 6100-09 - use AIX APAR IV58485 6100-09 - use AIX APAR IV58485 7100-01 - use AIX APAR IV58607 7100-02 - use AIX APAR IV58581 7100-03 - use AIX APAR IV58454 7100-04 - use AIX APAR IV58541
APAR Information
APAR number
IV58607
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2014-04-02
Closed date
2014-04-02
Last modified date
2016-05-10
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 U860781
UP14/08/12 I 1000
PTF to Fileset Mapping
U860781 bos.rte.archive 7.1.1.22
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Document Information
Modified date:
10 May 2016