Troubleshooting Tip: error: 'EXT3-fs (nvme0n1p1): error: ext3_remount: Abort forced by user'

•  A Linux-based kernel level or file system level error can stem from different reasons such as power outage, failed firmware upgrade, improper deletion of or modification of file system, running into a known issue, etc.
• One example of such an issue can be installing a new certificate or attempting to create a CSR request from FortiOS can produce errors such as: 'incorrect certificate file format CA/LOCAL/CRL/REMOTE.cert.' or 'failed to generate certificate signing request'.

• The following command will print out crashlog events:

diagnose debug crashlog read

• The result indicates a kernel-level error:

EXT3-fs (nvme0n1p1): error: ext3_remount: Abort forced by user

• If an error like this shows up on the crash log command output, it may be necessary to run kernel debug and use the NMI/reset button to investigate further.
  The following articles describe how to run kernel debug and how to identify or locate the NMI button on FortiGate:
  Troubleshooting Tip: How to deal with a kernel panic.
  Technical Tip: NMI Button for Troubleshooting Kernel Issues.
  
  
• Perform a disk scan on the device and reboot it.
  Technical Tip: File System check recommended message.

• Depending on the results of the investigation, the next step may vary:
  
  

 If applicable or requested by TAC support:

• As mentioned on the algorithm chart above, it is recommended when contacting Fortinet TAC to collect required logs and config files.