I'm experiencing some problems accessing some of the services on llvm.org:
$ svn co https://llvm.org/svn/llvm-project/llvm/trunk
svn: E200029: Couldn't perform atomic initialization
"undef error - DBD::mysql::st execute failed: Got error 28 from storage engine"
On Linux, errno 28 corresponds with ENOSPC, so my suspicion is that
the server running both SVN and Bugzilla ran out of disk space.