On Wed, Mar 22, 2017 at 05:13:31PM +1300, Gavin Lambert via Boost wrote:
On 22/03/2017 16:08, Vinnie Falco via Boost wrote:
I think this can be unit tested, and I believe that NuDB's unit test covers the case of power loss. I think we can agree that power loss on a read is uninteresting (since it can't corrupt data). The unit test models a power loss as a fatal error during a write. The test exercises all possible fatal errors using an incremental approach (I alluded to this in my previous message).
A power loss is more like a fatal error that fails to execute any subsequent clean-up code, so it might not be quite the same.
Agreed. The hardware is losing power. The peripheral devices will likely not all lose power simultaneously. The kernel is suffering a fatal crash. In my experience, when you pull the power plug on a server, the execution of the kernel simply ends without any trace of what happened. The application will suffer a fatal error without any trace of it having happened. Karen. -- Karen Shaeffer The subconscious mind is driven by your deeply Neuralscape Services held beliefs -- not your deeply held desires.