For some unknown reason, the system log file is too large to launch the pegasus

Please provide the following info (check/uncheck the boxes after creating this topic):
Software Version
DRIVE OS Linux 5.2.6
DRIVE OS Linux 5.2.6 and DriveWorks 4.0
DRIVE OS Linux 5.2.0
DRIVE OS Linux 5.2.0 and DriveWorks 3.5
NVIDIA DRIVE™ Software 10.0 (Linux)
NVIDIA DRIVE™ Software 9.0 (Linux)
other DRIVE OS version
[*] other (DRIVE OS Linux 5.1.6 and DriveWorks 2.2)

Target Operating System
[*] Linux

Hardware Platform
NVIDIA DRIVE™ AGX Xavier DevKit (E3550)
[*] NVIDIA DRIVE™ AGX Pegasus DevKit (E3550)

SDK Manager Version
[*] other (1.8)

Host Machine Version
[*] native Ubuntu 18.04

For some unknown reasons, I can’t launch the pegasus. I used the debug serial to log in the system, and found that the file in the “/var/log” is too large. I remove all files in “/var/log”, and then I can get the ubuntu desktop. But, the log files fill the system space again on the second day. It’s too weird. Would someone give me some advices?

Dear @jeasonli,
Is it ok to reflash the target? If so, could you check that?