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Collecting core dump on NAS devices

Synology

Before connecting to your Synology NAS over SSH you'll have to allow SSH connections via NAS' WebUI.

  1. Connect to your NAS over SSH. You can follow this instruction if you are not familiar with SSH. For Linux and Mac just open a terminal; for Windows machine open powershell for ssh:
    ssh admin@<your_nas_ip_or_name>
    mceclip0.png
  2. Stop Resilio Sync gracefully from the NAS WebUI.
    mceclip8.png
  3. Run command
    ulimit -c unlimited
    to allow core dumps generation. Your NAS won't show any output if the command was successful.
    mceclip1.png
  4. Start Sync from the same terminal (not from WebUI)
    sudo /var/packages/resiliosync/scripts/start-stop-status start
    If terminal prompts you for a password - enter your admin account password
    mceclip2.png
  5. Wait till Sync crashes again or make the actions that usually force Sync to crash.
  6. Once done, locate the dump.
    It usually stays here /volume1/@rslsync.core.gz
    mceclip4.png
  7. Move the dump to your NAS public folder where you can download it via NAS WebUI 
    sudo mv /volume1/\@rslsync.core.gz /volume1/<your_shared_folder_name>
    mceclip5.png
  8. Download the dump file via WebUI and send to us.
    mceclip7.png

QNAP

Before connecting to your QNAP NAS over SSH you'll have to allow SSH connections via NAS' WebUI.
  1. Connect to your NAS over SSH. You can follow this instruction if you are not familiar with SSH. For Linux and Mac just open a terminal; for Windows machine open powershell or putty for ssh:
    ssh admin@<your_nas_ip_or_name>
    mceclip9.png
  2. Stop Resilio Sync gracefully from the NAS WebUI.
    mceclip10.png
  3. Run command
    ulimit -c unlimited
    to allow core dumps generation. Your NAS won't show any output if the command was successful.
    mceclip11.png
  4. Start the agent from the same terminal (not from WebUI)
    /share/HDA_DATA/.qpkg/ResilioSync/resilio-sync.sh start
    mceclip12.png
    If terminal prompts you for a password - enter your admin account password. Note, that "HDA_DATA" folder may differ depending your NAS model. It can be MD0_DATA, or HDB_DATA, but will always end with DATA and have some prefix before "_DATA"
  5. Wait till Sync crashes again or make the actions that usually force Sync to crash.
  6. Once done, locate the dump. 
    It usually stays here in the same folder where your terminal was when you started the Sync.
    mceclip13.png
  7. Move the dump to your NAS public folder where you can download it via NAS WebUI 
    sudo mv core /share/HDA_DATA/Public
    mceclip16.png
  8. Download the dump file via WebUI and send to us.

    mceclip17.png

     

 

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