Hello, On one of our big RAM(128GB) clients we see following message: LustreError: 26295:0:(mdc_locks.c:848:mdc_enqueue()) ldlm_cli_enqueue: -2 can some one help to understand the failure? SYSTEm: SL 6.4 lustre client/server cat /proc/fs/lustre/version lustre: 2.4.2 kernel: patchless_client build: 2.4.2-RC2--PRISTINE-2.6.32-358.23.2.el6.x86_64 Thank you beforehand. Arman.