IJ07176: MMLSQUOTA GETS INFINITE LOOP WHEN USER IS NONE

APAR status

• Closed as program error.

Error description

• mmlsquota can end in infinite loop when the user is not
  specified, it takes the fileset as user which does not
  exist.
  
  # /usr/lpp/mmfs/bin/mmlsquota -u --block-size auto data
  data: no such user
  mmlsquota: Command failed. Examine previous error
  messages to determin
  cause.
  
  However, when fileset is specified, the infinite loop
  kicks off:
  # /usr/lpp/mmfs/bin/mmlsquota -u --block-size auto
  data:root
  data:root: no such user
  data:root: no such user
  data:root: no such user
  data:root: no such user
  data:root: no such user
  data:root: no such user
  data:root: no such user
  
  Known Impact:
  It could cause infinite loop logs in the system log file.
  

Local fix

• Use the correct user input.
  

Problem summary

• mmlsquota command processes the long options before short
  options.If the command enters with a syntax error like below:
    /usr/lpp/mmfs/bin/mmlsquota -u --block-size auto data
  the device argument "data" becomes the user argument.
  Normally, the lookup for userid would fail.  But on some setups
  (using local LDAP name service), this could end up in an endless
  loop.
  

Problem conclusion

• For mmlsquota, process the command options in one loop.
  For the above case mmlsquota would take "--block-size"
  as -u's argument (the user argument).  Then "auto" and "data"
  become the device list.  mmlsquota would fail at the script
  leave if there is not such file system name "auto"
  
  Note: If admins enter a nonexisting "User" from the syntax
  below:
  mmlsquota [-u User | -g Group] [-v | -q] [-e] [-C ClusterName]
  [-Y][--block-size {BlockSize | auto}] [Device[:Fileset] ...]
    they would still see the endless loop.
  

Temporary fix

Comments

•      423
  

APAR Information

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

  IJ06219

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

  IJ08097

Fix information

• Fixed component name

  SPECTRUM SCALE

• Fixed component ID

  5725Q01AP

Applicable component levels

• R423 PSY U885025

     19/06/28 I 1000