How to preserve custom locales across glibc-* updates?

Solution Verified - Updated -

Issue

  • How to preserve custom locales across glibc-* updates?
  • Why does customized locale info disappear after updating glibc-*?
  • How to preserve custom locales after glibc-common re-install?
  • After updating glibc and dependent packages, some locale info is missing from the output of # locale -a.

    # localedef -f WINDOWS-31J -i ja_JP ja_JP.SJIS
    
    # locale -a | grep ja
    ja_JP
    ja_JP.eucjp
    ja_JP.sjis   <===  here it is.
    ja_JP.ujis
    ja_JP.utf8
    japanese
    japanese.euc
    
    # yum update glibc -y
    (..SNIP..)
    
    # locale -a | grep ja
    ja_JP
    ja_JP.eucjp
    ja_JP.ujis
    ja_JP.utf8
    japanese
    japanese.euc
    
     /*  ja_JP.sjis is missing  */
    

    Why does this happen? And should I define it again?

Environment

  • Red Hat Enterprise Linux
    • 5.x
    • 6.x
    • 7.x
  • glibc
  • glibc-common

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