ceph/ceph — pull request #2992 by dachary (2014-11-24 11:42:11+00:00)
Title: autogen.sh: git submodule sync

It is not enough to git submodule update on a existing git clone: if the
URL of the repository has been changed, the

git submodule sync

command must be called to synchronizes submodules' remote URL
configuration setting to the value specified in .gitmodules.

http://tracker.ceph.com/issues/10173 Fixes: #10173

Signed-off-by: Loic Dachary