tree ca026ae36366c29e8a60ed30e429cc8a175a92c5
parent d8d595caaf77b6c699181bc04770c294c7b2fa82
author Don Garrett <dgarrett@google.com> 1395857671 -0700
committer Don Garrett <dgarrett@chromium.org> 1395865506 +0000

Return a non-zero exit code if cleanup fails.

This is an attempt to work around crbug.com/353558, which is believed to
be caused by non-atomic umount, which is believed to be a kernel bug.

If any command returns an error during the cleanup, make the
script return a non-zero exit code. This triggers additional logging in
most call sites for the script.

Also, dump mount related debug info after every umount or rmdir failure to
help try and diagnose this.

BUG=chromium:353558
TEST=Local payload generation.

Change-Id: I014bd372f5c55e64383572df27b3cbba9b944337
Reviewed-on: https://chromium-review.googlesource.com/191702
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Commit-Queue: Don Garrett <dgarrett@chromium.org>
Tested-by: Don Garrett <dgarrett@chromium.org>