IT25141: BACKUP HANGS WHEN NFSTIMEOUT CLIENT OPTION IS GREATER THAN ZERO AND DATA DESCRIPTOR IS LARGER THAN 1024

IBM Spectrum Protectâ„¢ Client 8.1.6 Downloads and READMEs

APAR status

• Closed as program error.

Error description

• When a backup is executed on a client node that has an NFS
  mount point and the NFSTIMEOUT client option is greater than
  '0', the dsmc command can hang and these messages are observed
  in the dsmerror.log file-
  
  ANS0361I DIAG: virtstat.cpp        (1542): tryOnTap: failed!
  Descriptor 1041 is not ready for RECEIVING of a tap.
  ANS0361I DIAG: virtstat.cpp        ( 788): dsmNFSsyscalls:
  tryOnTap() failed, rc(-1), errno(25)
  ANS0361I DIAG: linux/pserrno.cpp   ( 304): TransErrno:
  Unexpected error from GetFSInfo:statfs, errno = 25
  
  
  If this is a scheduled backup, the following message will be
  logged in the schedlog, with no further messages-
  
        Executing scheduled command now.
  
  
  Another condition of the hang is that the data descriptor in the
  message above is greater than 1024.
  
  
  IBM Spectrum Protect Versions Affected:
  
   7.1 and 8.1 or higher on Linux and Unix
  
  Initial Impact: High
  
  Additional Keywords: TSM Storage Manager
  

Local fix

• Set NFSTIMEOUT to '0'
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * IBM Spectrum Protect Backup-Archive Client versions 7.1 and  *
  * 8.1 running on Unix and Linux platforms                      *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * see ERROR DESCRIPTION                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fixing level wen available. This problem is projected  *
  * to be fixed in level 7.1.8.3 for Linux x86 and in level      *
  * 8.1.6 for all supported Unix and Linux platfroms. Note that  *
  * this is subject to change at the discretion of IBM.          *
  ****************************************************************
  *
  

Problem conclusion

• The code has been changed and the IBM Spectrum Protect for
  Backup-Archove Client will not hang if NFSTIMEOUT more than 0.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Modules/Macros

• dsmc
  

Fix information

• Fixed component name

  TSM CLIENT

• Fixed component ID

  5698ISMCL

Applicable component levels

• R71A PSY

     UP

• R71L PSY

     UP

• R71H PSY

     UP

• R71S PSY

     UP

• R81A PSY

     UP

• R81L PSY

     UP

• R81H PSY

     UP

• R81S PSY

     UP