OA59336: MSGBPXF274I AUTOMOUNT RC79 RSN055B005B JRISMOUNTED OMVS SEGMENT HOME

APAR status

• Closed as unreproducible in next release.

Error description

• In a shared file system sysplex with automount active, customer
  received this message repeatedly on all systems for one file
  system:
  
  BPXF274I FILE SYSTEM AAA.B.CCCCC
  FAILED TO MOUNT.
  
  RETURN CODE = 00000079, REASON CODE = 055B005B
  
  The file system was already mounted when the messages were
  issued. Unmounting the file system resolves the issue for a
  period of time before the problem reoccurs.
  
  Note that all other automount managed file systems covered by
  the policy used for the AAA.B.CCCCC file system functioned as
  expected.
  
  ANALYSIS:
  Dumps captured for the x'055B005B' reason code show AINO
  (Automount inode) structures for the problem file system. Of
  note, there were two active AINO (upppercase eyecatchers) for
  the problem file system.  Within the AINO structure there are
  fields ainonamelen and ainoname; review of these fields for the
  problem file system found that the ainoname contained a trailing
  blank, and that the ainonamelen reflected this as well.
  
  Review of the HOME field of the OMVS segment for the userid that
  drives the automount of the AAA.B.CCCCC file system found that
  it was coded as  HOME('/u/CCCCC ') - note the trailing space.
  
  KNOWN IMPACT:
  Extraneous msgBPXF274I incorrectly reporting that the file
  system was already mounted.
  
  Customer had to unmount/mount the file system to resolve the
  issue (temprory fix, as the problem would eventually reoccur).
  
  VERIFICATION STEPS:
  Examine the OMVS segment HOME definition for the userid that
  drives the automount of the problem file system to ensure there
  are no trailing spaces. The rexx exec below was used to query
  the customer's security database for any userid with HOME of
  '/u/CCCCC '.
  
  /* rexx */
  call syscalls 'ON'
  address syscall
  say "users   home   length"
  do forever
    "getpwent pw."
    if retval=0 | retval=-1 then
     leave
  /* test for home dir with space */
    if pw.pw_dir == '/u/CCCCC '
    then
     say pw.pw_name ' ' pw.pw_dir ' ' length(pw.pw_dir)
  end
  return 0
  
  Using a SLIP dump based on the reason code x'055B005B', review
  the AINO structures found in the SYSZBPX2 dataspace that are for
  the problem file system, noting the ainoname and ainonamelen.
  
  NOTE: The planned closure code for this APAR is UR1
  

Local fix

• BYPASS/CIRCUMVENTION:
  Ensure that the HOME section of the OMVS segment for all userids
  does not have a trailing space.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users of z/OS UNIX System Services for                   *
  * HBB77A0 HBB77B0 and HBB77C0 using automount                  *
  * facility.                                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * RC79(EINVAL) RSN055B005B(JrIsMounted)                        *
  * may occur when attempting to access                          *
  * the automount managed directory.                             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An attempt to access the automount managed directory causes the
  automount facility to mount a filesystem. The filesystem name
  is resolved by the automount policy Map file. If the resolved
  name contains blanks at the end, those blanks will be ignored
  by the mount processing. This may result in mount failure with
  RC79(EINVAL) RSN055B005B(JrIsMounted).
  

Problem conclusion

Temporary fix

Comments

• This APAR is being closed UR1 with the awareness
  of the submitting customer . This means that
  a fix to this APAR is expected to be delivered
  from IBM in a release (if any) to be available
  within the next 36 months.
  

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

  OPENMVS SYS SRV

• Fixed component ID

  5695SCPX1

Applicable component levels