(modify and resend) Trigger sync right after writing.
This can trigger the sync mechanism earlier so that the kernel has enough
time to schedule a real disk sync before system reboots.
We sent this in CL 41269, however it is reverted because the sync() and
syncfs() make test cases timeout (tons of disk access). So we only sync
file itself in this CL and leave the whoe system sync outside cgpt.
BUG=chromium-os:35992
TEST=make && make runtests ; and trybot
BRANCH=none
Change-Id: I9c6b602220131f1f011e7865788a122d4c379e73
Reviewed-on: https://gerrit.chromium.org/gerrit/41345
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Yung-Chieh Lo <yjlou@chromium.org>
Tested-by: Yung-Chieh Lo <yjlou@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
diff --git a/cgpt/cgpt_common.c b/cgpt/cgpt_common.c
index 193f2e1..8def05e 100644
--- a/cgpt/cgpt_common.c
+++ b/cgpt/cgpt_common.c
@@ -269,6 +269,11 @@
}
}
+ // Sync early! Only sync file descriptor here, and leave the whole system sync
+ // outside cgpt because whole system sync would trigger tons of disk accesses
+ // and timeout tests.
+ fsync(drive->fd);
+
close(drive->fd);
if (drive->gpt.primary_header)