So yesterday I restarted my Synology and completely forgot to shut down the lab gracefully. On restarting the VMs, both psc’s and vCSA started throwing up with errors “VCSA 6.5 ‘Failed to start File System Check'” – I did a few googling as I’m not a Linux expert and couldn’t find any solutions on the web. Thankfully I asked a few Linux sys admins and below proposed solution worked for me:
VCSA PSC or Embedded Appliance Emergency Maintenance mode
Enter root password and re-enter when promoted again. Enable shell and run command below
Answer yes to all and reboot
The PSC /VCSA should be back to normal after gracefully reboot.