IJ36899: AFMCOS: LS FILESET ROOT GOT "INVALID ARGUMENT"

APAR status

• Closed as program error.

Error description

• Error Description:
  When there are two users with uid 0 in /etc/passwd,
  ls the AFM COS fileset root fails with an error
  "Invalid argument".
  
  # ll /gpfs01/afm02
  Sat Dec 11 23:02:10 CST 2021
  ls: reading directory '/gpfs01/afm02': Invalid argument
  total 0
  
  # awk -F : '{if ($3==0) print $0; }' /etc/passwd
  root:x:0:0:root:/root:/bin/bash
  test:x:0:0::/home/test:/bin/bash
  
  Reported in:
  Spectrum Scale 5.1.2.1 on RHEL7
  
  Known Impact:
  Unable to ls the directory.
  
  Verification steps:
  
  Recovery action:
  Change the non-root user's uid to a non-zero id.
  

Local fix

• NA
  

Problem summary

• If the /etc/passwd file has multiple entries for
  the same UID, readdir fails while downloading
  the objects due to incorrect parsing of the UID.
  

Problem conclusion

• This problem is fixed in 5.1.2 PTF 4
  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:
  Fixed the code to use first entry from the passwd
  file if the UID has multiple entries.
  
  Work around:
  Remove duplicate entries from /etc/passwd
  
  Problem trigger:
  AFM+COS caching with duplicate entries in the passwd file
  
  Symptom: Unexpected results
  
  Platforms affected: All Linux OS environments
  
  Functional Area affected:  AFM
  
  Customer Impact: High Importance
  

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 DME

• Fixed component ID

  5737F34AP

Applicable component levels