Stopping clients: oleg327-client.virtnet /mnt/lustre2 (opts:)
Stopping client oleg327-client.virtnet /mnt/lustre2 opts:
COMMAND   PID USER   FD   TYPE      DEVICE SIZE/OFF               NODE NAME
dd      79806 root    1u   REG 1273,181606 15597568 162129603815542275 /mnt/lustre2/racer0/10/3
/mnt/lustre2 is still busy, wait one second