IT45963: ANR3525W OR ANR0670W MEDIA INACCESSIBLE MESSAGE IF A DISMOUNT TAKES TOO LONG AND SAME DRIVE IS NEEDED TO MOUNT ANOTHER TAPE

8.1.23.000-IBM-SPSRV-WindowsX64
8.1.23.000-IBM-SPSRV-Linuxx86_64
8.1.23.000-IBM-SPSRV-Linuxs390x
8.1.23.000-IBM-SPSRV-Linuxppc64le
8.1.23.000-IBM-SPSRV-AIX

APAR status

• Closed as program error.

Error description

• A GENERATE BACKUPSET or EXPORT NODE, or any other tape process
  may fail with one of the following types of warning message:
  
   ANR3525W GENERATE BACKUPSET: Transaction failed - storage media
  inaccessible.
  or  ANR0670W EXPORT NODE: Transaction failed - storage media
  inaccessible.
  
  That happens if a tape drive needs too much time dismounting a
  tape volume, while that same tape drive is needed to mount
  another tape volume.
  Internally there are some mount retries done, but after a while
  the mount retries stop and the process fails with one of the
  above message types.
  
  A server trace with flags PVR MMS AS shows the following series
  of events:
  
  A PVR I/O agent is created internally to open a volume, here it
  is agent id 446:
  
  [463][pvr.c][2074][pvrOpen]:Created PVR I/O agent (446) for
  volume VOLXXXX
  [446][pvr.c][13928][AgentThread]:PVR I/O agent (446) waiting for
  next request.
  [446][pvr.c][13972][AgentThread]:PVR I/O agent (446) processing
  OPEN request.
    ...
  
  Later that agent finishes with rc=2825:
  
  
  
  [446][pvr.c][14408][AgentThread]:PVR I/O agent (446) finished
  OPEN request; rc=2825.
  [446][pvr.c][13928][AgentThread]:PVR I/O agent (446) waiting for
  next request.
  [446][pvr.c][13944][AgentThread]:PVR I/O agent (446)
  terminating.
  
  And the trace shows a retry to open the same volume VOLXXX
  again:
  
  
  [463][asvolmnt.c][3790][AsRetryMP]:Mount point retry 1 due to
  drive busy.
  
  The same agent 446 is created again to mount the same volume:
  
  [463][pvr.c][2074][pvrOpen]:Created PVR I/O agent (446) for
  volume VOLXXXX
  [446][pvr.c][13928][AgentThread]:PVR I/O agent (446) waiting for
  next request.
  [446][pvr.c][13972][AgentThread]:PVR I/O agent (446) processing
  OPEN request.
  
  But it fails again with same rc 2825:
  [446][pvr.c][14408][AgentThread]:PVR I/O agent (446) finished
  OPEN request; rc=2825.
  
  That mount retry appears multiple times until the internal mount
  fails after 30 seconds with the above warning message.
  Within that 30 seconds timeout period the retry happens multiple
  hundred times (seen up to 600+ times).
  
  In a library sharing environment the following additional
  message appears at the Library Manager side:
  ANR9790W Request to mount volume XXX for library client YYY
  failed.
  
  Any message showing  storage media inaccessible reason might
  be caused by this. Here is an exhaustive list:
  ANR0525W ANR0542W ANR0670W ANR1021W ANR1096E ANR1144W ANR1216E
  ANR1242E ANR2321W ANR3525W ANR4471I
  
  
  IBM Spectrum Protect Versions Affected:
  
     All IBM Spectrum Protect Server at 8.1.x on all supported
  platforms
  
  
  Additional Keywords: TS013376018 DRIVEACQUIRERETRY MPTIMEOUT
  GRC_RETRY_ACQUIREMP
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All IBM Storage Protect server users of tape library.        *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See error description.                                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fixing level when available.                           *
  * This problem is currently projected to be fixed in level     *
  * 8.1.23.                                                      *
  * Note that this is subject to change at the discretion of     *
  * IBM.                                                         *
  ****************************************************************
  

Problem conclusion

• This problem was fixed.
  Platforms fixed:  AIX, Linux, and Windows.
  

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:

Fix information

• Fixed component name

  TSM SERVER

• Fixed component ID

  5698ISMSV

Applicable component levels