It seems the pages size of rockne-02 is ubuntu@rockne-02:~/go/src/launchpad.net/juju-core$ getconf PAGESIZE 65536
but winton-02 has: ubuntu@winton-02:~$ getconf PAGESIZE 4096 this may be it... no idea why mongo does the alignment check anyway, seems like crack -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to mongodb in Ubuntu. https://bugs.launchpad.net/bugs/1294747 Title: mongodb fails assertion on ppc64el with 64k pagesize To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mongodb/+bug/1294747/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs