How can I create a Kanban sub filter that shows all issues linked to epics with a particular label

[Kirsten Lawarik]

I'm using the new Jira Cloud software.

I have a project with 5 Kanban boards; 1 main board and 4 sub boards. The intention here is to be able to see work relating to a particular element of the project separately and, as the team grows and elements of work are designated to particular teams, enable those team to work un-distracted from the noise of the full project. 

All issues will have an Epic associated with them. Each epic has a label that associated with an element of the project (which correspond with the 4 additional boards). 

As each project element has several epics, I'd rather filter by the issues that are linked with epics with a specific tag, rather than filtering by the epics themselves. This will save administration moving forward as more epics are added, as when a label is added the existing filters should pick it up. 

I did see this, but have had trouble implementing it in the Cloud (I'm not sure that Issuefunction or linkedissueof exist? I've had trouble in any case). https://community.atlassian.com/t5/Jira-Core-questions/How-to-filter-for-all-epics-with-a-certain-label-and-all-issues/qaq-p/155121

It would be great if someone could provide me with a JQL filter for Jira Cloud that will enable me to return all issues linked to epics that contain a certain label.

(To clarify, I don't want to label every issue. I want the filter to understand the issue is associated with an epic that has a specific label. The filter would return all linked issues of all epics with 'x' label). 

[Nikhil]

We can get the list  linked issues that are in different status using the plugin"JQL Search Extensions"

JQl:- issue in allIssuesInEpic("labels = X") gives you the list of all the issues and subtasks of epic which has a label "X"

Documentation can be found here. 

[Olga Videc]

Hello @Kirsten Lawarik 

Try this 

"Epic Link" != null and labels = desired label 

Also, the issue I found when I was implementing similar this for my reports are sub-tasks 

Sub-tasks cant have an epic link so you need a way to find sub-task of issues that are associated with some epic, found a solution for this but requires ScriptRunner.

"Epic Link" != null and labels = desired label or (issueFunction in subtasksOf("\"Epic Link\"!=null") and labels = desired label)

BR, Olga