Stopping clients: oleg350-client.virtnet /mnt/lustre2 (opts:)
Stopping client oleg350-client.virtnet /mnt/lustre2 opts:
COMMAND   PID USER   FD   TYPE      DEVICE SIZE/OFF               NODE NAME
dd      15448 root    1u   REG 1273,181606        0 162129603815549183 /mnt/lustre2/racer1/19/17 (deleted)
/mnt/lustre2 is still busy, wait one second