Applies to Models: WRN-816S/WRN-1632/WRN-1632S

Issue Summary

This article explains steps to prevent the occurrence of WRN failure to boot to OS and freezing at the BIOS splash screen, or freezing on a black screen with no prompt.

WAVE reports that the OS drive is running out of drive space even though the drive is reserved and not used for recording or motion/object metadata storage. In some cases, this is caused by the Linux Ubuntu system log growing to a file size that uses all available free space on the 32GB eMMC(SSD) OS drive – resulting in performance/boot issues.

Resolution

Prepare Removable Media

To prepare the removable media:

1. Download fix_wrn_failboot_log_cs_250314.sh (attached at the bottom of this article).
   
   
2. Run the fix_wrn_failboot_log_cs_250314.sh script to delete the current Linux system log.
   
   
3. Set a maximum syslog file size to ensure the issue does not manifest.
   
   

   NOTE: In the script, the log size is set to 100MB and the journal maximum size is set 
   to 1GB max + rotation.

4. Copy the attached script to a removable media device (named MAINTENANCE in this example).
   
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5. Extract files from the .zip file so that the file fix_wrn_failboot_log_cs_25031.sh is in the root directory.
   
   
   
   
6. Connect the removable media via a USB port on the WRN.
   
   
   
   

Connect to the WRN via Cockpit

To connect to the WRN via cockpit:

1. From the WAVE Client workstation, or another PC with network access to the WRN, open the Chrome web browser.
   
   
2. Connect to the WRN using the following syntax: https://<IP ADDRESS>:9090.
   
   
3. Enter the server credentials:
   
   Default username: wave
   Password: set at initial server setup
   
   
   
   

Locate the Flash Drive Mount

To locate the flash drive mount:

1. Click Storage.
   
   
   
   
2. Locate the USB drive that was inserted in the Drives widget at the top righthand side of the storage dashboard.
   
   
3. Click on the drive name.
   
   
4. Click Mount and take note of the existing mounting point.
   
   
   
   
5. Click Cancel.

Launch a Terminal Session via Cockpit

To launch a terminal session via cockpit:

1. Open a terminal session by clicking terminal at the bottom of the left hand menu bar.
   
   
2. Change directory to the mounted location of the USB Drive in Locate the Flash Mount Drive using the cd command cd /media/wave/MAINTENANCE.
   
   
3. Run the fix script using the sudo /bin/bash command: sudo /bin/bash fix_wrn_failboot_log_cs_250314.sh
   
   
4. If prompted, enter the server password for the WAVE account (the same used to log into cockpit).
   
   If executed properly – success to remove wrn bug appears, and system maintenance is complete.