tree 50f10df839e3da91e72ec2e48102037631c7053d
parent 59c744bd3d39d9283e606166b1753c388f1cd0ea
author Akilesh Kailash <akailash@google.com> 1627518472 +0000
committer Akilesh Kailash <akailash@google.com> 1627520560 +0000

Crash during OTA merge may lead to blocks with stale data

This is a corner case wherein a crash during OTA
merge can lead to missing of some COW operations to be
merged thereby some blocks may end up with stale data.

Fix here is to avoid any re-ordering of COW operations.
Merge the COW operations as present in the COW file.

New tests have been added to cow_snapuserd.

Bug: 194955361
Test: cow_snapuserd_test, Incremental OTA
Signed-off-by: Akilesh Kailash <akailash@google.com>
Change-Id: Id895fe7a3d6b4510676490a86d0caf62dec9b079