When trying to update/upgrade ESXi 6.7.0 Update 3 (via software profile update command) you may run into the following error below. This was a host running specifically Update 3 build 15018017 trying to update to build 15160138.
[Errno 28] No space left on device
vibs = VMware_locker_tools-light_18.104.22.16873994-15160134
Please refer to the log file for more details.
The solution is to manually install VMware_locker_tools package by following these steps via SSH on the host:
cd /tmp wget http://hostupdate.vmware.com/software/VUM/PRODUCTION/main/esx/vmw/vib20/tools-light/VMware_locker_tools-light_22.214.171.12473994-15160134.vib esxcli software vib install -f -v /tmp/VMware_locker_tools-light_126.96.36.19973994-15160134.vib
Once you receive verification that the Operation finished successfully, try the profile update command again to patch ESXi.