IJ46534: ISSUING MMDSH INCORRECTLY MAY REMOVE A LOCAL FILE.

APAR status

• Closed as program error.

Error description

• The syntax of mmdsh is as follow:
  mmdsh -N {Node[,Node...] | NodeFile | NodeClass}
  [-l LoginName] [-i] [-s] [-r RemoteShellPath]
  [-v [-R ReportFile]] [-f FanOutValue] Command
  
  In the following example, mmdsh will remove /tmp/someFile.
  mmdsh -N "ls -lrt /tmp/someFile"
  
  In this example, the intended nodelist {Node[,Node...] |
  NodeFile | NodeClass} is missing. The command takes the next
  token, the string "ls -lrt /tmp/someFile" as a node list.  It
  calls a GPFS internal command to obtain a list of nodes in the
  cluster. The call to the internal command was not properly done.
  The internal command takes file /tmp/someFile as an output file
  which it removes before write new data to it.
  

Local fix

• Review the manpage carefully and enter the command correctly
  especially ensure the correct list of nodes before you run
  mmdsh.
  

Problem summary

• The syntax of mmdsh is as follow:
  
  mmdsh -N {Node[,Node...] | NodeFile | NodeClass}
  
  [-l LoginName] [-i] [-s] [-r RemoteShellPath]
  
  [-v [-R ReportFile]] [-f FanOutValue] Command
  
  In the following example, mmdsh will remove /tmp/someFile.
  
  mmdsh -N "ls -lrt /tmp/someFile"
  
  In this example, the intended nodelist {Node[,Node...] |
  NodeFile | NodeClass} is missing. The command takes the next
  token, the string "ls -lrt /tmp/someFile" as a node list.  It
  calls a GPFS internal command to obtain a list of nodes in the
  cluster. The call to the internal command was not properly done.
  The internal command takes file /tmp/someFile as an output file
  which it removes before write new data to it.
  

Problem conclusion

• This problem is fixed in 5.1.2.11
  To see all Spectrum Scale APARs and their respective
  Fix solutions refer to page:
  https://public.dhe.ibm.com/storage/spectrumscale/spectrum_scale_
  apars.html
  
  Benefits of the solution:
  Protect a file from deleting when issue mmdsh command
  incorrectly.
  
  Work Around:
  Review the manpage carefully and enter the command correctly
  especially ensure the correct list of nodes before you run
  mmdsh.
  
  Problem trigger:
  Running mmdsh with node list argument.
  
  Symptom:
  Unexpected Results/Behavior
  
  Platforms affected:
  ALL Operating System environments
  
  Functional Area affected:
  Admin Commands
  
  Customer Impact:
  Critical
  

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

  SPEC SCALE STD

• Fixed component ID

  5737F33AP

Applicable component levels