I upgraded from TC 6.0.2 to TC 7.0.4. I immediately noticed my build times went up. Looking at the build log, I see messages like this,
Unable to save /usr/ci/TeamCity/buildAgent/work/c028e5573caa5356 directory state to snapshot file 38da7933.snapshot: Failed to read /usr/ci/TeamCity/buildAgent/work/c028e5573caa5356/apps/listings/vendor/bundle/ruby/1.8/gems/ffi-1.0.11/ext/ffi_c/libffi/.libs/libffi.la
which, on the next build on the same agent, cause a clean check-out since the state is not found.
One of these "failed to read" messages was for a symlink that was pointing to a non-existing directory.
These errors are occurring on agents running on cent os 5.6.
Any ideas how to avoid this problem?