Symptom
The standby SUP crashes due to SYNC_FAILURE
%KERN-2-SYSTEM_MSG: mts_tcp_send_sync_msg(): TCP connection to standby is no longer established - kernel
%KERN-2-SYSTEM_MSG: do_xmit_mtsbuf_sync_msg_tcp(): Sync TCP send failed with error -70 - kernel
%KERN-2-SYSTEM_MSG: do_mts_standby_sync: failed to sync message, ha_stage 1, opc 1523, error -70 - kernel
%PLATFORM-2-MOD_REMOVE: Module 28 removed
VDC-1 %$ %SYSMGR-2-SYNC_FAILURE_STANDBY_RESET: Failure in syncing messages to standby for vdc 1 causing standby to reset.
Additionally, when they try to do copy run start, they get "No Space left on the device"
show system internal log sysmgr cfgctrl
standby_sync_config: trying to download file 'startup_config.tar.gz'
standby_sync_config: unable to download file 'startup_config.tar.gz': No space left on device.
standby_sync_config: entering standby_sync_config(), is_global = 0, cfgctrl_vdc = 1
