tree 48707fef93e8484e8b33aa252a846f5425212357
parent 4aaa17f022fd0d47d2e03424bda6e86dbf7ff61b
author Robert Kolchmeyer <rkolchmeyer@google.com> 1687461172 -0700
committer Robert Kolchmeyer <rkolchmeyer@google.com> 1715218235 +0000

provisioner: explicitly sync state file on writes

Scripts sometimes reboot the preload VM with sysrq-trigger. This type of
reboot will not sync any pending writes to disk. This can result in the
state file not being up to date on the next reboot.

One consequence of this is potentially running some steps multiple
times, when they shouldn't be run multiple times. Let's avoid this by
explicitly syncing the state file on every write.

BUG=b/288441792
TEST=`bazel test`, ./run_tests

Change-Id: I5f8c641a4f142b02a9dd52e54c73cb9c4c85bb1a
Reviewed-on: https://cos-review.googlesource.com/c/cos/tools/+/71291
Reviewed-by: Sejal Sharma <sejalsharma@google.com>
Tested-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Cloud-Build: GCB Service account <228075978874@cloudbuild.gserviceaccount.com>