jenkinsci/jenkins — comment on commit e38e687d5b66238f406d1e3642a3d5f6a02aaeb2
File: core/src/main/java/hudson/node_monitors/AbstractDiskSpaceMonitor.java line 49
By abayer:

Hmm, if temporaryOfflineCause in Node had an accessor, we could get that (via Computer) and check to see if the OfflineCause was DiskSpace, though we'd also need to add the specific category of DiskSpace monitor...I'll get something up tomorrow.