OK.
The logs of the problem are shown in the attachment. In addition, I think I should explain some of the details of the problem.
1.The time of the Client is 8 hours before the Lustre Servers.
2.The error info only print during the the Lustre Server2 take the task of the Lustre Server1. Other times, writing and reading datas from the Lustre FS is normal.
3.During my test, the problem appeared 7 times, the time of the Lustre Server as follows:
(1)9-17: 19:47
(2)9-17: 20:45
(3)9-17: 22:45
(4)9-18: 01:45
(5)9-18: 03:45
(6)9-18: 05:45
(7)9-18: 07:45
Close old bug