Blockserver Trouble Shooting

Wiki > Trouble-shooting > Blockserver trouble shooting

Issue with the Config repository

Blockserver log shows the following error:

MAJOR: Error creating synoptic PV: Lock at 'C:\\Instrument\\Settings\\config\\NDW1298\\.git\\index.lock' could not be obtained

and the blockserver fails to do things like load configurations. Re-starting the instrument doesn't make the problem go away. We don't know what causes the blockserver to go in this status, but maybe it happens when an un-handled exception occurs while the blockserver is working on the repository (or maybe in parallel).

In at least one case, this issue seemed to be fixed by simply deleting the .lock file indicated in the error message. If the issue persists, do a git status in your local config repository, and if it looks messed up, just delete it and clone it from scratch following the instructions about setting up a configurations directory in the Getting Started page.

'null' configuration

If the instrument appears to start but the GUI shows 'unknown', check what the current configuration is (in the bottom right of the GUI). If it shows Current configuration: rather than Current configuration: unknown, you need to go into the configurations menu and choose a configuration (or create one).

This can happen if the configurations are edited on the filesystem - the blockserver then looks for the last configuration, can't find it, so goes into this state.