Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
I am looking for some recommendations for a specific scenario: Secondary DRBD node IO subsystem is busy and disk operations become extremely slow. The secondary is still responding, but very slowly ( for example, if you have a raid device and one drive is being rebuilt, or if you are on amazon and their EBS volumes are degraded ). In this case, DRBD's queues ( application pending, pending ) start to build up, and at some point will block ay application from writing to the device. At this point if I set the primary to standalone ( or disconnect the secondary ) the applications will regain write access. I am interested in having this done automatically, is there a way to let DRBD know if application_pending becomes a write blocking issue to disconnect and switch to standalone ? Moti