tree 1571957120517111f35a2fb4ea50a550c8353434
parent f7120a77f1882a5898d70fb5341d0332a02519e9
author J. Richard Barnette <jrbarnette@chromium.org> 1425426185 -0800
committer Richard Barnette <jrbarnette@chromium.org> 1426547346 +0000

init: Preserve .labmachine across powerwash for debug images.

In test images, certain important behaviors are enabled if a file
named .labmachine is present in the root of the stateful file
system.  The behaviors are needed to recover from various critical
events, such as loss of network, and loss of AC power.

The file doesn't automatically exist; it must be created by the
Autotest install code.  Additionally, power wash can delete the
file.  This changes clobber-state to preserve the file across
powerwash in test and dev images.  Without this change, devices may
become unrepairable after certain tests.

BUG=chromium:463177
TEST=manually powerwash with the .labmachine file present

Change-Id: I58c9ade48aadf8971cfe1a24221a39c27e5b8c84
Reviewed-on: https://chromium-review.googlesource.com/260427
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Richard Barnette <jrbarnette@chromium.org>