[DRBD-user] About outdated and inconsistent state

[digimer]

On 2018-05-31 10:33 PM, 唐宇奕 wrote:
> Hello, I wonder when exactly can outdated and inconsistent state of data can happen and how often does that happen? And is there a way to use inconsistent or outdated data after all if the primary node fails?

The full answer is here;

https://docs.linbit.com/docs/users-guide-8.4/#s-disk-states

The short answer is;

Outdated means the data is consistent, but old. Using it will mean any 
data written after the disk was disconnected will be lost. This happens 
when a node is cleanly disconnected while another node is still Primary.

Inconsistent means that the data on the disk had started to sync from an 
UpToDate node, but that the resync has not finished. The data on the 
disk is likely not usable (specifically, it might be a mix of new and 
old data).

digimer