sonic-buildimage/files/image_config/syslog/override.conf

[Unit]
After=var-log.mount host.mount local-fs.target

[Socket]
ExecStopPre=/usr/bin/host_umount.sh journal_stop
ExecStopPost=/usr/bin/host_umount.sh delete_loop_device
Fixed S6000 abrupt reboot in 201811 (#6923) Why I did it The S6000 devices, the cold reboot is abrupt and it is likely to cause issues which will cause the device to land into EFI shell. Hence the platform reboot will happen after graceful unmount of all the filesystems as in S6100. How I did it Moved the platform_reboot to platform_reboot_override and hooked it to the systemd shutdown services as in S6100. Fixed the "/host unmount failed" issue as well in 201811. How to verify it Issue "reboot" command to verify if the reboot is happening gracefully. 2021-03-12 13:09:54 -06:00			`[Unit]`
			`After=var-log.mount host.mount local-fs.target`

			`[Socket]`
			`ExecStopPre=/usr/bin/host_umount.sh journal_stop`
			`ExecStopPost=/usr/bin/host_umount.sh delete_loop_device`