IT17379: JOURNAL BACKUP FOR A WINDOWS CLUSTERED MOUNT POINT APPEARS TO BE VERY SLOW OR HUNG.

IBM Spectrum Protectâ„¢ Client 8.1.2 Downloads and READMEs
IBM Spectrum Protectâ„¢ Client 7.1.8 Downloads and READMEs

APAR status

• Closed as program error.

Error description

• A journal backup for a Windows mount point in a clustered
  environment may appears to hang.
  
  The backup output shows that the backup is processing journal
  entries like this below:
  
  Querying Journal for '\\clusname\z$\mnt\point'
  Processing 25,315 Journal entries for '\\clusname\z$\mnt\point'
  
   Then there is no more activity during hours.
   That may suggest a hang, but a "service" trace shows that the
  client is looking for each file using the UNC name of the
  cluster, that the file scan is long for each file and that it
  finally fails with the message "file not found".
  
  
  Tivoli Storage Manager Versions Affected:  V6 and V7 on Windows
    platform.
  
  Customer/L2 Diagnostics:
  
  A "service" trace shows that the client is trying to access the
  changed files using the UNC name of the cluster.
  That file scan is very long and it finally fails until another
  file scan is attempted
  
  Example:
  
  17:03:44.085 [005316] [5252] :
   ..\..\common\ba\incrdrv.cpp(3636): BaJournaled(): Backup fs
   differs from journal fs:
     fs being backed up     = '\\clusname\z$\mnt\point'
     fs from journal entry  = '\\host-node\z$\mnt\point'
     vol being backed up    = 'z$\mnt\point'
     vol from journal entry = 'z$\mnt\point'
     hl being backed up     = ''
     hl from journal entry  = '\dirname\path'
     ll being backed up     = ''
     ll from journal entry  = '\filename.pdf'
     fsIsVMP                =  Yes
     SpecUsingVolAlias      =  No
  
  17:03:44.085 [005316] [5252] :
   ..\..\common\ba\incrdrv.cpp(3702): BaJournaled():
   '\\clusname\z$\mnt\point\dirname\path\filename.pdf' will be
   processed as a mountpoint dir:
     fs = \\clusname\z$\mnt\point
     hl = \dirname\path
     ll = \filename.pdf
  
  17:03:44.085 [005316] [5252] :
   ..\..\common\ba\incrdrv.cpp(3707): BaJournaled(): Received Jnl
   Query Response.
   Journal response
   \\clusname\z$\mnt\point\dirname\path\filename.pdf
  17:03:44.085 [005316] [5252] :
   ..\..\common\ba\incrdrv.cpp(3774): BaJournaled(): Checking for
   dir exclusion for path '\\clusname\z$\mnt\point\dirname\path'.
  17:03:44.085 [005316] [5252] :
   ..\..\common\fio\fileio.cpp(1193): fioCheckDirEclude() calls
   fioFsIsCaseSensitive()
  17:03:44.085 [005316] [5252] :
   ..\..\common\ba\incrdrv.cpp(3842): baJournaled(): calling
   fioCheckFileAccess:
    object     =
  '\\clusname\z$\mnt\point\dirname\path\filename.pdf'
    obj type   = dir
    entry type = backup
  
  17:03:44.085 [005316] [5252] :
   ..\..\common\fio\ntfileio.cpp(6279):
  fioCheckFileAccess(\\clusname\z$\mnt\point\dirname\path\filename
  .pdf): Entry.
  17:03:44.085 [005316] [5252] :
   ..\..\common\fio\ntfileio.cpp(6199):
  fioCheckObjAccess(\\clusname\z$\mnt\point\dirname\path\filename.
  pdf): Entry.
  17:03:44.085 [005316] [5252] :
   ..\..\common\fio\ntfileio.cpp(10338):
   NTObjAccess(\\clusname\z$\mnt\point\dirname\path\filename.pdf):
   Entry.
  17:03:44.085 [005316] [5252] :
   ..\..\common\fio\ntfileio.cpp(10341): NTObjAccess(): entry:
   file
   '\\clusname\z$\mnt\point\dirname\path\filename.pdf', requested
   access mode FIO_ACCESS_EXIST
  17:03:44.085 [005316] [5252] :
   ..\..\common\fio\ntfileio.cpp(6152):
  fioFileExists(\\clusname\z$\mnt\point\dirname\path\filename.pdf)
   : Entry.
   ...
  1 minute later ..
  ...
                  B/A Txn Producer thread
   2================>
  17:04:48.384 [005316] [5252] :
   ..\..\common\fio\ntfileio.cpp(10370): NTObjAccess(): Object
   '\\clusname\z$\mnt\point\dirname\path\filename.pdf' doesn't
   exist.
  17:04:48.384 [005316] [5252] :
   ..\..\common\fio\ntfileio.cpp(6212): fioCheckObjAccess():
   Access to Object
   '\\clusname\z$\mnt\point\dirname\path\filename.pdf'
   failed: Object doesn't exist .
  17:04:48.384 [005316] [5252] :
   ..\..\common\fio\ntfileio.cpp(6251):
  fioCheckObjAccess(\\clusname\z$\mnt\point\dirname\path\filename.
  pdf): returning 104.
  17:04:48.384 [005316] [5252] :
   ..\..\common\ba\incrdrv.cpp(3846): baJournaled(): fioAccess()
   returned 104 .
  17:04:48.384 [005316] [5252] :
   ..\..\common\ba\incrdrv.cpp(3854): BaJournaled():
  fioCheckFileAccess('\\clusname\z$\mnt\point\dirname\path\filenam
  e.pdf'): returns File not found.
  
   And it continues with next file from the journal.
  
  Initial Impact: Medium
  
  Additional Keywords:   TSM CLUSTERNODE
  

Local fix

• If possible, use a drive letter instead of a mountpoint.  This
  problem does not exist when the volume has a drive letter
  assigned.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Backup-archive client versions 6.4, 7.1 and 8.1.0 running on *
  * all Microsoft Windows platforms                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See ERROR DESCRIPTION                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * This issue is projected to be fixed in the Backup-Archive    *
  * Client version 7.1.8 and 8.1.2 on all Microsoft Windows      *
  * platforms                                                    *
  * Note 1: This is subject to change at the discretion of IBM.  *
  ****************************************************************
  

Problem conclusion

• So as the access via the UNC cluster name is disabled by
  Microsoft and cause the 'hang',
  the UNC cluster name access has been replaces with UNC machine
  name access.
  

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

• TSMJBBD  DSMC
  

Fix information

• Fixed component name

  TSM CLIENT

• Fixed component ID

  5698ISMCL

Applicable component levels

• R71W PSY

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