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[Mike Mestnik <1027510@xxxxxxxxxxxxxxxxxx>]

** Summary changed:

- /usr/lib/jvm VS /lib/jvm
+ /usr/lib/jvm VS /lib/jvm under overlayfs.

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https://bugs.launchpad.net/bugs/1027510

Title:
  /usr/lib/jvm VS /lib/jvm under overlayfs.

Status in “openjdk-7” package in Ubuntu:
  New

Bug description:
  Attached is an strace that shows /lib/jvm as the location used to find
  libjli.so.

  java: error while loading shared libraries: libjli.so: cannot open
  shared object file: No such file or directory

  # This fixed the issue.
  arcadia:~# ln -s /usr/lib/jvm /lib

  arcadia:~# dpkg -S /lib/jvm /usr/lib/jvm
  dpkg-query: no path found matching pattern /lib/jvm.
  openjdk-7-jre-lib, openjdk-7-jre, icedtea-7-jre-cacao, icedtea-7-jre-jamvm, openjdk-7-jre-headless, icedtea-netx: /usr/lib/jvm

  /lib/jvm/java-7-openjdk-i386/jre/bin/../lib/i386/jli/libjli.so
  /lib/jvm/java-7-openjdk-i386/jre/bin/../jre/lib/i386/jli/libjli.so

  EDIT:
  After reading the first few lines of the strace, I realised the issue.  /proc/self/exe CAN NOT be used to lookup what file is being run, because not every file-system supports it properly.  For that you must at least fall back to using inode and device numbers.

  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1007089

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: openjdk-7-jre 7~u3-2.1.1~pre1-1ubuntu3
  ProcVersionSignature: Ubuntu 3.2.0-23.31-lowlatency-pae 3.2.14
  Uname: Linux 3.2.0-23-lowlatency-pae i686
  ApportVersion: 2.0.1-0ubuntu8
  Architecture: i386
  Date: Sat Jul 21 17:29:43 2012
  SourcePackage: openjdk-7
  UpgradeStatus: Upgraded to precise on 2012-01-03 (200 days ago)

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