Running a simpler version of hardware_StorageQualBase to debug a device full issue, I notice test_that/autotest copies /var/log 3 times:


du -k /tmp/test_that_results_u_hAt8 | sort -n | grep -e "/var/log$"
243868  /tmp/test_that_results_u_hAt8/results-1-StorageQualBase.test/hardware_StorageQualBase/sysinfo/var/log
243876  /tmp/test_that_results_u_hAt8/results-1-StorageQualBase.test/hardware_StorageQualBase/sysinfo/reboot_current/var/log
243876  /tmp/test_that_results_u_hAt8/results-1-StorageQualBase.test/sysinfo/var/log

These logs represent 98% of all the data collected.
du -ks /tmp/test_that_results_u_hAt8
744172  /tmp/test_that_results_u_hAt8

Given it is collected during disk qual, we would save GCE space by storing only 1 version of /var/log.